Red Valve 75 Series User manual

IMPORTANT
Please take a moment to review this manual. Before performing any maintenance on the valve be sure the
pipeline has been depressurized. The improper installation or use of this product may result in personal injury,
product failure, or reduced product life. Red Valve Company, Inc. can accept NO liability resulting from the
improper use or installation of this product. If you have any questions or problems, please call the customer
service department at [phone]. We appreciate your comments. Thank you for choosing Red Valve.
The Red Valve Series 75 and 70 Manual Pinch Valves
are designed to provide reliability and long service
life in a variety of tough applications, including both
abrasive and corrosive processes.
The Series 75 and 70 are 100% full ported when
completely open, resulting in no pressure drop.
Closing is accomplished by two pinch bars closing
simultaneously on centerline. A smooth venturi is
maintained, and there are no cracks, crevices, or
dead spots to clog or accumulate debris. The flex-
ing action of the resilient sleeve actually breaks up
residue or dewatered surfaces.
Red Valve Pinch Valve sleeves are available in a va-
riety of elastomers and configurations to meet your
specific application.
• Simple design
• No Packing to maintain, ever
• Cost effective
• No cavities or dead spots to bind
valve operation
• Low maintenance
SERIES 75 AND SERIES 70
Installation, Operation and Maintenance Manual

INSPECTION OF VALVE
When your Red Valve order arrives, check the contents carefully to as-
sure no damage or loss occured in transit.
Check flange faces of pipe for rough/damaged areas. Pipeline flanges
must be flat, properly spaced, and parallel to achieve proper seal.
Flange faces must have a concentric or spiral phonographic finish
made with a 1/64 " deep V-groove. Smooth flange finishes, less
than 250 AARH, or those with raised faces are not acceptable.
INSTALLATION
1. Do not clean the body flange surfaces with rough abrasive wheels,
or the serrations will be removed and flange leakage may result. Do
not use Permatex or RTV silicone on the metal flange surface. The
compounds will fill in the serrations and flange leakage may result.
2. The flanges mating to the Series 70/75 should be serrated approxi-
mately 1/16" x 90°. Rubber will creep along smooth metal, PVC, or
Teflon flanges, eventually causing a leak. Flange I.D. should match
the sleeve I.D. and should be free of sharp edges which could cut
into sleeve flanges. Weld neck or socket weld flanges are recom-
mended. Slip on or screw on flanges have a larger I.D. and can cut
the rubber sleeve. If slip on or screw on flanges must be used, grind
off all sharp I.D. edges.
3. Do not use sharp tools, such as screwdrivers or crow bars, on the
rubber during installation. This can cut and damage the flange face
and cause possible leakage.
4. The valve should be completely open before installing the valve
in the pipeline or tightening the flange bolts. Use bolts of correct
length that will not extend out beyond the back of the flange. The
use of bolts that are too long can cause them to bottom out on the
valve body, causing permanent damage.
5. Stem Lubrication: Apply a liberal amount of grease with a gun at the
grease fitting located below the handwheel, or on cap in middle of
handwheel for smaller size valves.
6. For valves with stem seals and body gaskets, remove the drain plug
in the bottom of the casting before operating valve.
Never use pipe flanges with a larger I.D. than sleeve I.D.
Never overtorque the valve when closing.
Never perform maintenance on valve if line is pressurized.
Never Use flange bolts that are too long.
Do grease stem liberally.
Do tighten all flange bolts evenly.
OPERATION
Red Valve Manually Actuated Pinch Valves consist of four major
components, plus a position indicator:
Body The body or frame acts as a housing and support for the
other valve components. It is not the primary pressure containing
component.
Sleeve The sleeve is the primary pressure containing component and
the only component in contact with the process fluid.
Mechanism The pinch mechanism incorporates a floating mecha-
nism design. It may therefore feel loose when operating, since the
mechanism is not attached to the body either internally or external-
ly. The floating design reduces the risk of binding from corrosion
or long periods of inactivity.
Handwheel or Bevel Gear Handwheels and bevel gears are
sized according to the torque required to operate the valve. Bevel
gears are suggested on valve sizes larger than 6" in diameter
and over 75 psi. If the valve fails to operate with the handwheel
or bevel gear, do not attempt to use a “cheater bar” for added
mechanical advantage. In order to avoid damage to the valve due
to difficulty in opening/closing, please refer to the troubleshooting
guide in this IOM.
Position Indicator The position indicator is a rod located in the
central hub of the handwheel. When the indicator rod is flush with
the handwheel, the valve is closed. The indicator rod rises as the
valve is opened.
MAINTENANCE
Lubrication: Manual Pinch Valves should be lubricated and actu-
ated monthly. A high quality lithium grease is recommended for this
purpose. The valve should be greased with the valve in the full closed
position. The grease fitting is located on the hand-wheel cap on
smaller size valves and on the stem below the handwheel for larger
size valves. Apply grease until the unit is full, then cycle valve from
full open to full closed position.
Sleeves: A spare sleeve is a factory recommended spare part for
Manual Pinch Valves. When the valve is placed in service, a spare
sleeve should be ordered.
Caution: Resilient sleeves are subject to deterioration from ozones,
light, or chemicals. Spare replacement sleeves should be stored in
a cool dry location away from exposure to light, electric motors, or
harsh chemicals.
PARTS
1. Handwheel
2. BodyTop
3. Pinching
Mechanism
Assembly
4. Sleeve
5. BodyBottom
6. BodyGaskets
(optional)
7. Pressure
Gauge(optional)
2
3
4
1
6
5
7


1. Bevel Gear
2. Actuator Support Bracket
3. Stem and Stem Coupling
4. Handwheel or chainwheel
5. Protective Cover
6. Spur Gear (Optional)
SLEEVE REPLACEMENT
1. Make certain that there is no pressure in the pipeline.
2. Remove the valve from the pipeline.
3. Disassemble valve, first removing handwheel, then removing
the body bolts in the casting.
4. Lift off the top half of the valve body. Remove the old sleeve by
buckling the flanges and sliding the sleeve through the mecha-
nism. Buckling the flanges of the new sleeve, slide new sleeve
through the mechanism.
5. If your sleeve is equipped with positive opening tabs, align the
sleeve flange holes to the body flange holes before attaching
tabs. This will assure easy installation in line.
6. Bolt top casting back to bottom casting, and reattach hand-
wheel. Grease mechanism thoroughly and actuate valve from
full closed to full open position. The valve is now ready to install
back into the pipeline.
STORAGE
If your Manual Pinch Valve is to be stored for a period of time prior to
installation, the following storage guidelines will help preserve your
valve and assure trouble-free installation.
1. Store valve and any spare sleeves in a cool, clean, dry location.
2. Avoid exposure to light, electric motors, dirt, or chemicals. Re-
silient sleeves are subject to rapid deterioration when exposed to
ozones and certain chemicals.
3. Grease stem liberally and store valve in the full open position. Do
not stack other items on top of the valve.
4. Store Installation Operation Maintenance Manual with the valve
so it will be readily available for installation.
TROUBLESHOOTING GUIDE
VALVE IS DIFFICULT TO OPERATE
Make certain valve stem is well greased. Check stem threads for
damage or corrosion, especially following long periods of inactivity.
Make sure pressure in the line does not exceed working pressure.
VALVE WILL NOT CLOSE FULLY, OR CHECK FLOW
WHEN CLOSED
Possible obstruction in line. Open valve several turns to permit
obstruction to flush past valve.
VALVE LEAKS AT FLANGE
Check flange bolts to assure no bolts are of excess length or bottom
out on casting. Retighten all flange bolts uniformly.
POSITION INDICATOR DOES NOT RISE OR FALL
Make sure large nut on top of handwheel is tightened securely. Make
sure that sufficient amount of grease is applied through fitting.
RETURNS
All returns must have standard Red Valve Co. return goods tags.
Sleeves to be inspected by Red Valve Co.must have the tag firmly
attached to the sleeve via the bolt holes, and must list the company,
order number, address, valve serial no., your telephone number,
operating temperature, pressure, closing frequency, fluid media, and
total days in service.
NOTE: If the product being returned has been in contact with a hazard-
ous chemical or material, an MSDS (Material Data Safety Sheet) must
be provided with the return paperwork; otherwise the return will not
be processed. Any product that has been in contact with a hazardous
substance MUST be cleaned prior to being returned to Red Valve, or
the return will not be processed.
BEVEL GEAR ACTUATOR
1. DESCRIPTION
For manually operated valves using a bevel gear actuator, the bevel gear is
bolted to an actuator support bracket, or yoke. The bracket is bolted to the
top half of the valve body. The stem passes through the bracket and is
connected to a stem coupling attached to the bevel gear unit. The hand-
wheel or chainwheel is connected directly to the bevel gear input shaft.
In large line sizes or high pressure applications, a spur gear unit may be
attached to the input shaft, and the handwheel or chainwheel attached to
the spur gear.
2. INSTALLATION
The bevel gear is factory installed on the valve. If the handwheel or chain-
wheel needs to be installed, use the through bolts supplied.
3. OPERATION
The valve is closed by turning the handwheel clockwise, and opened by
turning the handwheel counterclockwise.
CAUTION: Due to the torque amplifying effect of the bevel gear, it is pos-
sible to overtorque the pinch mechanism and damage the valve.
4. MAINTENANCE
Red Valve recommends regular
lubrication of all bevel gear units
with high-quality grease on all
grease fittings. In addition, the
protective stem cover (5) should
be removed and the stem (3)
greased liberally. Be sure to
replace the stem cover securely,
or debris could get inside the
bevel gear housing and hinder
operation.
5. REMOVAL
To remove the bevel gear
unit from the valve, begin by
remov-ing the handwheel or
chainwheel by removing the
through bolt that attaches it
to the input shaft. Remove
the through bolt(s) between
the stem and stem coupling.
For valves with position
indicator rods, the position
indicator rod must be
removed first. This is done by
turning the position indicator rod counterclockwise and lifting out. Re-
move all of the bolts that connect the bevel gear to the support bracket.
Lift the bevel gear assembly off the valve.
2
46 5
1
3
PARTS

SERIES 75 FLANGE BOLTING SPECIFICATIONS
VALVE NO. OF BOLT CIRCLE THREAD A B BOLT TORQUE
SIZE BOLTS DIAMETER SIZE (ft. lbs)
1" 4 3-1/8" 1/2" - 13 NC 1/2" 3/4" 20
1-1/2" 4 3-7/8" 1/2" - 13 NC 1/2" 5/8" 25
2" 4 4-3/4" 5/8" - 11 NC 1/2" 3/4" 40
2-1/2" 4 5-1/2" 5/8" - 11 NC 1/2" 3/4" 50
3" 4 6" 5/8" - 11 NC 1/2" 3/4" 55
4" 8 7-1/2" 5/8" - 11 NC 3/8" 7/8" 40
5" 8 8-1/2" 3/4" - 10 NC 3/8" –" 50
6" 8 9-1/2" 3/4" - 10 NC 5/8" 7/8" 60
8" 8 11-3/4' 3/4" - 10 NC 1" 1" 70
10" 12 14-1/4" 7/8" - 9 NC 1/2" 1" 70
12" 12 17" 7/8" - 9 NC 5/8" 1-1/4" 75
14" 12 18-3/4" 1" - 8 NC 1" 1-3/8" 100
16" 16 21-1/4" 1" - 8 NC 1" 1-7/16" 70
18" 16 22-3/4" 1-1/8" - 7 NC 1-1/2" 1-5/8" 55
20" 20 25" 1-1/8" - 7 NC 1-1/2" 1-3/4" 50
24" 20 29-1/2" 1-1/4" - 7 NC 1-1/2" 2" 70
WARRANTIES - REMEDIES - DISCLAIMERS - LIMITATION OF LIABILITY
Unless otherwise agreed to in writing signed by Red Valve, all Products supplied
by Red Valve will be described in the specifications set forth on the face hereof.
THE WARRANTIESSET FORTHIN THIS PROVISION AREEXCLUSIVE AND IN LIEU
OF ALL OTHER WARRANTIES WHETHER STATUTORY, EXPRESS OR IMPLIED
(INCLUDING ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE AND ALL WARRANTIES ARISING FROM COURSE OF
DEALING OR USAGE OR TRADE).
Red Valve Products are guaranteed for a period of one year from date of ship-
ment, against defective workmanship and material only, when properly installed,
operated and serviced in accordance with Red Valve's recommendations.
Replacement for items of Red Valve's manufacture will be made free of charge
if proved to be defective within such year; but not claim for transportation,
labor or consequential damages shall be allowed. We shall have the option of
requiring the return of the defective product to our factory, with transportation
charges prepaid, to establish the claim and our liability shall be limited to the
repair or replacement of the defective product, F.O.B. our factory. Red Valve will
not assume costs incurred to remove or install defective products nor shall we
incur backcharges or liquidated damages as a result of warranty work. Red Valve
does not guarantee resistance to corrosion erosion, abrasion or other sources
of failure, nor does Red Valve guarantee a minimum length of service, or that
the product shall be fit for any particular service. Failure of purchaser to give
prompt written notice of any alleged defect under this guarantee forthwith upon
its discovery, or use, and possession thereof after an attempt has been made
and completed to remedy defects therein, or failure to return product or part for
replacement as herein provided, or failure to install and operate said products
and parts according to instructions furnished by Red Valve, or failure to pay
entire contract price when due, shall be a waiver by purchaser of all rights under
these representations. All orders accepted shall be deemed accepted subject to
this warranty which shall be exclusive of any other or previous warranty, and
shall be the only effective guarantee or warranty binding on Red Valve, anything
on the contrary contained in purchaser's order, or represented by any agent or
employee of Red Valve in writing or otherwise, not withstanding implied warran-
ties. RED VALVE MAKES NO WARRANTY THAT THE PRODUCTS, AUXILIARIES
AND PARTS ARE MERCHANTABLE OR FIT FOR ANY PARTICULAR PURPOSE.
RED VALVE WARRANTY
A. Standard pinch valves are built
to schedule 40 pipe I.D. and to
ANSI Class 125/150# flange and
bolt circle specifications. It is
recommended that the mating
flanges are flat and full faced.
B. It is recommended that the
mating flange be serrated to
"grip" the rubber flange. The
serrations should be cut 1/16"
deep, with a 90 angle tool point.
the pitch should be 8 (eight) cuts
per inch.
C. Mating flange ID must match
the pinch valve
sleeve ID.
D. When installing a pinch valve
to a rubber, PVC, or any "slick"
mating flange, we recommend
that you install a metal serrated
gasket between the two flanges
to assist in
the seal.
E. When bolting a pinch valve to
a PVC or synthetic mating flange,
use a split back-up retaining
ring, since the mating flange will
yield prior to generating enough
force on the flange faces for a
proper seal.
F. Torque all the flange bolts in
a star pattern, first to 50% of
tabulated values, then retorque
to 100% of tabulated values. If
greater torque is required, con-
tinue retorquing in increments of
50% of tabulated values. Use of
high quality anti-seize compound
on all bolt threads is recom-
mended.
Variables such as the surface finish on bolt threads, type of
anti-seize compound used, and surface finish of the mating
flanges all have an effect on the minium torque required to
obtain a leak-tight flange seal.
A.
B.
C.
D.
E.
F.
1/16"
90
D1 = D2
1
2
3
4
5
6
78
AB
ControlPinch
ValveBody
Rubber
Sleeve
PipelineFlange
Weldneckispreferredso
thatI.D.ofangematches
thatofrubbersleeve
Red Valve Company, Inc. 750 Holiday Dr., Suite 400, Pittsburgh, PA 15220 • 412 279-0044 • Fax [phone] •www.redvalve.com
75 70 IOM 12/19