Meridian™ API 6D Check Valve
General Features
- Firesafe design
- Standard valves meet NACE
- Full-port piggable
- In-line repairable
- Bleed Plug on cover (to confirm pressure relief prior to servicing)
- Support feet on 6” and larger
- Lifting eye bolts on 4” and larger
- Suitable for horizontal and vertical (flow-up) installation. Engineering review of process conditions required for vertical installation.
- Raised boss provided for optional drain plug
- Standard document package BS/EN 10204-3.1
- All O-rings are AED (anti-explosive decompression) design
Cover Features
- Independent dual cover seals (non-pressure seal design)
- Pressure seal cover standard for larger/high pressure valves
- 10” and larger ASME 1500
- 8” and larger ASME 2500
Seat Design Features
- Full stainless steel seat (ASTM A182 F316)
- Forged steel disc (cast for sizes >4”) with 316 overlay
on sealing area
- Replaceable O-ring in seat protected from upstream flow
- Dovetail groove to keep O-ring firmly in place
- Threaded in replaceable seat
Optional Features
- External lever arm and weight (design changes apply, additional information available on request)
- Tapped drain plug
Reference Standards
Design Standard:
Face to Face:
Flange:
Marking:
Inspection:
Pressure & Temp.:
Quality:
Fire Safe Design:
Sour:
Pressure Testing:
