Type R Wafer Check Valve, 3-1/16 in × 15M Flanged, 15,000 psi, PSL 1 NM, EE-P+U

The Type R Wafer Check Valve, 3-1/16 in × 15M Flanged, 15,000 psi, PSL 1 NM, EE-P+U is a type r check valve rated for 15,000 psi working pressure (15K class) with 3-1/16 in API 6A 15M Flanged (RTJ) inlet and 3-1/16 in API 6A 15M Flanged (RTJ) outlet. Standard service rated.

Wafer-style swing check, wafer body fits between matching API 6A 6BX flanges. The disc pivots on a top-mounted hinge and seats by gravity / line pressure. Distinguished by the very short face-to-face dimension and the ring-joint (RTJ) flange interface — common at the inlet of choke manifolds and Christmas tree side-outlets.

Construction

• Type: Check — Type R (Wafer) — Type R
• Nominal size: 3-1/16 in
• Bore: Standard
• Body material: Forged AISI 4130
• Trim (disc/dart + seat): 316SS disc + 17-4PH stem/hinge
• Seal / elastomer: RPTFE seats + Viton (FKM) O-rings
• Inlet: 3-1/16 in API 6A 15M Flanged (RTJ)
• Outlet: 3-1/16 in API 6A 15M Flanged (RTJ)

Performance

Working pressure 15,000 psi. Hydrotested at 1.5× working pressure (shell test); seat-tested per API 6A acceptance criteria. Standard service rated for clean hydrocarbon and water-cut streams.

Installation

Install between matching API 6A 6BX ring-joint flanges, with the flow arrow on the body matching line direction. Studs and ring gasket per API 6A 6BX bolting; ensure the wafer is centered in the bore (use centering lugs if the studs allow).

Applications

• Sweet 15K production manifolds
• Service-iron Christmas tree side outlets
• Test-tree applications
• Cost-effective HP wellhead check

Compliance

• API 6A PSL 1 PR1
• Material class EE (API 6A chemistry / sour-service grading)
• Mill test reports per EN 10204 3.1 / 3.2

How to order

Confirm (a) line working pressure and pressure class, (b) inlet and outlet end-connection sizes / styles, (c) service class (standard vs sour), (d) installation orientation (especially for dart-type — vertical-flow-up only), and (e) any flow-velocity or noise constraints (over-spec'd swing checks can chatter at low flow). Indus quotes ex-Dubai for stock items and ex-works OEM for build-to-order items, with full mill test reports and pre-shipment hydrotest certificates.

Companion products

Pair with matched-pressure ball valves, plug valves, gate valves, and SSV/ESDs of the same end-connection family. For frac iron service trees, the 1502/602/206 Weco unions are the matched standard. For wellhead and Christmas tree service, the API 6A 5M/10M/15M flanged geometries pair check valves with master and wing gate valves.