Check Valve
Ginagamit para maiwasan ang backflow, ang mga valve na ito ay karaniwang self-activated na nagpapahintulot sa valve na awtomatikong bumukas kapag ang media ay dumaan sa balbula sa nilalayon na direksyon at ang pagsasara ay dapat umagos pabalik-balik. Kasama ang Non-Return Swing Check Valve, Cast Iron Check Valve, Wafe Type Check Valve, Thread Ends Check valve, Double Plate Check Valve, at flange Check Valve, atbp.
Mga Tampok ng Disenyo
- Bolted na bonnet na may spiral-wound gasket
- Lift o Piston Check
- Pagsusuri ng bola
- Swing check
Mga pagtutukoy
- Pangunahing Disenyo: API 602, ANSI B16.34
- Dulo hanggang Wakas: DHV Standard
- Pagsubok at Inspeksyon: API 598
- Screwed Ends (NPT) sa ANSI/ASME B1.20.1
- Ang socket weld ay nagtatapos sa ASME B16.11
- Ang butt weld ay nagtatapos sa ASME B16.25
- End Flange: ANSI B16.5
Opsyonal na Mga Tampok
- Cast Steel, Alloy Steel, Hindi kinakalawang na Bakal
- Buong Port o Regular na Port
- Welded Bonnet o Pressure Seal Bonnet
- Paggawa sa NACE MR0175 kapag hiniling
Check Valve Material List
| Bahagi | Pamantayan | Mababang temperaturaSerbisyo | Hindi kinakalawang na asero | Serbisyong Mataas na Temperatura | Serbisyong Maasim |
| KATAWAN | ASTM A216-WCB | ASTM A352-LCC | ASTM A351-CF8 | ASTM A217-WC9 | ASTM A216-WCB |
| TAKOT | ASTM A216-WCB | ASTM A352-LCC | ASTM A351-CF8 | ASTM A217-WC9 | ASTM A216-WCB |
| DISC | ASTM A217-CA15 | ASTM A352-LCC/316OVERLAY | ASTM A351-CF8 | ASTM A217-WC9/STLOVERLAY | ASTM A217-CA15-NC |
| HINGE | ASTMA216-WCB | ASTM A352-LCC | ASTM A351-CF8 | ASTM A217-WC9 | ASTM A216-WCB |
| SEAT RING | ASTM A105/STLOVERLAY | ASTM A182-F316/STLOVERLAY | ASTM A182-F316/STLOVERLAY | ASTM A182-F22/STLOVERLAY | ASTM A105/STLOVERLAY |
| HINGE PIN | ASTM A276-410 | ASTM A276-316 | ASTM A276-316 | ASTM A276-410 | ASTM A276-416-NC |
| PLUGFOR HINGE PIN | BAKAL NG CARBON | ASTM A276-316 | ASTM A276-316 | STAINLESS NA BAKAL | BAKAL NG CARBON |
| MAGLABAS | STAINLESS NA BAKAL | ASTM A276-316 | ASTM A276-316 | STAINLESS NA BAKAL | STAINLESS NA BAKAL |
| DISC NUT | ASTM A 276-420 | ASTM A276-316 | ASTM A276-316 | ASTM A276-420 | STAINLESS NA BAKAL |
| DISC WASHER | ASTM A 276-420 | ASTM A276-316 | ASTM A276-316 | ASTM A276-420 | STAINLESS NA BAKAL |
| DISC SPLIT PIN | ASTM A 276-420 | ASTM A276-316 | ASTM A276-316 | ASTM A276-420 | STAINLESS NA BAKAL |
| BONNETRING JOINT | SOFT NA BAKAL | ASTM A276-316 | ASTM A276-316 | ASTM A276-304 | SOFT NA BAKAL |
| BONNET STUD | ASTM A193-B7 | ASTM A320-L7M | ASTM A193 B8 | ASTM A193-B16 | ASTM A193-B7M |
| BONNET NUT | ASTM A194-2H | ASTM A194-7M | ASTM A194 8 | ASTM A194-4 | ASTM A194-2HM |
| RIVET | SOFT NA BAKAL | BAKAL NG CARBON | STAINLESS NA BAKAL | BAKAL NG CARBON | BAKAL NG CARBON |
| NAME PLATE | STAINLESS NA BAKAL | STAINLESS NA BAKAL | STAINLESS NA BAKAL | STAINLESS NA BAKAL | STAINLESS NA BAKAL |
| HOOK SCREW | BAKAL NG CARBON | BAKAL NG CARBON | STAINLESS NA BAKAL | BAKAL NG CARBON | BAKAL NG CARBON |
