Roper 3511 User manual

3511, 3517, 3522, 4511, 4517, 4522
3611, 3617, 3622, 3711, 3717, 3722,
4611, 4617, 4622, 4711, 4717, 4722
HB, SB, and BH TYPE 3
OWNERS MANUAL
(Use with Supplement Owners Manual
G12-436 for GHB and BHB Pumps)
G12-209
11/29/11
SAFETY INSTRUCTIONS
This is an industrial component. Only a qualified systems integrator should be allowed to
design it into a system. The integrator must determine proper plumbing, mounting, driveline
and guard components.
Improper installation or use could lead to a serious, even fatal, accident. The system
integrator must communicate all safe operation procedures to the end user(s).
Before operation, fully understand and follow the instructions shown in this manual and any
instructions communicated by the system integrator. No one should be allowed to operate or
maintain this pump who has not been fully trained to work safely according to the
configuration of the pump system and in accordance with all applicable government and
industry regulations.
Roper Pump Company
P.O. Box 269
Commerce, GA 30529 USA
Telephone: [phone]
TeleFAX: [phone]
Email: [e-mail]
www.roperpumps.com

2
Good Practice
NOTE: These are general guidelines and do not cover all possible situations.
It is the responsibility of the system integrator to apply this product properly.
Plumbing
1. The inlet pipe should be as short and straight as possible to minimize
suction pressure losses. Excessive restrictions at the inlet can cause
cavitation resulting in poor performance, noise, vibration, or pump
damage.
2. Slope the inlet plumbing appropriately to avoid air pockets.
3. Plumbing weight, misalignment with the ports or thermal expansion can
exert excessive force on the pump. Plumbing must be properly
supported and aligned with expansion joints, if required, to minimize
these forces.
4. To prevent over pressure situations, install a relief valve as close to the
pump outlet as possible. Install the relief valve before any shut-off
valves.
Separate Pump and Drive Assemblies
Driveline Guards
1. Assure adequate guards have been installed to prevent personnel
contacting moving components.
2. Follow all OSHA, Federal, state and local codes.
Check Alignment of Pump to Driveline
Excessive misalignment can overload the pump input shaft and cause
premature failure. The figures below show parallel and angular
misalignments.
Parallel Angular
Mounting Base
1. Mount the unit on a rigid, heavy base to provide support and absorb
shock. Bases should be designed for high rigidity, not just strength.
2. The pump feet were not designed for mounting to concrete and do not
have enough contact area to prevent concrete from failing. When
mounting to cement or concrete, use a steel base plate to distribute the
mounting stress over an area large enough to prevent the cement from
failing. The base plate should be at least as thick as the pump feet.
Grout it in place.
Roper Pumps’ Close Coupled Drives
Hydraulic or Gearmotor units where the drive mounts directly to the pump
Driveline is not exposed and does not require guards.
Alignment between pump and drive line is maintained by the assembly.
Because the assembly absorbs reaction forces of the driveline, the
mounting base does not need to be as robust. The level of rigidity and
strength is determined by the piping stresses from the system.
Over-pressure may burst
pump or system components.
Always include a relief valve
in installation. Do not over
pressurize pump or block
dischar
g
e line while runnin
g
.
Injection Hazard: Do not try to
stop a leak with your hand!
Avoid any close contact with
hydraulic fluid jets. Escaping
fluid can penetrate skin, causing
serious injury. In case of
accident, see a doctor
immediatel
y
for removal of fluid.

3
Guarding PTO Drive Shafts
PTO drive systems can be dangerous and when used,
additional safety precautions, including guarding, may be required
and must be provided by the drive system installer. Roper Pump
Company has no responsibility for recommending or providing
proper guarding or other safety measures in any particular
application.
The installation of proper guards for the power take-off and its
associated equipment is the responsibility of the drive system
designer and the installer who know the particular product
application and the user’s exposure to danger. The ultimate
responsibility for the safe application and installation is the user’s.
Operating without guards could
result in serious injury or death.
Machinery in operation can grab,
crush, cut, mangle and
dismember. Do not operate
without adequate guards in place.

4
1. NAMEPLATE DATA
Roper Pump Company identifies each pump manufactured by a metal nameplate attached to the pump. This
nameplate describes the pump as built at the factory. Copy the nameplate data from your pump in the area
provided below. Use this for ready reference when ordering repair parts or when consulting with a Roper distributor
or Roper Pump Company about this pump.
MODEL NUMBER: ____________________
SPEC NUMBER: ____________________
TYPE: ____________________
SERIAL NUMBER: ____________________
PUMP NOMENCLATURE
MODEL 3722 GHBFORVLX
SPEC XXX TYPE 3
SERIAL NO. ZZZ
1. The Model Number consists of an eleven digit number.
The first digit (3) indicates the port arrangement.
3 – 3600 Series with right angle ports
4 – 4600 Series with straight through ports
The second digit (7) indicates shaft sealing.
5 – Triple Lip Seal
6 – Packing
7 – Mechanical Seal
The third and fourth digits (22) indicate the approximate theoretical displacement in U.S. gallons per 100
revolutions.
Gallons/100 Rev. [Liters/100 Rev.]
11 [41.6]
17 [64.4]
22 [83.3]
The letter or group of letters (GHB) indicates the pump head arrangement.
HB – Pump with outboard bearing
SB – Suspended pump with outboard bearing and auxiliary piping
GHB – Pump with outboard bearing and built-on gear reduction unit
BHB – Pump with outboard bearing and bracket assembly to accommodate hydraulic drive
auxiliaries through a flexible coupling
BH – Pump without outboard bearing to accommodate close coupled hydraulic drive auxiliaries
through a rigid coupling
The letter (F or A) indicates port style
No letter – Pump with threaded ports
F – Pump with Roper standard flange ports
A – Pump with flange facings to accept ANSI flanges
On GHB pumps, the letter (O) indicates pump with outboard bearing and auxiliary mounting provisions.
(Does not include built-on gear reduction unit).
On SB pumps, the letter (O) indicates pump without auxiliary piping.
The letters (RV) indicate type of faceplate on pump.
See Section 5, DIRECTION OF ROTATION AND RELIEF VALVES, for an explanation of the
types of valves available.
No letters – Plain faceplate
RV – RV style single direction relief valve faceplate (Standard RV, Jacketed RV, or Double Setting
RV)
BV – BV style bi-directional relief valve faceplate

5
The letter or group of letters (X, LX) indicates direction of rotation and shaft position. The
letter (L) indicates low drive unit. If the letter (L) is not used, the shaft will be in a high drive position.
No letter or W – Clockwise Rotation (Standard Rotation)
X – Counterclockwise Rotation
Y – Clockwise Rotation
Z – Counterclockwise Rotation
LW – Clockwise Rotation
LX – Counterclockwise Rotation
LY – Clockwise Rotation
LZ – Counterclockwise Rotation
Example:
3 7 22 * GHB F O RV LX SPEC XXX TYPE 3 S/N ZZZ
Direction of Rotation and Shaft Position
Type of Faceplate
Auxiliary Mounting Provisions
Port Style
Pump Head Arrangement
Motor Mounted Unit *
Theoretical Displacement
Shaft Sealing
Port Arrangement
* The letter (M) may be used in this space indicating the pump is mounted with motor.
The letter (E) may be used in this space indicating the pump is mounted on a base with or without
engine.
As stated in the explanation of the pump nomenclature, all characters may not appear on every pump
nameplate.
NOTE: The preceding description of the figure number is to assist in identifying your Roper 3600 series
pump only. DO NOT attempt to derive any ratings or performance from the figure number. DO NOT use
the explanation of the figure number to construct your own pump. Not all combinations are possible. For
assistance in pump selection, it is recommended that you consult Roper Pump Company or an authorized
distributor.
2. Occasionally, special pumps or configurations are required which are unique for a particular application.
These modifications are clarified by a SPECification number. Identification of any items different than a
standard pump can be made by consulting Roper Pump Company or an authorized distributor.
3. The TYPE number is a number used by Roper Pump Company for in-house identification of construction
and hydraulics. Always include the type number in any references to the pump.
4. The SERIAL number is a unique number assigned to each pump built by Roper Pump Company.
In any communication concerning this pump, always be sure to include the Model, Spec, Type, and Serial
numbers so proper identification of the pump can be assured.

6
2. MAXIMUM PUMP RATINGS
The maximum pressure, speed, and temperature limits for this pump SERIES are shown below.
The maximum rating of a pump with a SPEC number may be different depending on the materials of construction.
Maximum limits for this SERIES:
Pressure
125 psi [862 kPa] Maximum Inlet
125 psi [862 kPa] Maximum Discharge
Speed
750 rpm Maximum
Temperature
Mechanical Seal Pumps: 212 F [100 C]
Packed Box Pumps: 250 F [121 C]
3. PREOPERATION CHECKS
Read and understand the instructions and recommendations contained in this manual.
Disconnect the coupling between the driver and pump.
Test the rotation of the driver to make sure it will operate the pump in the desired direction of rotation. Rotation is
shown on the pump faceplate if the pump has an integral relief valve. When an integral relief valve is used, make
sure it is positioned and adjusted as discussed in Section 5, DIRECTION OF ROTATION AND RELIEF VALVES.
After the unit is mounted and the piping is connected, the pump should be checked to be sure it operates freely
without binding. After operation is proved satisfactory, both pump and driver should be tightly secured and the
alignment rechecked before operation.
Before starting, make sure all guards are in place and the inlet and discharge valves are opened.
After starting the unit, check to see that the pump is delivering liquid. If not, stop the driver immediately and correct
the problem. After the pump is delivering liquid, check the unit for excessive vibration, localized heating, and
excessive shaft seal leakage. Check the pressure or vacuum by installing gauges at both the inlet and discharge
sides of the pump to make sure the pressure or vacuum conforms to specifications.

7
4. RECOMMENDED TOOL LIST
NOTE: Tools not furnished with pump.
Tools for all Pumps:
(1) Safety Glasses
(1) 9/16” Combination Wrench
(1) ¾” Combination Wrench
(1) 6” Adjustable Wrench
(1) CG-45 Snap-On Tool Bearing Puller
(1) 6” to 10” Three Square File
(1) Pliers
Additional Tools for HB Pumps:
(1) 1/8” Hex Key
(1) Flat tip Screwdriver, ¼” wide X 4” long blade
Additional Tools for Pumps with an RV Type Relief Valve:
(1) 7/16” Combination Wrench
(1) 18” Pipe Wrench
Additional Tools for Pumps with Flanges:
(2) 15/16” Combination Wrench
Additional Tools for Pumps with Shaft Packing:
Packing Hook for .34” square packing rings
Additional Tools for Pumps with Mechanical Seals:
(1) 0400 External Retaining Ring Pliers
Additional Tools for BH Pumps:
(1) 5/16” Hex Key
Snap-On is a registered trademark of Snap-On Tool Corporation

8
5. DIRECTION OF ROTATION AND RELIEF VALVES
There are four types of integral relief valves available. The standard RV, jacketed RV, and double setting RV are
all designated by the letters “RV” in the pump nomenclature. The bi-directional relief valve is designated by the
letters “BV” in the pump nomenclature. Spec numbers are used to help identify some non-standard relief valves.
STANDARD RV
This relief valve is externally adjustable by means of an adjusting screw located in the center of the relief valve
cap. The range of adjustment is approximately 30 psi [207 kPa] to 125 psi [862 kPa]. The actual capability is
dependent on pump speed and liquid viscosity. The settings are for full bypass; that is, all of the fluid is circulating
back to the inlet through the relief valve. The end user must set the relief valve for conditions that exactly match the
application.
JACKETED RV
This relief valve operates in exactly the same manner as the standard RV except that the faceplate is jacketed to
allow provisions for heating or cooling of the relief valve.
DOUBLE SETTING RV
This relief valve is externally adjustable by means of an adjusting screw located in the center of the relief valve
cap. The adjusting screw is fitted with a two position lever to quickly change the relief valve setting. This is
accomplished by moving the lever from one position to the other. The relief valve is set with the lever in the high
pressure position so that the relief valve setting can be quickly reduced by approximately 10 to 30 psi [30 to 207
kPa] by moving the lever from the high pressure position to the low pressure position. Actual drop in pressure
resulting from moving the lever from the high to the low position is dependent on the application.
BI-DIRECTIONAL BV
This relief valve is externally adjustable by means of adjusting screws located in the center of the relief valve caps.
The range of adjustment is approximately 30 psi [207 kPa] to 125 psi [862 kPa]. The actual capability is dependent
on pump speed and liquid viscosity. The settings are for full bypass; that is, all of the fluid is circulating back to the
inlet through the relief valve. The end user must set the relief valves for conditions that exactly match the
application.
DIRECTION OF ROTATION TAGS
Figure 5.1
TYPICAL DIRECTION OF ROTATION TAG
FOUND ON RV STYLE
SINGLE DIRECTION RELIEF VALVES
Figure 5.2
TYPICAL DIRECTION OF ROTATION TAG
FOUND ON BV STYLE
BI-DIRECTION RELIEF VALVES

9
RECOGNIZING THE RELIEF VALVE
FACEPLATE ASSEMBLY FOR
RV STYLE SINGLE DIRECTION RELIEF VALVE
FIGURE 5.3
FACEPLATE ASSEMBLY FOR
BV STYLE BI-DIRECTION RELIEF VALVE
FIGURE 5.4

10
PROPER PUMP GEAR ROTATION
Proper gear rotation is shown on the warning tags attached to the relief valve faceplate.
PUMP INLET and PUMP DISCHARGE
On the RV and BV style relief valve, either the “pump inlet” or “pump discharge” arrow will always point directly to
one side port on the cases that have one side port and one top port. The top port is connected to the side of the
pump that is opposite the side port. The “pump inlet” and “pump discharge” arrows will always point directly to the
inlet and discharge ports on the pump with straight through port cases.
An integral relief valve should not be used on applications where the discharge must be closed for more than one
minute. Prolonged operation of the pump with the discharge closed will cause rapid heating of the liquid circulating
through the relief valve, thus resulting in possible damage.
DIRECTION OF ROTATION FOR THE RV STYLE RELIEF VALVE
The drawings showing DIRECTION OF ROTATION FOR PUMP CONFIGURATIONS USING THE RV STYLE
RELIEF VALVE and position of relief valve with the letter “L” in the designation are for low drive applications (the
drive shaft is lower than the side port). All other drawings shown in Figure 5.5 are for high drive applications (the
drive shaft is above the side port).
The arrow in the drawing at the end of the drive shaft indicates the direction of rotation needed to achieve proper
operation of the pump and relief valve when using the pump and relief valve orientation shown in the drawing. CW
indicates clockwise rotations and CCW indicates counterclockwise rotation when viewed from the drive shaft end
of the pump.
To determine the correct relief valve position for any of the pump orientations, use the drawings shown in Figure
5.5 titled DIRECTION OF ROTATION FOR PUMP CONFIGURATIONS USING THE RV STYLE RELIEF VALVE:
1. Find the group of drawings with the proper drive shaft position (high or low drive). Drawings with W, Z, X,
or Y rotation are high drive pumps. Drawings with LW, LZ, LX, or LY rotation are low drive pumps.
Eliminate all other drawings.
2. In the drawings remaining, find the group of drawings with the proper direction of rotation arrow at the end
of the drive shaft. Eliminate all other drawing. CW indicated clockwise rotation and CCW indicates
counterclockwise rotation when viewed from the drive shaft end of the pump.
3. In the drawings remaining, find the group of drawings with the proper port positions (straight through or
right angle). Eliminate all other drawings.
4. In the remaining drawings, find the drawing with the proper inlet and discharge port locations. This drawing
will show the proper relief valve position for the pump configuration chosen. Note the position of the word
“INLET” cast on the side of the relief valve faceplate. The word “INLET” must be on the inlet “side” of the
pump in order for the relief valve to work properly. The discharge and inlet “sides” of the pump are always
directly opposite each other; the top port of the right angle pump is connected to the “side” of the pump via
an internal passage.

11
DIRECTION OF ROTATION FOR 3511 TO 4722 HB, BH, AND SB PUMPS
WITH AND WITHOUT THE RV STYLE SINGLE DIRECTION RELIEF VALVE
Figure 5.5

12
DIRECTION OF ROTATION FOR 3511 TO 4722 HB, BH, AND SB PUMPS
WITH THE BV STYLE BI-DIRECTIONAL RELIEF VALVE
Figure 5.6

13
CHANGING THE RV STYLE RELIEF VALVE POSITION
Refer to the sectional drawing shown in Figure 5.7.
(Not required on a pump with the BV Style Bi-Directional Relief Valve).
You should have already checked the drawings in Figure 5.5 to find the correct way to position your relief valve,
based on the pump’s direction of shaft rotation and position and the location of the inlet and discharge ports. If you
have not checked, do it now to decide whether or not you should change the position of our relief valve.
If the relief valve position needs to be changed, follow the instructions below and refer to Section 14, PARTS LIST
and the RV STYLE SINGLE DIRECTION RELIEF VALVE drawing shown in Figure 5.7.
1. Turn off pump and lock out energy source to driver.
2. Close inlet and discharge valves.
3. To drain pump, follow procedure in Section 7, INSTRUCTIONS FOR DRAINING PUMP.
4. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing faceplate (23B) to
case. Remove faceplate.
5. While viewing faceplate (23B) from end with relief valve cap (24), turn faceplate so that orientation of relief
valve cap to pump matches DIRECTION OF ROTATION drawing previously selected from charts in Figure
5.5.
6. Install two hollow dowel pins (J) on faceplate end of case (19A, B, C, D, E) if they were removed during
disassembly. Place appropriate number of case gaskets (20) on end of case. Align faceplate (23B) on
hollow dowel pins, maintaining proper orientation as determined above. Secure faceplate to case using
two washer head cap screws (K) and eight hex head cap screws (L).
RV STYLE SINGLE DIRECTION RELIEF VALVE BV STYLE BI-DIRECTIONAL RELIEF VALVE
FIGURE 5.7 FIGURE 5.8

14
DISASSEMBLY OF RV STYLE SINGLE DIRECTION RELIEF VALVE AND BV STYLE BI-
DIRECTIONAL RELIEF VALVE
Refer to the sectional drawing shown in Figure 5.7 and Figure 5.8.
1. Turn off pump and lock out energy source to driver.
2. Close inlet and discharge valves.
3. To drain pump, follow the procedure in Section 7, INSTRUCTIONS FOR DRAINING PUMP.
4. Decrease pressure on spring (29) by loosening lock and seal nut (27) and unscrewing adjusting screw (26)
until adjusting screw turns freely.
5. After decreasing pressure on spring (29), remove the relief valve cap (24) by unscrewing it from faceplate
(23B).
6. Remove spring (29), poppet (30), spring washer (32), and spring guide (28).
7. Inspect all parts and replace worn or damaged parts as required.
ASSEMBLY OF RV STYLE SINGLE DIRECTION RELIEF VALVE AND BV STYLE BI-DIRECTIONAL
RELIEF VALVE
Refer to the sectional drawing shown in Figure 5.7 and Figure 5.8.
1. Install poppet (30) into faceplate (23B).
2. Install spring (29) into faceplate (23B) making sure spring is centered on poppet (30) and resting on spring
washer (31).
3. Place pilot of spring guide (28) into I.D. of spring (29).
4. Screw adjusting screw (26) with lock and seal nut (27) assembled into hole in relief valve cap (24).
5. Place small end of adjusting screw (26) in hole in spring guide (28) and screw relief valve cap (24) into
faceplate (23B).
6. Adjust relief valve by following steps shown in how TO ADJUST THE RV STYLE RELIEF VALVE.
TO ADJUST THE RV STYLE SINGLE DIRECTION RELIEF VALVE OR BV STYLE BI-DIRECTIONAL
RELIEF VALVE
Refer to the sectional drawing shown in Figure 5.7 and Figure 5.8.
WARNING! Take necessary precautions to prevent personal injury or physical damage that could be
caused by any loss of the product being pumped while adjusting the relief valve. DO NOT adjust the
relief valve without coupling guards in place.
The relief valve must be adjusted under conditions identical to the operating conditions (viscosity, rpm, etc.)
1. Connect a pressure gauge near pump in discharge line between pump and point where discharge line will
be closed.
2. Loosen locknut (27) on the adjusting screw (26).
3. Back adjusting screw (26) out to point where end of adjusting screw will be 1-3/4 inches [44.5 mm] from
plug cap (24). See RELIEF VALVE drawings shown in Figures 5.7 and 5.8.
4. WARNING! DO NOT start the pump until all rotating shafts and couplings are properly guarded. After all
rotating shafts and couplings are properly guarded, start the pump and close the discharge line slowly.
DO NOT exceed the pressure rating of pump or other equipment between the pump and the discharge
line valve. If this pressure is reached while closing the discharge valve, DO NOT close any further. DO
NOT run the pump with a closed discharge line for more than one minute at a time.

15
5. With discharge valve closed, turn adjusting screw clockwise in ½ turn increments until pressure gauge
shows desired pressure setting.
6. Tighten locknut (27).
7. Open discharge line and turn off pump.
DISASSEMBLY OF DOUBLE SETTING RV STYLE RELIEF VALVE
Refer to the sectional drawing shown in Figure 5.9.
1. Turn off pump and lock out energy source to driver.
2. Close inlet and discharge valves.
3. To drain pump, follow the procedure in Section 7, INSTRUCTIONS FOR DRAINING PUMP.
4. Loosen lock and seal nut (27). Decrease pressure on spring (29) by turning adjusting screw (26)
counterclockwise until it turns freely.
5. After decreasing pressure on spring (29), remove relief valve cap (24) by unscrewing it from
faceplate (23B).
6. Remove spring (29), spring guide (28), poppet (30), and spring washer (31).
7. Remove operating piston (59). Remove o-ring (AP) if required.
8. After several pump disassemblies, it is necessary to change locking seal nut (27). Remove adjusting
screw (26) from relief valve cap (24). Remove locking seal nut (27) from adjusting screw (26). Keep
threads on adjusting screw clean and free from dirt. Also remove any nicks or dents from damaged
threads to prevent damage to sealing surfaces of seal nut.
9. Usually there is no need to disassemble ball handle (AK) and its components from adjusting
screw (26) except if parts need replacement.
10. Inspect all parts and replace all worn or damaged parts as required.
ASSEMBLY OF DOUBLE SETTING RV STYLE RELIEF VALVE
Refer to the sectional drawing shown in Figure 5.9.
1. Install poppet (30) and spring washer (31) into faceplate (23B).
2. Install spring (29) into faceplate (23B) making sure that spring is centered on poppet (30) and resting on
the spring washer (31).
3. Place pilot of spring guide (28) into spring (29).
4. Turn adjusting screw (26) down into relief valve cap (24) with lever in high pressure position. Move lever
to low pressure position; this should leave operating piston (59) out past edge of relief valve cap (24).
(O-ring friction should hold operating piston temporarily). Place new relief valve cap gasket (25) on relief
valve cap (24).
5. Slide tip of operating piston (59) into spring guide (28) while holding double setting relief valve mechanism
by adjusting screw (26) and ball handle (AK).
6. Hold adjusting screw (26) and turn relief valve cap (24) to engage it into threads of faceplate (23B).
7. Tighten relief valve cap (24), but DO NOT allow adjusting screw (26) to come out of relief valve cap or
engagement of operating piston (59) in spring guide (28) will be lost.
8. Adjust relief valve by following steps shown in how TO ADJUST THE DOUBLE SETTING RV STYLE
RELIEF VALVE. Tighten lock and seal nut (27). Check operation of lever.

16
DOUBLE SETTING RV STYLE RELIEF VALVE
Figure 5.9
TO ADJUST THE DOUBLE SETTING RV STYLE RELIEF VALVE
WARNING! Take necessary precautions to prevent injury or physical damage that could be caused
by any loss of the product being pumped while adjusting the relief valve. DO NOT adjust the relief
valve without coupling guards in place.
The relief valve must be adjusted under conditions identical to the operating conditions. (Viscosity, rpm, etc.)
1. Connect a pressure gauge near pump in discharge line between pump and point where discharge line will
be closed.
2. Loosen lock and seal nut (27) on adjusting screw (26).
3. Back adjusting screw (26) out to minimum setting by turning ball handle (AL) counterclockwise to the point
where hex head cap screw (AN) in adjusting screw (26) will be 2 inches [50.8 mm] from relief valve
cap (24). (See DOUBLE SETTING RELIEF VALVE drawing shown in Figure 5.9.)
4. Move ball handle (AL) to normal pumping position as shown in Figure 5.9.
5. WARNING! DO NOT start the pump until all rotating shafts and couplings are properly guarded. After all
rotating shafts and couplings are properly guarded, start the pump and close the discharge line slowly.
DO NOT exceed the pressure rating of the pump or other equipment between the pump and discharge
line valve. If this pressure is reached while closing the discharge valve, DO NOT close any further. DO
NOT run the pump with a closed discharge line for more than one minute at a time.
6. With discharge valve closed and using ball handle (AL), turn adjusting screw (26) clockwise until pressure
gauge shows desired pressure setting.
7. Tighten lock and seal nut (27).
8. The relief valve is now set at desired high pressure setting.
9. Move ball handle (AL) to low pressure setting as shown in Figure 5.9 and note low pressure setting.
10. Open discharge line and turn off pump.
Relief valve is now set.

17
CONVERTING FROM RV STYLE RELIEF VALVE TO DOUBLE SETTING RV STYLE RELIEF VALVE
1. On standard RV style relief valve, loosen lock and seal nut (27).
2. Turn adjusting screw (26) counterclockwise to decrease pressure on spring (29).
3. Remove relief valve cap (24) and gasket (25) along with lock and seal nut (27) and adjusting screw (26).
4. Install double setting relief valve mechanism in accordance with instructions in ASSEMBLY OF DOUBLE
SETTING RV STYLE RELIEF VALVE.
JACKETED PUMPS
Jacketed faceplates and backplate are available on 3500, 4500, 3600, 3700, 4600, 4700 series pumps. They look
similar to the standard nonjacketed ones described in this manual except for the four threaded taps on the
jacketed faceplates and backplates. Two of the four taps are piped as inlet and outlet for the heating or cooling
medium. It is recommended that steam, when used, be piped into the jacket from a top tap and out through a
bottom tap. Liquid, when used, should be piped into the jacket from a bottom tap and out a top tap. In addition to
the two taps on both endplates not used for piping, two ¼” NPT taps on the jacketed backplate are provided to
facilitate clean out of scale.
The heating or cooling medium should be steam or a noncorrosive, nonclogging liquid. A steam medium is limited
to 350 F [177 C] maximum. A liquid medium is limited to 450 F [232 C] maximum. The jacketing is limited to
125 psi [862 kPa] maximum.
WARNING! Other special parts will be required to operate at temperatures up to 450 F [232 C].
The jacketed RV style relief valve faceplate, similar to non-jacketed, must have the adjusting screw offset toward
the discharge side of the pump.
JACKETED RV STYLE RELIEF VALVE FACEPLATE
Figure 5.10

18
6. HIGH DRIVE TO LOW DRIVE
Prior to operating pump, make sure that the shaft rotation, pipe connections, and the relief valve position are in
accordance with the appropriate illustrations shown in Figures 5.5 and 5.6. In order to change the rotation and/or
piping orientation, it may be necessary to remove the piping from the pump or the pump from the mounting.
[Fittings (21) and flange gaskets (22), when provided, can be removed from pump.]
Whenever changing rotation, inspect al parts before reassembly. Replace all worn parts and install new gaskets in
appropriate numbers as removed.
1. Remove coupling or universal joint and drive key (A) from drive shaft (32). Remove all burrs and sharp
edges from drive shaft and keyway.
2. A.) To reverse pump rotation and keep piping arrangement the same, drive shaft (32) position must be
changed. Follow steps 3 – 10.
B.) To reverse pump rotation and leave drive shaft (32) and case (19A, B, C, D, E) in same position;
liquid flow through pump will be reversed. Follow steps 11 – 12.
C.) To change port to opposite side on pumps with a right angle port arrangement and maintain same
pump rotation, follow steps 13 – 20.
D.) To change port to opposite side, maintain same pump rotation and drive shaft (32) in same position;
liquid flow through pump will be reversed. Follow steps 21 – 26.
REVERSE ROTATION, SAME PIPING ARRANGEMENT
3. To reverse pump rotation and keep piping arrangement the same, it is necessary to change from high
drive to low drive or low drive to high drive (3500-3700 series with right angle ports: W to LX, X to LW, Z
to LY, Y to LZ; 4500-4700 series with straight through ports: W to LZ, Z to LW) or vice versa.
4. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing backplate (6A, B)
to case (19A, B, C, D, E) and separate backplate assembly from case assembly. On 3600-4700 “H” and
“BH” pumps, drive gear (34) will pull out with backplate assembly. On “HB”, “SB”, “GHB”, and “BHB”
pumps, drive gear (34) may remain in case assembly.
5. Switch drive gear (34) and idler gear/shaft (35 and 33) positions in case (19A, B, C, D, E).
6. Position appropriate number of case gaskets (20) on case (19A, B, C, D, E) (oil or grease may be used to
hold gaskets in place).
7. Rotate backplate (6A, B) assembly 180 .
8. Slide drive shaft (32) and gear key (B) into shaft hole of drive gear (34).
9. Slide backplate (6A, B) assembly into position and secure.
10. On 3600-4700 series with gear reduction unit, mount oil cup (AB) in top hole in gear case (44) and
petcock (AC) in second hole from bottom.
REVERSE ROTATION, SAME DRIVE SHAFT AND CASE ARRANGEMENT
11. To reverse flow of liquid through pump ports, reverse rotation of drive shaft (32), maintain the original
positions of the drive shaft and case (19A, B, C, D, E) (3500-3700 series with right angle ports: W to X,
LW to LX, Z to Y, LX to LY; 4500-4700 series with straight through ports: W to Z, LW to LZ) or vice versa.
12. On pumps with relief valve, relief valve faceplate (23B or 23C) must be removed, rotated 180 , and
remounted.

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CHANGE PORT AND DRIVE SHAFT LOCATION, SAME ROTATION
13. To change the port to the opposite side and maintain same pump rotation, change drive shaft (32) from
high drive to low drive (3500-3700 series with right angle ports: W to LY, Y to LW, Z to LX, X to LZ) or vice
versa.
14. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing backplate (6A, B)
to case (19A, B, C, D, E) and separate backplate assembly from case assembly. On 3500-4700 “H” and
“BH” pumps, drive gear (34) will pull out with backplate assembly. On “HB”, “SB”, “GHB”, and “BHB”
pumps, drive gear (34) may remain in case assembly.
15. Remove the faceplate (23A, B, C, D).
16. Rotate case (19A, B, C, D, E) 180 , (front to back).
17. Switch drive gear (34) and idler gear/shaft (35 and 33) positions in case (19A, B, C, D, E).
18. If plain faceplate (23A) is used, remount to case (19A, B, C, D, E) in same position. If a relief valve
faceplate (23B, C, D) is used, rotate faceplate 180 and remount to case (19A, B, C, D, E).
19. Rotate backplate (6A, B) assembly 180 and remount on case (19A, B, C, D, E).
20. On pumps with gear reduction unit, mount oil cup (AB) in top hole of gear case (44) and petcock (AC) on
next bottom hole.
SAME ROTATION, CHANGE PORT LOCATION, SAME DRIVE SHAFT LOCATION
21. To change port to opposite side, maintain same pump rotation and drive shaft (32) in same position; the
flow of liquid through the pump will be reversed (3500-3700 series with right angle ports: W to Y, LW to
LY, Z to X, LZ to LX) or vice versa.
22. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing backplate (6A, B)
to case (19A, B, C, D, E) and separate backplate assembly from case assembly. On 3500-4600 “H” and
“BH” pumps, drive gear (34) may remain in case assembly.
23. Remove faceplate (23A, B, C, D).
24. Remove case (19A, B, C, D, E) and rotate 180 (front to back).
25. Remount and secure case (19A, B, C, D, E) to faceplate (23A, B, C,).
26. Remount backplate (6A, B) assembly to case (19A, B, C, D, E).
7. INSTRUCTIONS FOR DRAINING PUMP
Refer to Section 14, PARTS LIST.
The extent to which a pump can be drained is dependent upon the product being pumped. Low viscosity products
such as solvents will drain quickly and easily. High viscosity products such as molasses and tar will drain very
slowly. Also, the draining of high viscosity products will be less complete.
Regardless of the product pumped, the areas at the blind end of the bearing bores and the mechanical seal
chamber will not drain.
1. Read and understand all safety instructions and warnings before starting draining procedure.
2. There are two pipe plugs (S) in the faceplate (23A, B, C,). Remove one that is in lowest position.
3. Rotate drive shaft very slowly by hand. Each time that flow from drain increases, stop turning shaft until
flow stops; then resume until flow increases again. Be sure to rotate shaft several complete revolutions in
each direction until all flow from drain has stopped.
4. Reinstall and tighten pipe plug(s).

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8. INSTRUCTIONS FOR PUMP DISASSEMBLY
Refer to Section 14, PARTS LIST.
1) Read and understand all safety instructions and warnings before starting to disassemble pump. While
disassembling pump, always inspect disassembled parts and adjacent parts to see if further disassembly is
needed. Replace worn or damaged parts as required.
2) If you do not know which pump arrangement you have, collect nameplate data and refer to Section 1,
NAMEPLATE DATA, to determine what you have. Consult a Roper distributor or Roper Pump Company if you
have any questions.
3) When cleaning or lubricating, use only cleaning solutions and lubricants that are compatible with products
being pumped and with sealing elastomers. DO NOT use petroleum base products with seals with EPR
elastomers. Use a non-petroleum base lubricant with EPR elastomers.
4) Turn off pump and lock out energy source to driver. DO NOT proceed further with disassembly of pump if
there is the slightest possibility that driver may be started.
5) If used, turn off and disconnect flush from mechanical seal.
6) Close inlet and discharge valves.
7) Remove guard and disconnect coupling between driver and pump.
8) Drain inlet and discharge lines. Disconnect lines from pump inlet and discharge.
9) Follow the procedure in Section 7, INSTRUCTIONS FOR DRAINING PUMP.
10) A.) For 3500/3600/3700/4500/4600/4700 “HB” and “SBFO” pumps, follow steps 11 – 20.
B.) For 3700/4700 “BH” pumps, go to Section 12, INSTRUCTIONS FOR DISASSEMBLY OF A TYPE
“MBH” HYDRAULIC DRIVE. After disassembling hydraulic drive, return to this section and follow steps 11 –
20.
11. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing faceplate (23A, B, C,
D) to case (19A, B, C, D, E). Remove faceplate (23A, B, C, D).
12. Remove two dowel pins (J) from case.
13. Remove case gaskets (20).
14. A.) On “BH” pumps, remove faceplate end retaining ring (36B) from drive shaft (32). Remove drive gear (34)
and key (B). Remove backplate end retaining ring (36A).
B.) On “HB” and “SBF” pumps, remove drive gear (34) and key (B) from drive shaft (32).
15. Remove idler gear (35) and key (B) from idler shaft (33). Remove idler shaft.
16. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing backplate (6A, B) to
case (19A, B, C, D, E) and separate parts.
17. Remove case gaskets (20) from opposite side of case (19A, B, C, D, E).
18. Remove two dowel pins (J) from opposite side of case (19A, B, C, D, E).
19. Remove drive key (A) from drive shaft (32).
20. A.) For 3500/4500 “BH” pumps, follow steps 21 – 24.
B.) For 3500/4500 “HB” pumps, follow steps 25 – 30.
C.) For 3600/4600 “BH” pumps, follow steps 31 – 34.
D.) For 3600/4600 “HB” and 3622 “SBFO” pumps, follow steps 35 – 40.
E.) For 3700/4700 “BH” pumps, follow steps 41 - 44.
F.) For 3700/4700 “HB” and “SBFO” pumps, follow steps 45 – 50.