Swing Check Valve, Tee Body, 3-1/16 in × 15M Flanged × 3 in 1502 F, 15,000 psi, Standard Service

The Swing Check Valve, Tee Body, 3-1/16 in × 15M Flanged × 3 in 1502 F, 15,000 psi, Standard Service is a swing te check valve rated for 15,000 psi working pressure (15K class) with 3-1/16 in API 6A 15M Flanged (RTJ) inlet and 3 in 1502 Female Weco Union outlet. Standard service rated.

Tee-body swing-disc design — one inlet leg and a perpendicular outlet leg, with a hinged disc on the inlet path. Used at frac iron junctions where flow combines into a manifold trunk. The tee body absorbs reaction loads cleanly, and the disc seats on the inlet face when reverse flow occurs in the trunk.

Construction

• Type: Check — Swing — Swing TE
• Nominal size: 3-1/16 in × 3 in
• Bore: Full Port
• Body material: Forged AISI 4130
• Trim (disc/dart + seat): F6NM disc + Inconel 625 overlay seats
• Seal / elastomer: PEEK back-up + HNBR primary seals
• Inlet: 3-1/16 in API 6A 15M Flanged (RTJ)
• Outlet: 3 in 1502 Female Weco Union

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 with the flow arrow on the body matching line direction. For swing types, horizontal-with-cover-up is the preferred orientation; vertical-flow-up is also supported. Avoid vertical-flow-down installation (the disc fights gravity to close).

Applications

• Christmas tree to frac-iron interface
• Wellhead service-tree adapters
• 15K well-intervention manifolds
• Production tree side outlets to manifold

Compliance

• API 6A PSL 3 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.