Suriin ang balbula
Ginamit upang maiwasan ang backflow, ang mga balbula na ito ay karaniwang na-aktibo sa sarili na nagpapahintulot sa balbula na awtomatikong magbubukas kapag ang media ay dumadaan sa balbula sa inilaang direksyon at malapit ay dapat dumaloy sa reverse.Including ang non-return swing check valve, cast iron check valve, wafe type check valve, thread end valve valve, double plate check valve, at flange check valve, atbp.
Mga Tampok ng Disenyo
- Bolted bonnet na may spiral-sugat na gasket
- Pag -angat o Piston Check
- Ball Check
- Swing Check
Mga pagtutukoy
- Pangunahing disenyo: API 602, ANSI B16.34
- Pagtatapos hanggang sa dulo: Pamantayan sa DHV
- Pagsubok at Inspeksyon: API 598
- Screwed Ends (NPT) sa ANSI/ASME B1.20.1
- Ang socket weld ay nagtatapos sa ASME B16.11
- Nagtatapos ang Butt Weld sa ASME B16.25
- End Flange: ANSI B16.5
Mga Opsyonal na Tampok
- Cast steel, haluang metal na bakal, hindi kinakalawang na asero
- Buong port o regular na port
- Welded bonnet o pressure seal bonnet
- Paggawa sa NACE MR0175 kapag hiniling
Suriin ang listahan ng materyal na balbula
| Bahagi | Pamantayan | Mababang temperatureservice | Hindi kinakalawang na asero | Mataas na temperatureservice | Maasim na serbisyo |
| Katawan | ASTM A216-WCB | ASTM A352-LCC | ASTM A351-CF8 | ASTM A217-WC9 | ASTM A216-WCB |
| Takpan | ASTM A216-WCB | ASTM A352-LCC | ASTM A351-CF8 | ASTM A217-WC9 | ASTM A216-WCB |
| Disc | ASTM A217-CA15 | ASTM A352-LCC/3166Overlay | 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 | Carbon Steel | ASTM A276-316 | ASTM A276-316 | Hindi kinakalawang na asero | Carbon Steel |
| Washer | Hindi kinakalawang na asero | ASTM A276-316 | ASTM A276-316 | Hindi kinakalawang na asero | Hindi kinakalawang na asero |
| Disc nut | ASTM A 276-420 | ASTM A276-316 | ASTM A276-316 | ASTM A276-420 | Hindi kinakalawang na asero |
| Disc washer | ASTM A 276-420 | ASTM A276-316 | ASTM A276-316 | ASTM A276-420 | Hindi kinakalawang na asero |
| Disc split pin | ASTM A 276-420 | ASTM A276-316 | ASTM A276-316 | ASTM A276-420 | Hindi kinakalawang na asero |
| Jonnetring joint | Malambot na bakal | ASTM A276-316 | ASTM A276-316 | ASTM A276-304 | Malambot 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 | Malambot na bakal | Carbon Steel | Hindi kinakalawang na asero | Carbon Steel | Carbon Steel |
| Pangalan ng Plato | Hindi kinakalawang na asero | Hindi kinakalawang na asero | Hindi kinakalawang na asero | Hindi kinakalawang na asero | Hindi kinakalawang na asero |
| Hook Screw | Carbon Steel | Carbon Steel | Hindi kinakalawang na asero | Carbon Steel | Carbon Steel |
