Emerson E2 User manual

www.SpenceValve.com
Spence Type E2 Main Valve
▲ WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result property damage
and personal injury or death.
Type E2 main valve must be
installed, operated and maintained
in accordance with federal, state and
local codes, rules and regulations and
Emerson instructions.
If the valve vents gas or a leak develops
in the system, service to the unit may be
required. Failure to correct issue could
result in a hazardous condition.
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Only a
qualified person shall install or service
the Type E2 main valve.
Introduction
Scope of the Manual
This manual provides instructions for the installation,
troubleshooting, maintenance, valve setting and parts
ordering for Type E2 main valve regulator.
Product Description
The Type E2 Main Valve is pilot-operated normally
closed, single seat design featuring packless
construction, and protected main spring.
One or more pilot regulators are mounted to Type E2
main valve to t with the specications dened by the
pressure or temperature regulating system.
Figure 1. Type E2 Main Valve
Instruction Manual
VCIMD-14935
November 2021
Type E2

Specications
This section lists the specications for the Type E2 main valve. Factory specications are stamped on the
nameplate fastened on the regulator at the factory.
Temperature Rating(1)
250 °F/ 121 °C
Rated Flow Coe󰀩cient
See Table 1
Main Valve Material
Cast Iron
Approximate Weight
See Table 2
Valve Sizes
NPS 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, 4, 5, 6, 8 and
10 / DN 20, 25, 32, 40, 50, 65, 80, 100, 125, 150,
200 and 250
End Connection Styles
NPT, CL125
Pressure Rating(1)
15 psig / 1.03 bar
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
Table 1. Type E2 Main Valve Rated Flow Coecients
SEAT
FACTOR
REGULATOR SIZE, NPS / DN
3/4 / 20 1 / 25 1-1/4 / 32 1-1/2 / 40 2 / 50 2-1/2 / 65 3 / 80 4 / 100 5 / 125 6 / 150 8 / 200 10 / 250
Full 7.6 11.7 18.9 27.4 44 68 96 143 202 255 465 748
70 to 75% - - - - 8.8 13.2 19.2 30.8 47.6 67.2 100 141 178 - - - - - - - -
46% - - - - - - - - - - - - 12.3 - - - - 30.6 - - - - 64.4 - - - - 115 - - - - 336
Table 2. Type E2 Main Valve Approximate Weight
VALVE SIZE END CONNECTION STYLE
NPT FLANGE
NPS DN lbs kg lbs kg
3/4 20 18 8.16 - - - - - - - -
125 19 8.62 21
1-1/4 32 30 13.6 33
1-1/2 40 36 16.3 40
2 50 50 22.7 57
2-1/2 65 - - - - - - - - 70
380 - - - - - - - - 98
4 100 - - - - - - - - 135
5125 - - - - - - - - 185
6 150 - - - - - - - - 250
8200 - - - - - - - - 415
10 250 - - - - - - - - 690
2
Type E2

Principle of Operation
The regulator is operated by initial steam or uid
pressure. It is normally closed, being held so by initial
pressure on the disc and by an internal main spring,
see Figure 3. When the pilot is opened (see pilot
instructions), initial pressure ows through the pilot
to the 8B tee. 4A bleed port restricts the ow and
pressure builds under the diaphragm and opens the
main valve.
Delivery pressure feeds back through the control pipe
to the pilot diaphragm. As this pressure approaches a
balance with the thrust of the adjusting spring, the pilot
throttles the loading pressure. In turn, the main valve
takes a position established by the loading pressure
where just enough steam ows to maintain the set
delivery pressure.
Installation
▲ WARNING
Personal injury or system damage
may result if this regulator is installed,
without appropriate overpressure
protection, where service conditions
could exceed the limits given in
the Specications section and/or
regulator nameplate.
Additionally, physical damage to the
regulator may result in personal injury
or property damage due to escaping of
accumulated gas. To avoid such injury
and damage, install the regulator in a
safe location.
Under enclosed conditions or indoors,
escaping gas may accumulate and be an
explosion hazard. In this case, the vent
should be piped outdoors.
For regulator constructions with a
spring case vent, the vent should be
kept open to permit free ow of gas
to the atmosphere. Protect openings
against entrance of rain, snow, insects
or any other foreign material that may
plug the spring case vent or vent line.
All pressure equipment should be installed
in a non-seismic area; should not be
exposed to re; and should be protected
from thunderbolt (lightning) strikes.
Planning
• Locate the valve in a straight run of horizontal pipe.
• Allow headroom above the valve for access through
the blind flange.
• Provide clearance for stem withdrawal underneath.
• Prevent water hammer and erratic operation by
installing traps to provide proper drainage before
and after the valve and before secondary pressure
relief valve or control valve.
• Avoid damaging effects of scale and dirt in the pipe
lines by using a strainer as shown in Figure 2.
• Provide a 3-valve by-pass to facilitate inspection
without interrupting service.
• To eliminate excessive noise and erratic regulation
with steam and other compressible fluids, enlarge
the delivery pipe size to effect a reasonable
flow velocity at the reduced pressure. A tapered
transition is recommended.
• If possible, avoid a sharp turn close to the regulator
outlet and a bull-headed tee connection to the low
pressure main.
• Install initial and delivery pressure gages to
indicate performance.
• If the pressure rating of the delivery system or
connected equipment is less than the initial steam
pressure, provide a safety valve.
Main Valve
• Mount the main valve with diaphragm chamber
down and arrow on body pointing in the direction
of flow. Screwed end valves should be mounted
in unions.
Pilot
For Side Mount Construction
1. Mount the pilot on either side of the main valve by
means of 1/4 in. nipple and union provided.
2. Make this connection on the 1/4 in. pipe tap at the
inlet of the main valve as shown in Figure 2.
3
Type E2

Figure 2. Type E2 Main Valve Installation
AVOID BULL-HEADED CONNECTION TO LOW
PRESSURE STEAM MAIN WHEN REDUCTION
IN NOISE LEVEL IS IMPORTANT
PREFERRED TRANSITION
- 15° MAX TOTAL
INCLUDED ANGLE
1/4" CONTROL PIPE PITCH
AWAY FROM PILOT, AVOID
WATER POKETS
DRIP AND TRAP AHEAD
OF RISE IN PIPING,
SECONDARY PRV OR
CONTROL VALVEV
4 PIPE DIAMETER (D1)
MINIMUM
BYPASS
VALVE
ISOLATION
VALVE
ISOLATION
VALVE
SPENCE
STRAINER
SPENCE
PRESSURE
REGULATOR
LONG
RADIUS
ELBOW
DRIP
AND
TRAP
RECOMMENDED AT LEAST
10 PIPE DIAMETERS (D1)
STRAIGHT RUN, FULL SIZE
RECOMMENDED AT LEAST 20 PIPE
DIAMETERS (D1) TO FIRST TURN,
SECONDARY PRV OR CONTROL VALVE
4
Type E2

For Integral Mount Construction
1. Remove blind flange on pilot and mount on blind
flange of main valve using provided bolt.
2. Screw 4A bleed port fitting into the 1/8 in. pipe tap
at the outlet of the main valve body. Note bleed
orifice in this fitting is vital to operation of regulator.
3. Screw 8B tee into 1/8 in. pipe tap in pilot. Select
tap facing downstream.
4. Screw No. 5B elbow into 1/8 in. pipe tap on
underside of main valve diaphragm chamber.
5. Connect tubing bends as illustrated in Figure 3.
Figure 3. Mounting Pilot on Type E2 Main Valve
BLEEDPORT BEND
NO. 8B TEE
NO. 4A BLEEDPORT
NO. 5B OPEN ELBOW
RESTRICTION
BEND
ADJUSTING NUTS
ADJUSTING SPRING
SERIAL NO. PLATE
SERIAL NO. PLATE
1/4 IN.
CONTROL
PIPE
1/4 IN.
UNION
MAIN VALVE
TYPE E2
DO NOT INSULATE
BELOW THIS LINE
Control Pipe (Not required with
Type T14)
1. Use 1/4 in. pipe for this line which connect the
pilot diaphragm chamber to the desired point of
pressure control.
2. Take the control at a point of minimum turbulence.
Avoid control immediately at the valve outlet or
after a turn.
3. When the delivery pipe expands in size, select a
spot at least 4 pipe diameters beyond the point
of enlargement.
4. Pitch away from pilot to avoid erratic operation and
excessive fouling.
5. Eliminate water pockets.
6. Locate delivery pressure gage in control pipe to
show pressure actually reaching pilot diaphragm
5
Type E2

Start-up and Setting
△ CAUTION
Never open a reducing valve without
positive indication that the high side is
clear of condensate.
1. On pressure reducing valves like Type E2, use
by-pass to fill the delivery system and raise
pressure to slightly below normal required.
2. Close pilot by releasing compression on adjusting
spring. See Figure 3.
3. Open 1/4 in. control pipe valve.
4. Crack outlet stop valve.
5. Crack inlet stop valve.
6. Blow down strainer.
7. Open inlet stop valve and gradually compress
adjusting spring until the valve opens and takes
control at desired pressure.
8. Alternately choke down on the by-pass and open
outlet stop valve until the regulator is on the line.
See individual instructions for other pilots.
Valve Setting
Valve setting is gaged at K to establish correct stem
length and diaphragm position. Dimension K is
supplied with each replacement stem. See Table 5 for
K values.
1. To install new stem (key 13), fasten disc (key 8)
firmly on stem with stem nut.
2. Insert stem and disc assembly in valve and screw
on pressure plate (key 16). Omit spring (key 14)
for this operation.
3. Hold disc on seat and adjust position of pressure
plate until valve setting K is reached.
4. Push pressure plate against stops in base
(key 18).
5. Remove disc, drop out pressure plate and stem,
drill and insert dowel pin (key 15) to lock the joint.
6. Grind off stem projection flush with face of
pressure plate.
Troubleshooting
Failure to Open
If the main valve failed to open check the following
possible causes to properly correct the problem.
• Adjusting spring on pilot may have been
tampered with.
• Initial pressure may be down due to partially closed
supply valve, clogged strainer or other obstruction.
• No. 4A bleed port fitting may have been omitted
and an open coupling substituted.
• Control pipe may be plugged. Most likely points
of obstruction are at shutoff valve and entrance to
delivery main.
• Main diaphragm may be broken. Test with air or
water before dismantling.
Failure to Close
If the main valve failed to close check the following
possible causes to properly correct the problem.
• Adjusting spring on pilot may have been
tampered with.
• Orifice in bleed port No. 4A may be plugged.
• By-pass valve may be leaking.
• On pressure regulators like Type E2, the main valve
or pilot may be held open by foreign matter in seat.
To determine which valve leaks, follow these steps.
Close stop valve and 1/4 in. control pipe valve.
1. Remove bleed port bend so pilot will exhaust
to atmosphere.
2. Crack inlet stop valve. Steam will issue from
8B tee.
3. Release compression on adjusting spring to
see if pilot closes tight.
4. Open and close several times to wash seat.
Steam blowing back from bleed port means
main valve disc is held open by foreign matter.
Steam may wash the obstruction from the seat
if the valve is made to open wide. This can be
accomplished, even at light loads, if the control
point is beyond the outlet stop valve.
5. Reassemble bleed port bend and place
regulator in operation.
6. Slowly open and close outlet stop valve.
6
Type E2

Seat Ring Maintenance
Note
These joints should be made up with
high temperature gasket compound.
1. Remove old compound from body and seat ring
with a wire brush.
2. Apply new compound sparingly to both parts,
threads and shoulders. Let stand until tacky
before assembling.
Parts Ordering
When corresponding with your local Sales Office about
Type E2 Main Valve, always reference the assembly
number. When ordering replacement parts, specify
the complete character part number from the following
parts list.
Parts List
Key Description Part Number
Repair Parts Kit
NPS 3/4 / DN 20 WAL08-07940-00
NPS 1 / DN 25 WAL08-07941-00
NPS 1-1/4 / DN 32 WAL08-07942-00
NPS 1-1/2 / DN 40 WAL08-07943-00
NPS 2 / DN 50 WAL08-07944-01
NPS 2-1/2 / DN 65 WAL08-07945-01
NPS 3 / DN 80 WAL08-07946-01
NPS 4 / DN 100 WAL08-09587-01
NPS 5 / DN 125 WAL08-10980-00
NPS 6 / DN 150 WAL08-10995-00
NPS 8 / DN 200 - - - - - - - - - - -
NPS 10 / DN 250 - - - - - - - - - - -
Type E2
NPS 3/4 to 3 / DN 20 to 80 See Table 3
NPS 4 to 10 / DN 100 to 250 See Table 4
Maintenance
▲ WARNING
To avoid personal injury or property
damage from sudden release of pressure,
isolate the regulator from the pressure
system and release all pressure from the
pilot and main valve before performing
maintenance operations.
Inspection
Under normal conditions, complete dismantling is not
recommended.
Check the following after operation. Then, schedule an
inspection as required.
1. Inspect for dirt collected at 4A bleed port.
2. Inspect all joints for leakage. Keep bolts tight to
avoid any leaks
Main Valve Maintenance
1. Connect a source of air or water pressure which
can be adjusted by hand to the No. 5B elbow.
2. Apply 30 psi / 2.07 bar to jack valve open and
prevent stem from turning while removing
stem nuts.
3. Use penetrating oil on the threads.
Grinding In
△ CAUTION
Seats and discs should never require
more than the lightest touch up with very
fine (400 grit) grinding compound. Heavy
grinding will produce galling, wider
seating surface and a groove in the disc,
all of which tend to cause leakage.
3. Reface a damaged surface before attempting to
grind it in.
4. Grind sparingly.
5. Main stem (key 13, Figure 4) is slotted for rotation
with a screwdriver, valve spring (key 14) is omitted
from the assembly during grinding.
6. Slip the stem into its normal position.
7. Apply compound to the disc. Place it on the stem
and guide plug, tighten with stem nut.
8. After grinding, disassemble and clean all parts.
7
Type E2

Table 3. Type E2, NPS 3/4 to 3 / DN 20 to 80 Parts List
ITEM
NUMBER
PART
NAME MATERIAL
VALVE SIZE, NPS / DN
3/4 / 20 1 / 25 1-1/4 / 32 1-1/2 / 40 2 / 50 2-1/2 / 65 3 / 80
1
Blind
Flange
Stud
Steel WAL05-05518-00 WAL04-10118-00 WAL05-05507-00 WAL04-05543-00 WAL04-10119-00 WAL04-10119-00 WAL04-05443-00
2
Blind
Flange
Nut
Steel WAL05-02847-00 WAL05-02851-00 WAL05-02854-00 WAL05-02856-00 WAL05-02860-00 WAL04-02860-00 WAL05-02856-00
3Blind
Flange Cast Iron WAL04-02171-00 WAL04-02173-00 WAL04-02176-00 WAL04-02178-00 WAL04-02180-00 WAL04-02185-00 WAL04-02157-00
4Gasket Non-
Asbestos WAL05-02381-01 WAL05-02362-01 WAL05-02382-01 WAL05-02365-01 WAL05-02366-01 WAL05-02367-01 WAL05-02369-01
5 Stem Nut Steel WAL05-02969-00 WAL05-02970-00 WAL05-02970-00 WAL05-02971-00 WAL05-02971-00 WAL05-02972-00 WAL05-02973-00
6Disk Guide
Plate Cast Iron WAL04-03576-00 WAL04-03479-00 WAL04-03480-00 WAL04-03478-00 WAL04-03500-00 WAL04-03509-00 WAL04-03496-00
7 Guide Plug Stainless
Steel - - - - - - - - - - - - WAL04-03751-01 WAL04-03750-00 WAL04-03754-00 WAL04-03755-00
8Integral
Disk
Stainless
Steel WAL04-01813-02 WAL04-01832-02 WAL04-01850-02 WAL04-01870-02 WAL04-01888-02 WAL04-01906-01 WAL04-01918-00
9Seat Ring Stainless
Steel WAL04-04075-01 WAL04-04084-01 WAL04-04092-01 WAL04-04496-01 WAL04-11593-00 WAL04-11650-00 WAL04-11549-00
10 Pipe Plug
1/4" Steel WAL04-03772-00 WAL04-03772-00 WAL04-03772-00 WAL04-03772-00 WAL04-03772-00 WAL04-03772-00 WAL04-03772-00
11 NPT Body Cast Iron - - - - - - - - - - - - - - - - - - - - - - - - - - - -
125 Body Cast Iron - - - - - - - - - - - - - - - - - - - - - - - - - - - -
12 Pipe Plug
1/8" Steel WAL04-03769-00 WAL04-03769-00 WAL04-03769-00 WAL04-03769-00 WAL04-03769-00 WAL04-03769-00 WAL04-03769-00
13 Stem Stainless
Steel WAL04-05241-02 WAL04-05254-02 WAL04-05254-02 WAL04-05325-01 WAL04-05247-02 WAL04-05324-02 WAL04-05394-03
14 Main
Spring Steel WAL05-05093-02 WAL05-05093-02 WAL05-05094-01 WAL05-05095-01 WAL05-05096-01 WAL05-05097-01 WAL05-05098-01
15 Groove Pin Steel WAL05-03247-00 WAL05-03247-00 WAL05-03247-00 WAL05-03251-00 WAL05-03251-00 WAL05-03253-00 WAL05-03254-00
16 Pressure
Plate Cast Iron WAL04-03621-00 WAL04-03700-00 WAL04-03622-00 WAL04-03623-01 WAL04-03624-00 WAL04-03625-00 WAL04-03626-00
17 Diaphragm
Bolt Steel WAL05-04770-00 WAL05-04770-00 WAL05-04773-00 WAL05-04773-00 WAL05-04773-00 WAL04-04773-00 WAL05-04774-00
18 Base Cast Iron - - - - - - - - - - - - - - - - - - - - - - - - - - - -
19 Diaphragm Hycar WAL05-01668-00 WAL05-01668-00 WAL05-01669-00 WAL05-01671-00 WAL05-01671-00 WAL05-01672-00 WAL05-01673-00
20 Hood Cast Iron WAL04-02571-00 WAL04-02571-00 WAL04-02605-00 WAL04-02606-00 WAL04-02607-00 WAL04-02608-00 WAL04-02648-00
21 Diaphragm
Nut Steel WAL05-02872-00 WAL05-02872-00 WAL05-02874-00 WAL05-02874-00 WAL05-02874-00 WAL05-02874-00 WAL05-02874-00
22 Stem
Washer
Stainless
Steel WAL04-06130-00 WAL04-06131-00 WAL04-10048-00 WAL04-06132-00 WAL04-12291-00 WAL04-06248-00 WAL05-06249-00
23 Retainer
Ring
Stainless
Steel WAL05-09382-00 WAL05-09383-00 WAL05-09383-00 WAL05-09384-00 WAL05-09392-00 WAL05-09385-00 WAL05-09386-00
24 Top Flange Cast Iron WAL04-02246-00 WAL04-02248-00 WAL04-02250-00 WAL04-02252-00 WAL04-02233-00 WAL04-02259-00 WAL04-02261-00
8
Type E2

Table 4. Type E2, NPS 4 to 10 / DN 100 to 250 Parts List
ITEM
NUMBER
PART
NAME MATERIAL
VALVE SIZE, NPS / DN
4 / 100 5 / 125 6 / 150 8 / 200 10 / 250
1
Blind
Flange
Stud
Steel WAL04-05443-00 WAL04-10119-00 WAL04-10120-00 WAL04-10120-00 WAL04-10120-00
2
Blind
Flange
Nut
Steel WAL05-2856-00 WAL05-02860-00 WAL05-02860-00 WAL05-02860-00 WAL05-02860-00
3Blind
Flange Cast Iron WAL04-02157-00 WAL04-2158-00 WAL04-02162-00 WAL04-02165-00 WAL04-02167-00
4Gasket Non-
Asbestos WAL05-02369-01 WAL05-02371-01 WAL05-02397-01 WAL05-02374-01 WAL05-02375-01
5 Stem Nut Steel WAL05-02973-00 WAL05-02947-00 WAL04-02975-00 WAL04-02976-00 WAL04-02977-00
6Disk Guide
Plate Cast Iron WAL04-03496-00 WAL04-03504-00 WAL04-03473-00 WAL04-03474-00 WAL04-03497-00
7 Guide Plug Stainless
Steel WAL04-03756-00 WAL04-03757-00 WAL04-03742-00 WAL04-03743-00 WAL04-03744-00
8Integral
Disk
Stainless
Steel WAL04-01922-00 WAL04-01931-00 WAL04-01940-00 WAL04-01994-00 WAL04-01951-00
9Seat Ring Stainless
Steel WAL04-11759-00 WAL04-11666-00 WAL04-15802-00 WAL07-43794-00 WAL04-15803-00
10 Pipe Plug
1/4" Steel WAL04-03772-00 WAL04-03772-00 WAL04-03772-00 WAL04-03772-00 WAL04-03772-00
11 125 Body Cast Iron - - - - - - - - - - - - - - - - - - - -
12 Pipe Plug
1/8" Steel WAL0403769-00 WAL04-03769-00 WAL04-03769-00 WAL04-03769-00 WAL04-03769-00
13 Stem Stainless
Steel WAL04-05266-02 WAL04-05268-02 WAL04-05269-02 WAL04-05273-02 WAL04-05272-01
14 Main
Spring Steel WAL05-05099-01 WAL05-05100-01 WAL05-05101-01 WAL05-05102-01 WAL05-05103-01
15 Groove Pin Steel WAL05-03256-00 WAL05-03257-00 WAL05-03259-00 WAL05-03260-00 WAL05-03262-00
16 Pressure
Plate Cast Iron WAL04-03627-00 WAL04-03628-00 WAL04-03629-00 WAL04-03630-00 WAL04-03631-00
17 Diaphragm
Bolt Steel WAL05-04774-00 WAL05-04775-00 WAL05-04780-00 WAL05-04780-00 WAL05-04782-00
18 Base Cast Iron - - - - - - - - - - - - - - - - - - - -
19 Diaphragm Hycar WAL05-01674-00 WAL05-01675-00 WAL05-01676-00 WAL05-01677-00 WAL04-01678-00
20 Hood Cast Iron WAL04-02609-00 WAL04-02618-00 WAL04-02610-00 WAL04-02611-00 WAL04-02612-00
21 Diaphragm
Nut Steel WAL05-02874-00 WAL05-02874-00 WAL05-02877-00 WAL05-02877-00 WAL05-02877-00
22 Stem
Washer
Stainless
Steel WAL04-06249-00 WAL04-06270-00 WAL04-06250-00 WAL04-06251-00 WAL04-06271-00
23 Retainer
Ring
Stainless
Steel WAL05-09386-00 WAL05-09387-00 WAL05-09388-00 WAL05-09389-00 WAL05-09390-00
24 Top Flange Cast Iron WAL04-02261-00 WAL04-02263-00 WAL04-02268-00 WAL04-02266-00 - - - -
9
Type E2

Figure 4. Type E2 Assembly Drawing
10
Type E2