PRODUCTS
Bolted Bonnet Valve
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.
| 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
| 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
| 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.
Headquarter & Factory : Gongdan-ro 80, Seongsan-gu, Changwon-si, Gyengsangnam-do, Korea 51567
Seoul Office : 13th Floor Signature Tower West, 100 Cheonggyecheon-ro, Jung-gu, Seoul, Korea 04542
COPYRIGHT ⓒ 2016 PK VALVE CO., LTD. ALL RIGHTS RESERVED