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Bolted Bonnet Valve

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DUAL PLATE CHECK VALVE 

TYPICAL CONSTRUCTIONS

Dual plate check valve are supplied retainerless as standard. Our patented design does not have any threaded plugs in the pressure boundary and totally eliminates the potential leakpath to atmosphere. This design meet fugitive emission control.

VALVE FEATURES & ADVANTAGES

- Dual plate Check Valve is economical on installation and maintenance because installation is required less and light weight.
- Dual plate Check Valve is possible to prevent water hammering due to closing valve disk by operating the spring in valve before back flow. Also Due-Check valve prevents large piping the for big gap water levels.
- Dual plate Check Valve can apply variously in piping line because of less than existing Check Valve on restrictions of instaling direction.
- Life spans is longer than existing Check Valve, And preservation and repair are simple.
- It's possible to reduce maintenance fee due to longer durability than existing check valve, easy maintenance.

Type / Class, 150, 300, 600, 900,1500의 Cast Steel Valves Production Range의 정보가 있는 표입니다.
Range Application
NORMINAL SIZE 1 1/2”(40A) - 84”(2100A)
FLUID 207Water, Air, Steam, Gas, Sea Water
RATING JIS 10K, 20K, 30K, ANSI 150#, 300#, 600#, 900#, 1500#, PN 10, 16, 20, 40, AWWA C 207
END CONNECTION Wafer, Lugged, Flanged
TEMP,RANGE -50 ~ 600℃
MATERIAL BODY A126-CLB, A536 Gr. Carbon Steel (A216-WCB etc.) Stainless Steel (CF8, CF8M, CF3 etc.)B148-C97800, Special Steel (Alloy etc.)
DISC Carbon Steel (A216-WCB etc.) Stainless Steel (CF8, CF8M, CF3 etc.)
B148-C95800, Special Steel (Alloy etc.)
SEAT Rubber (EPDM, Buna-N etc.) Metal (Stainless Steel, Stellite #6 etc.)
SPRING Stanless Steel (304, 316 etc) Inconel (625, X750 etc)

MATERIAL TEMPERATURE LIMITS

UPPER TEMPERATURE LIMITS

UPPER TEMPERATURE LIMITS의 정보가 있는 표입니다.
MATERIAL UPPER LIMIT F(℃)
316SS 250(121)
INCONEL X 750 1000(537)
MONEL 400(204)
HASTELLOY 800(426)
ALLOY20 250(121)
BUNA-N(NBR) 250(121)
EPDM 300(149)
PTFE 450(232)
METAL OVELAY AS BODY
METAL TO METAL AS BODY

LOWER TEMPERATURE LIMITS

LOWER TEMPERATURE LIMITS의 정보가 있는 표입니다.
MATERIAL LOWER LIMIT F(℃)
WCB -20(-28.9)
LCC -50(-45.6)
CF8M -450(-268)
BUNA-N(NBR) -70(-56.7)
EPDM -14(-11.4)
VITON -40(-40)
PTFE -200(-129)
METAL OVELAY AS BODY

STANDARD DESIGN

WAFER TYPE
Retainerless design supplied as standard

ㆍANSIB16.5
- Flange dims to ANSI B16.5 (MSS-SP44>24")
- Face to face dims to API 594

ㆍAPI 605
- Flange dims to API 605
- Face to face dims to API 594

FLANGED TYPE
- Flange dims to ANSI B16.5 (MSS-SP44>24")
- Face to face dims to API 594

ㆍAPI 6A
- Flange dims to API 6A
- Face to face dims to API 6A

ㆍAPI 6D
- Flange dims to ANSI B16.5
- Face to face dims to API 6D

SOLID LUG TYPE
- Flange dims to ANSI B16.5 (MSS-SP44>24")
- Face to face dims to API 594

ㆍThreaded lug type also available
ㆍJIS 2210 & KS B1511
ㆍEXTENDED BODY
- Flange dims to ANSI B16.5

PRESSURE CLASSES

ㆍASME 150 TO 1500 LB, PN 10 TO 40.
ㆍJIS & KS 5K TO 20K

NOMINAL SIZE RANGE

ASME 150 Ib.2" to 60"
ASME 300 Ib.2" to 40"
ASME 600 Ib.2" to 36"
ASME 900 Ib.2" to 36"
ASME 1500 Ib.2" to 24"
Larger diameter VALVE for the respective pressure classes can be designed and manufactured on request.

RETAINERLESS DESIGN

Dual plate check VALVE are supplied retainerless as standard. Our patented design does not have any threaded plugs in the pressure boundary and totally eliminates the potential leakpath to atmosphere. This design meet fugitive emission control.

SEAT

The seat is designed equal pressure at the plate with the state of stationary hour. The shape of rubber seat could not be changed even in many operation because of having its most hardness satisfaction. The metal to metal seated valve is tested to API 598.

DISC (PLATE)

The two semicircle plate responsiveness of opening and closing is quick and it is strong against corrosion also has a strong durability.

SPRING

The springs have been designed to endure stresses and also ensure operating without failure for much cycles.

RUBBER LINED

Fully Rubber Lined Valve to avoid corrosion Inside are available.

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경남 창원시 성산구 공단로 80 / 서울사무소 서울시 중구 청계천로 100, 시그니쳐타워 서관 13층 COPYRIGHT ⓒ 2016 PK VALVE CO., LTD. ALL RIGHTS RESERVED