API 594 Dual Door Wafer Check Valves
Dual door wafer check valves that reduce or eliminate line shock on flow reversal, at a cost saving versus conventional swing check valves, from 2" to 32" and Class 150 to 1500 (additional sizes and classes available on request).
Size Range
2" – 32" (additional sizes on request)
Class Range
150 – 1500 (additional classes on request)
Reference
Design Standard
- ASME B16.34
- API 594
- API 6D
Face to Face
- API 594
- API 6D
Flange
- ASME B16.5
- ASME B16.47
Inspection
- API 598
Design Features
- —Spring-assisted dual-plate design reduces line shock on flow reversal
- —INCONEL X750 spring standard
Materials Available
Casting Material
- WCB
- LCB
- WC6
- WC9
- C5
- C12
- CF3
- CF3M
- CF8
- CF8M
- C95500
- 4A
- 5A
- Inconel 825/625
Forging Material
- A105
- LF2
- F11
- F12
- F304
- F321
- F347
- F316
- 304L
- 316L
- C61900
- F51
- F53
- F55
- Inconel
Literature
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Catalogue
Snapshot & One-Pager
Unique to Ranger
High-Pressure Pneumatic Shell Test
For all cast steel gate, globe, and check valves, as well as cast trunnion and floating ball valves, RANGER-FZV submerges the completed, uncoated valve in water and pressure tests the casting with nitrogen or compressed air. Pinholes or casting deficits invisible to a standard hydrotest are revealed as bubbles in the water — castings have failed this test after passing hydrotest.
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