Specialty Check Valves
RANGER offers a range of specialty check valves including API 6D swing check, API 594 check and dual door check, API 6D nozzle check, and pressure seal check valves.
Configurations
API 6D Swing Check Valves
Inline repairable and full-port piggable. Suitable for horizontal and vertical installations, sizes from 2" to 60" and ASME Class 150 to 2500.
View full details
API 594 Check Valves
Cast steel check valves for a broad range of applications and industries, from 2" to 60" and Class 150 to 2500.
View full details
API 594 Dual Door Wafer Check Valves
Reduce or eliminate line shock on flow reversal, at a cost saving versus conventional swing check valves.
View full details
API 6D Nozzle Check Valves
Axial-flow nozzle design, the preferred solution for preventing backflow or water hammer on critical process equipment.
View full detailsPressure Seal Check Valves
Pressure seal bonnet check valve design, standard for larger and higher-pressure services — 10" and larger at Class 1500, 8" and larger at Class 2500.
View full detailsApplicable Standards
- API 6D
- API 594
- API 598
- ISO 5208
- ISO 10497
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
Select what you'd like below and we'll email you secure download links.
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.
View full Casting Quality program →
