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

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.

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

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

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

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.

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.

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

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

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

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

Blind

Flange

Stud

Steel WAL04-05443-00 WAL04-10119-00 WAL04-10120-00 WAL04-10120-00 WAL04-10120-00

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 - - - -

Type E2

Figure 4. Type E2 Assembly Drawing

Type E2

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