Emerson Varec series Operation and maintenance manual

3500B

2020B

2010B

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

DISCLAIMER OF WARRANTIES

The contract between VAREC Vapor ControlInc.

and our customer states VAREC’s entire

obligation. The contents of this instruction

manual shall not become part of or modify

any prior or existing agreement, commitment

or relationship between VAREC Vapor Control

Inc. and our customer. There are no express

or implied warranties set out in this instruction

manual. The only warranties that apply are

those in the existing contract between VAREC

Vapor Control Inc. and our customer.

Before installation these instructions must be fully read and understood

33-11516 Rev. E

LIMITATIONS OF SELLER’S LIABILITY

If it is determined that this instruction manual

created some new warranties, VAREC Vapor

Control Inc. liability shall be limited to repair

or replacement under the standard warranty

clause. In no case shall VAREC Vapor Control

Inc. liability exceed that stated as limitations of

remedy in the contract between VAREC Vapor

Control Inc. and our customer

The VAREC Vapor Control Inc.

2010B/2020B/3500B Series pressure and/or

vacuum relief valves have not been tested by

VAREC Vapor Control Inc. under all possible

operational conditions, and VAREC Vapor

Control Inc. does not have all the data relative

to your application. The information in this

instruction manual is not all inclusive and

does not and cannot take into account all

unique situations. Consequently, you should

review this product literature in view of your

application. Ifyou have any further questions,

please contact VAREC Vapor Control Inc. for

assistance.

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

SAFETY PRECAUTIONS

Read and understand this instruction manual

before installing, operating or performing

maintenance on Varec Vapor Control Inc.

2010B/2020B/3500B series pressure and/or

vacuum relief valve. Follow all precautions

and warnings noted herein when installing,

operating or performing maintenance on this

equipment.

SAFETY PRECAUTION DEFINITIONS

CAUTION

Damage to equipment may result if this

precaution is disregarded.

WARNING

Relief valve must be isolated from tank pressure

before servicing. All gas must be blocked and

pressure safely vented.

WARNING

Direct injury to personnel or damage to

equipment which can cause injury to personnel

may result if this precaution is not followed.

OPERATION

When the internal tank pressure approaches

the valve setting, the pressure pallet begins to

lift. As the pressure exceeds the valve setting,

the pressure pallet lifts off the seat ring.

Excess product vapor is allowed to vent to the

atmosphere or through the pipe away system

adapter, relieving the over pressure condition.

The pallet automatically re-seats as the tank

pressure drops below the valve setting.

If a vacuum within the tank approaches the

valve setting, the vacuum pallet begins to

lift. As the vacuum exceeds the valve setting,

the vacuum pallet lifts off the seat ring.

Atmospheric air is allowed to flow into the

tank, relieving the excess vacuum condition.

The pallet automatically re-seats as the

vacuum drops below the valve setting.

GENERAL INFORMATION

The 2010B/2020B/3500B Series pressure

and/or vacuum relief valves are designed to

protect low pressure storage tanks, sludge

digesters and gas holders from excessive

pressure and/or vacuum. The valve is installed

on the storage tank roof or digester cover.

It may be used in combination with a VAREC

Vapor Control Inc. flame arrester.

The 2010B Series valve relieves pressure

directly to the atmosphere. A weatherhood and

mesh screen protect the pressure pallet and

guideposts. Vacuum pressure is relieved by

inbreathing ambient air.

The 2020B Series valve relieves pressure

through an enclosed outlet adapter. Product

vapors may be piped away rather than relieving

directly to the atmosphere. Vacuum pressure is

relieved by inbreathing ambient air.

The 3500B Series valve is a vacuum relief valve

that relieves negative pressure by inbreathing

ambient air.

CONSTRUCTION

Standard materials of construction include

cast body and cover(s). Pallets are dead weight

loaded with lead or coated steel weights and

include a flexible membrane sealing insert.

The pallet is loosely guided through a center

stem and pallet guide posts.

The “All-Weather” Models 2011B, 2021B and

3501B Series include a special coating on

portions of the pallets, seat rings and guides to

eliminate ice accumulation.

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

Note: spun sheet metal pallets have a

compensating weight on top of the pallet.

Donot remove this weight. Refer to Table 1

forincremental weight information.

3. To load vacuum pallet weights, perform the

following:

a. With vacuum cover and gasket removed,

remove vacuum pallet assembly

frombody.

b. Remove grip ring from pallet stem.

c. Non-variable setting: locate weight

marked “VACUUM” and place on top

of compensating weight and/or pallet.

Secure with grip ring.

Note: if setting is less than 2” WC,

weightwill be pre-loaded on the pallet.

d. Variable setting: each lead weight

is calibrated from 1” WC increment.

(Increments of ¼” WC and ½” WC may

be supplied on special order). Those

weights necessary for the initial specified

setting will be tagged separately from

any extra weight provided. Remove the

packaging on the weights tagged from

the initial specified setting and place

the weights on top of the compensating

weight. Secure with grip ring. Store

remaining weights for future use (in case

the setting needs to be increased).

e. Weigh entire pallet assembly (including

installed weights). Using Table 1, confirm

that the assembly is the proper weight to

achieve the required setting. Allowable

weight tolerance is +5%,-5%.

f. Remove any remaining packing material

from valve body. Wipe vacuum seat ring,

guide posts and pallet assembly with a

soft cloth to remove any material which

could affect valve operation.

INSTALLATION

2010B/2020B/3500B Series pressure and

vacuum relief valves must be mated with the

appropriate flange(s). The nozzle must be

plumb and the inlet flange face level to ensure

proper operation of the relief valve.

1. Remove the valve from the shipping

container. Check to see if extra loading

weights were bagged and packed

separately.

2. Remove the weatherhood and/or cover(s)

and all packing material above the pallets

and within the valve.

CAUTION

Whenever the weatherhood and/or cover(s)

is removed and reinstalled, the end of the

pallet stem must engage the stem guide in the

weatherhood and/or the stem guide chamber

in the cover(s) for proper seating and valve

operation.

g. Place pallet assembly on valve body seat.

Ensure that pallet moves freely within

guide posts and rests flat on the seat

ring.

h. Replace the cover gasket and cover.

Tighten cover screws uniformly.

Note: spun sheet metal pallets have a

compensating weight on top of the pallet.

Donot remove this weight. Refer to Table 1

forincremental weight information.

4. To load pressure pallet weights, perform the

following:

a. With weatherhood from Model 2010B, or

pipe away adapter cover and gasket from

Model 2020B removed, remove pressure

pallet assembly from body.

b. Remove grip ring from pallet stem.

c. Non-variable setting: locate weight

marked “PRESSURE” and place on top

of compensating weight and/or pallet.

Secure with grip ring. If setting is less

than 2” WC, weight will be pre-loaded

onthe pallet.

d. Variable setting: each lead weight

is calibrated from 1” WC increment.

(Increments of ¼” WC and ½” WC may

be supplied on special order). Those

weights necessary for the initial specified

setting will be tagged separately from

any extra weight provided. Remove the

packaging on the weights tagged from

the initial specified setting and place

the weights on top of the compensating

weight. Secure with grip ring. Store

remaining weights for future use (in case

the setting needs to be increased).

e. Weigh entire pallet assembly (including

installed weights). Using Table 1, confirm

that the assembly is the proper weight to

achieve the required setting. Allowable

weight tolerance is +5%,-5%.

f. Remove any remaining packing material

from valve body. Wipe pressure seat ring,

guide posts and pallet assembly with a

soft cloth to remove any material which

could affect valve operation.

g. Place pallet assembly on seat. Ensure

that pallet moves freely within guide

posts and rests flat on the seat ring.

h. Replace the weatherhood on

Model2010B or the pressure cover and

gasket on Model 2020B. Tighten all nuts

and screws uniformly.

CAUTION

The end of the pallet stem must engage the stem

guide chamber in the cover for proper seating and

valve operation.

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

5. Place the valve in a level position. Reach up

through the inlet flange and carefully push

up on the pressure pallet, then lower it onto

the seat. Pallet should move up and down

freely and rest flat on the seat ring.

6. Check the vacuum pallet by using a non-

sparking tool which will pass through the

center of the mesh screen. Push up on the

vacuum pallet, then lower it onto the seat.

Pallet should move freely and rest flat on

the seat ring.

7. Mount the valve on the flanged nozzle or

flame arrester using the appropriate full

faced gasket.

CAUTION

The end of the pallet stem must engage the

stem guide in the weatherhood or the stem guide

chamber in the cover for proper seating and valve

operation.

CAUTION

Do not mate a flat face flange to a raised face

flange.

If it necessary to mate an ANSI Class 125 F.F.

Flange with an ANSI Class 150 R.F. Flange, use

the proper spacer to convert the raised face to

aflat face.

8. Verify that the valve is level to permit proper

operation of the pallets. Install mounting

hardware, and tighten uniformly.

9. When using Model 2020B Series, install

connecting piping (if required) to outlet

flange. Use a full faced gasket and tighten

all mounting hardware uniformly.

Note: it is recommended that steel and iron

valves be given a coat of paint immediately

after installation is completed. Apply paint

toexternal surfaces only.

WARNING

• Relief valve must be isolated from tank pressure

before servicing. All gas must be blocked and

pressure safely vented. If no isolation valve

is present, carefully open vacuum cover or

lift pressure pallet, allowing pressure to vent

slowly.

• Wear appropriate gloves and/or breathing

apparatus if hazardous vapors are present.

MAINTENANCE

The valve should be inspected and cleaned

at periodic intervals. The first inspection

should be made approximately 30 days after

commissioning. Subsequent inspections should

be made every 30 days. The user may adjust the

schedule for his own convenience and safety,

depending upon the product being stored.

1. To inspect valve proceed as follows:

a. Remove the weatherhood and/or

cover(s).

b. Remove pallets one at a time. Identify the

pallets to ensure they are returned tothe

correct valve seat.

c. Inspect pallet inserts for ripples, tears,

or nicks, as well as seating surfaces for

debris, abrasion or pitting. Pallet edges

and guide posts should be free or burrs,

corrosion or other obvious damage.

Clean all components, replacing any

showing excess wear or damage. On the

“All-Weather” versions, inspect the PTFE

coating for any damage that wouldaffect

operation.

d. Reassemble in reverse order.

2. To replace pallet insert proceed as follows:

a. Remove weatherhood and/or cover(s)

and then pallet assembly.

b. Remove nut from base of pallet stem.

Remove retainer plate and insert.

Clean all surfaces and threads. Install

new insert, handling carefully to avoid

damaging insert or pallet.

c. Reassemble pallet and place on seat

of valve body. Ensure pallet assembly

moves freely within guide posts and

rests flat on seat ring.

d. Reinstall weatherhood and/or cover(s).

CAUTION

The end of the pallet stem must engage the stem

guide in the weatherhood and/or the stem guide

chamber in the cover(s) for proper seating and

valve operation.

CAUTION

The end of the pallet stem must engage the stem

guide in the weatherhood and/or the stem guide

chamber in the cover(s) for proper seating and

valve operation.

CAUTION

During periods of freezing weather, extra

maintenance is required for Models

2010B/2020B/3500B. Either remove the pallets or

apply generous portions of silicone grease to the

pallets, seat rings and guide posts. When using

silicone grease, inspect valves at least weekly.

This procedure is not required for “All-Weather”

Models 2011B, 2021B or 3501B.

2” 8.3 4.8

3” 16.8 9.7

4” 22.1 12.8

6” 43.4 25.1

8” 72.7 42.0

10” 120.1 69.4

12” 179.9 104.0

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

3. To replace pressure seat ring perform the

following:

a For Model 2010B, remove weatherhood,

screen, spacer ring, pallet assembly and

guide posts. For Model 2020B, remove

pressure cover, spacer (high setting),

gaskets, pallet assembly, outlet adapter,

and guide posts.

b. Remove seat ring and O-Ring from valve

body. Clean body, outlet adapter mating

surfaces and O-Ring Groove.

c. Install new O-Ring into groove; insure

that the O-Ring stays properly in groove

while installing seat ring.

d. Install new seat ring carefully to avoid

distortion. Reassemble guide posts

(2010B) or outlet adapter (2020B) to

secure seat. Ensure that seat is flush

and level with valve body.

e. Reassemble guide posts (2020B).

f. Place pallet assembly on valve body

seat.Ensure pallet assembly moves

freely within guide posts and rest flat

onseat ring.

g. Reassemble remaining parts in reverse

order.

CAUTION

The end of the pallet stem must engage the stem

guide in the weatherhood and/or the stem guide

chamber in the cover(s) for proper seating and

valve operation.

4. To replace vacuum seat ring perform the

following:

a. Remove vacuum cover, spacer (high

setting), gaskets, pallet assembly,

screen retainer, screen and guide posts.

b. Remove seat ring and O-Ring from valve

body. Clean body mating surface and

O-Ring groove.

5. Seat ring repair:

a. Seat may be ground or ground and

lapped (in place) to improve seal. Use a

lapping plate and medium valve grinding

compound, applying light pressure.

b. Finish lapping with a fine compound.

Avoid scoring or removing excessive

amounts of material.

c. Clean all compound from valve parts.

d. Hand buff seat with a medium grade

`Scotch-Brite’ (#7447) pad and light oil.

CAUTION

Whenever the weatherhood and/or cover(s)

is removed and reinstalled, the end of the

pallet stem must engage the stem guide in the

weatherhood and/or the stem guide chamber

in the cover(s) for proper seating and valve

operation.

c. Install new O-Ring into groove; insure

that the O-Ring stays properly in groove

while installing seat ring.

d. Install new seat ring carefully to avoid

distortion. Reassemble screen and

retaining ring to secure seat ring.

Ensurethat seat is flush and level with

valve body.

e. Reassemble guide posts.

f. Place pallet assembly on valve body seat.

Ensure pallet assembly moves freely

within guide posts and rests flat on seat

ring.

g. Reassemble spacer, cover and gaskets.

CAUTION

The end of the pallet stem must engage the stem

guide chamber in the cover for proper seating and

valve operation.

CALIBRATION

To verify setting, calculate the total necessary weight using the table below. Check this value

against the actual weight of the pallet assembly (including loading weights). Adjust loading

weights as required.

PALLET LOADING (INCLUDES WEIGHT OF PALLET)

Valve

size

Ounces of weight required

perounce of setting

Ounces of weight required

perinch of WC setting

Weight tolerance: + 5%/- 5%

Setting tolerance: + 0%/- 10%

2" 14⅛ 8½ 9⅞ 10

(359) (216) (251) (265)

3" 17

16 10¾ 12¼ 12

(446) (273) (311) (313)

4" 19⅛ 13⅜ 12

16 14

(486) (340) (316) (370)

6" 24 17 15

16 18¼

(610) (432) (395) (464)

8" 29⅞ 20⅝ 19

16 21¾

(759) (524) (497) (552)

10" 38

16 27 24

16 27

(976) (686) (633) (700)

12" 46⅜ 34 29⅜ 32

(1178) (864) (746) (837)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

FIGURE 1 - 2010B LOW SETTING

Drilling per ANSI Class 125 F.F.

SIZES AND DIMENSIONS

Size

in. (mm)

2" 14⅛ 8½ 9⅞ 13

(359) (216) (251) (338)

3" 17

16 10¾ 12¼ 15¼

(446) (273) (311) (387)

4" 19⅛ 13⅜ 12

16 17¼

(486) (340) (316) (438)

6" 24 17 15

16 21

(610) (432) (395) (548)

8" 29⅞ 20⅝ 19

16 24

(759) (524) (497) (630)

10" 38

16 27 24

16 29½

(976) (686) (633) (749)

12" 46⅜ 34 29⅜ 32

(1178) (864) (746) (837)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

FIGURE 2 - 2010B HIGH SETTING

Drilling per ANSI Class 125 F.F.

SIZES AND DIMENSIONS

Size

in. (mm)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

2010B REPLACEMENT PARTS

When ordering replacement parts, specify relief valve by model number, pipe size and serial number. Identify replacement parts by part number,

description and material where possible.

Item

No. Description Usage Material

Nominal pipe size

2” 3” 4” 6” 8” 10” 12”

1* Pressure pallet

assembly

Low set Alum. 06-11485-301 06-11485-401 06-11485-501 06-11485-601 06-11485-701 06-11485-801 06-11485-901

High set Alum. 06-11486-101 06-11486-201 06-11486-301 06-11486-401 06-11486-501 06-11486-601 06-11486-701

Low set 316 SST 06-11485-306 06-11485-406 06-11485-506 06-11485-606 06-11485-706 06-11485-806 06-11485-906

High set 316 SST 06-11486-106 06-11486-206 06-11486-306 06-11486-406 06-11486-506 06-11486-606 06-11486-706

2* Vacuum pallet

assembly

Low set Alum. 06-11485-101 06-11485-201 06-11485-001 06-11485-601 06-11485-701 06-11485-801 06-11485-901

High set Alum. 06-11486-101 06-11486-201 06-11486-301 06-11486-401 06-11486-501 06-11486-601 06-11486-701

Low set 316 SST 06-11485-106 06-11485-206 06-11485-006 06-11485-606 06-11485-706 06-11485-806 06-11485-906

High set 316 SST 06-11486-106 06-11486-206 06-11486-306 06-11486-406 06-11486-506 06-11486-606 06-11486-706

3* Seat ring All Alum. 02-10438-001 02-10251-001 02-05464-001 02-05478-001 02-05482-001 02-05487-001 02-05499-001

All 316 SST 02-10438-006 02-10251-006 02-05464-006 02-05478-006 02-05482-006 02-05487-006 02-05499-006

4Pallet insert All PTFE 02-10361-093 02-09704-093 B12741-093 B12742-093 B12743-093 B12744-093 B13288-093

5Pressure screen Low set HDPE 02-10439-051 02-10323-051 B16209-351 B14390-151 B14390-251 B14390-351 B14390-451

High set HDPE 02-10439-151 02-10323-151 B16209-451 B14390-551 B14390-651 B14390-751 B14390-451

6Vacuum screen All HDPE 02-11547-051 02-11547-151 02-11547-251 02-11547-351 02-11547-451 02-11547-551 02-11547-651

7Cover and spacer

gasket

Low set Fiber 02-11380-071 02-11381-071 02-11382-071 02-11383-071 02-11384-071 02-11385-071 02-11386-071

High set NBR 02-11380-075 02-11381-075 02-11382-075 02-11383-075 02-11384-075 02-11385-075 02-11386-075

8Hood Low press.

set with low

vac set

Alum. 06-11136-01 06-11136-02 06-11136-08 06-11137-01 06-11137-02 06-11137-03 06-11137-04

Steel 02-10455-003 02-10310-003 02-10066-103 D6064-203 C6433-203 C6436-203 C6500-203

304 SST 02-10455-005 02-10310-005 02-10066-105 E2331-205 C7119-205 E2322-205 E2317-205

High press.

set with low

vac set

Alum. 06-11136-01 06-11136-02 06-11136-03 06-11137-01 06-11137-02 06-11137-03 06-11137-04

Steel 02-10455-003 02-10310-003 02-10066-103 D6064-203 C6433-203 C6436-203 C6500-203

304 SST 02-10455-005 02-10310-005 02-10066-105 E2331-205 C7119-205 E2322-205 E2317-205

Low press.

set with high

vac set

Alum. 06-11545-01 06-11545-02 06-11545-03 06-11137-05 06-11137-06 06-11137-07 06-11137-04

Steel 02-11197-003 02-11199-003 02.11045-203 02-11004-003 02-11006-003 02-11007-003 C6500-203

304 SST 02-11197-005 02-11199-005 02-11045-205 02-11004-005 02-11006-005 02-11007-005 E2317-205

High press.

set with high

vac set

Alum. 06-11545-01 06-11545-02 06-11545-04 06-11137-01 06-11137-02 06-11137-03 06-11137-04

Steel 02-11197-103 02-11199-103 02-11045-303 D6064-203 C6433-203 C6436-203 C6500-203

304 SST 02-11197-105 02-11199-105 02-11045-305 E24331-205 C7119-205 E2322-205 E2317-205

9* Press. guide post

(hood attm’t)

Low set 316 SST 02-11411-106 02-11411-206 02-11412-106 02-11413-106 02-11413-206 02-11415-106 02-11415-206

High set 316 SST 02-11411-306 02-11411-406 02-11412-206 02-11413-306 02-11413-406 02-11415-306 02-11415-206

10* Pressure guide

post

Low set 316 SST ---02-11414-106 02-11414-206 02-11416-106 02-11416-206

High set 316 SST ---02-11414-306 02-11414-406 02-11416-306 02-11416-206

11* Vacuum guide

post

All 316 SST 02-11015-106 02-11015-206 02-11432-106 B14384-106 B14384-206 B14384-506 02-11433-106

12 Spacer ring All Alum. ---B14389-011 B14439-011 B14449-011 B16113-011

All Steel ---B14389-003 B14439-003 B14449-003 B16113-003

All 316 SST ---B14389-006 B14439-006 B14449-006 B16113-006

13 O-ring All NBR P014-03-285 P014-03-273 P014-03-286 P014-03-287 P014-03-288 P014-03-289 P014-03-290

14 Retaining ring All Polypropylene 02-11396 02-11397 02-11398 02-11399 02-11400 02-11401 02-11402

* For all weather parts, add -1 to end of listed part numbers.

2" 3" 4

16 5¼ 9

16 6¾ 14¾

(125) (133) (230) (171) (375)

3" 4" 6⅜ 5⅞ 10

16 8⅜ 18

(162) (149) (275) (213) (471)

4" 6" 86

16 12

16 8

16 20

(203) (173) (325) (214) (519)

6" 8" 8¾ 10 18

16 10½ 24¼

(222) (254) (478) (267) (616)

8" 10" 11

16 12⅛ 22⅛ 13⅛ 30¾

(284) (308) (562) (333) (781)

10" 12" 13⅝ 16¼ 27

16 16⅞ 38

(346) (413) (700) (429) (979)

12" 14" 15⅜ 18⅞ 32

16 19¾ 44¾

(391) (480) (814) (502) (1137)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

FIGURE 3 - 2020B LOW SETTING

Drilling per ANSI Class 125 F.F.

SIZES AND DIMENSIONS

Size A

in. (mm)

in. (mm)Inlet Outlet

2" 3" 4

16 5¼ 13⅝ 6¾ 14¾

(125) (133) (346) (171) (375)

3" 4" 6⅜ 5⅞ 15

16 8⅜ 18

(162) (149) (395) (213) (471)

4" 6" 86

16 16⅞ 8

16 20

(203) (173) (429) (214) (519)

6" 8" 8¾ 10 22

16 10½ 24¼

(222) (254) (560) (267) (616)

8" 10" 11

16 12⅛ 24⅝ 13⅛ 30¾

(284) (308) (625) (333) (781)

10" 12" 13⅝ 16¼ 29

16 16⅞ 38

(346) (413) (744) (429) (979)

12" 14" 15⅜ 18⅞ 32

16 19¾ 44¾

(391) (480) (814) (502) (1137)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

FIGURE 4 - 2020B HIGH SETTING

Drilling per ANSI Class 125 F.F.

SIZES AND DIMENSIONS

Size A

in. (mm)

in. (mm)Inlet Outlet

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

2020B REPLACEMENT PARTS

When ordering replacement parts, specify relief valve by model number, pipe size and serial number. Identify replacement parts by part number,

description and material where possible.

* For all weather parts, add -1 to end of listed part numbers.

Item

no. Description Usage Material

Nominal pipe size (inlet x outlet)

2" x 3" 3" x 4" 4" x 6" 6" x 8" 8" x 10" 10" x 12" 12" x 14"

1* Pallet assembly Low set. Alum. 06-11485-101 06-11485-201 06-11485-001 06-11485-601 06-11485-701 06-11485-801 06-11485-901

High set. Alum. 06-11486-101 06-11486-201 06-11486-301 06-11486-401 06-11486-501 06-11486-601 06-11486-701

Low set. 316 SST 06-11485-106 06-11485-206 06-11485-006 06-11485-606 06-11485-706 06-11485-806 06-11485-906

High set. 316 SST 06-11486-106 06-11486-206 06-11486-306 06-11486-406 06-11486-506 06-11486-606 06-11486-706

2* Seat ring All Alum. 02-10438-001 02-10251-001 02-05464-001 02-05478-001 02-05482-001 02-05487-001 02-05499-001

All 316 SST 02-10438-006 02-10251-006 02-05464-006 02-05478-006 02-05482-006 02-05487-006 02-05499-006

3Pallet insert All PTFE 02-10361-093 02-09704-093 B12741-093 B12742-093 B12743-093 B12744-093 B13288-093

4Screen All HDPE 02-11547-051 02-11547-151 02-11547-251 02-11547-351 02-11547-451 02-11547-551 02-11547-651

5Cover and spacer

gasket

Low set. Fiber 02-11380-071 02-11381-071 02-11382-071 02-11383-071 02-11384-071 02-11385-071 02-11386-071

High set. NBR 02-11380-075 02-11381-075 02-11382-075 02-11383-075 02-11384-075 02-11385-075 02-11386-075

6* Press. guide post All 316 SST 02-11015-106 02-11015-306 02-11432-106 B16553-406 B16553-206 B16553-506 02-11433-106

7* Vacuum guide post All 316 SST 02-11015-106 02-11015-206 02-11432-106 B14384-106 B14384-206 B14384-506 02-11433-106

8O-ring All NBR P014-03-285 P014-03-273 P014-03-286 P014-03-287 P014-03-288 P014-03-289 P014-03-290

9Retaining ring All Polypropylene 02-11396 02-11397 02-11398 02-11399 02-11400 02-11401 02-11402

2" 13⅛ 6

16 9⅞ 5

(333) (157) (251) (141)

3" 16⅛ 7⅝ 12¼ 6⅝

(409) (194) (311) (168)

4" 16

16 812

16 7⅝

(430) (203) (316) (194)

6" 21

16 10

16 15

16 11¼

(538) (256) (395) (268)

8" 26

16 12⅞ 19

16 13¼

(668) (327) (497) (337)

10" 32

16 16⅛ 24

16 16⅛

(837) (409) (633) (409)

12" 38⅞ 19¼ 29⅜ 18

(988) (489) (746) (478)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

FIGURE 5 - 3500B LOW SETTING

Drilling per ANSI Class 125 F.F.

SIZES AND DIMENSIONS

Size

in. (mm)

2" 13⅛ 6

16 9⅞ 10

(333) (157) (251) (256)

3" 16⅛ 7⅝ 12¼ 11⅜

(409) (194) (311) (289)

4" 16

16 812

16 11

(430) (203) (316) (297)

6" 21

16 10

16 15

16 14½

(538) (256) (395) (368)

8" 26

16 12⅞ 19

16 15

(668) (327) (497) (398)

10" 32

16 16⅛ 24

16 17

(837) (409) (633) (452)

12" 38⅞ 19¼ 29⅜ 18

(988) (489) (746) (478)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

FIGURE 6 - 3500B HIGH SETTING

Drilling per ANSI Class 125 F.F.

SIZES AND DIMENSIONS

Size

in. (mm)

VAREC SERIES 2010B/2020B/3500B PRESSURE AND VACUUM RELIEF VALVE

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

3500B REPLACEMENT PARTS