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.
Size Range
2" – 60"
Class Range
150 – 2500
Reference
Design Standard
- API 6D
- CSA Z245.15
Face to Face
- ASME B16.10
Flange
- ASME B16.5
Marking
- MSS SP-25
Inspection
- API 598
Pressure & Temp.
- ASME B16.34
Quality
- MSS SP-55
Fire Safe Design
- ISO 10497
Sour
- NACE MR 0175
- ISO 15156
Pressure Testing
- API 6D
Design Features
- —Full-port, piggable, and in-line repairable
- —Independent dual cover seals; pressure-seal cover standard on larger/high-pressure sizes (10"+ Class 1500, 8"+ Class 2500)
- —Forged steel disc (cast above 4") with 316 overlay on the sealing area
- —Full stainless steel seat with a replaceable, dovetailed O-ring protected from upstream flow
- —All O-rings anti-explosive-decompression (AED) rated
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.
View full Casting Quality program →