Trunnion Ball Valve, 3-1/8 in × 5M Flanged, 5,000 psi, Sour Service
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Trunnion Ball Valve, 3-1/8 in × 5M Flanged, 5,000 psi, Sour Service3-1/8 in × 5M flanged trunnion-mounted ball valve per API 6A PSL 3 / PR1 / sour service. RTJ end-connection — wellhead service for production trees and Christmas trees.
Key features
- Valve Type: Ball — Trunnion
- Nominal Size: 3-1/8 in
- Working Pressure: 5000 psi
- End Connection (Inlet): 3-1/8 in API 6A 5M Flanged (RTJ)
- Service Class: Sour (NACE MR0175)
- Valve Type
- Ball — Trunnion
- Nominal Size
- 3-1/8 in
- Working Pressure
- 5000 psi
- Pressure Class
- 5K
- End Connection (Inlet)
- 3-1/8 in API 6A 5M Flanged (RTJ)
- Service Class
- Sour (NACE MR0175)
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Product description
The Trunnion Ball Valve, 3-1/8 in × 5M Flanged, 5,000 psi, Sour Service is a ball — trunnion ball valve rated for 5,000 psi working pressure with 3-1/8 in API 6A 5M Flanged (RTJ) inlet and 3-1/8 in API 6A 5M Flanged (RTJ) outlet. NACE MR0175 / ISO 15156 sour-service compliant — H₂S-rated trim and elastomers.
Construction
- Type: Ball — Trunnion
- Nominal size: 3-1/8 in
- Bore: Full Port
- Body material: Forged AISI 4130 — NACE-compliant
- Trim material: 410SS ball + Inconel-625 overlay seats
- Seal / elastomer: PEEK back-up + HNBR primary seals
- Inlet: 3-1/8 in API 6A 5M Flanged (RTJ)
- Outlet: 3-1/8 in API 6A 5M Flanged (RTJ)
Performance
Working pressure 5,000 psi (5K class). Manufactured to API 6A, PSL 3, PR1. Service class: Sour (NACE MR0175).
Applications
- Wellhead production trees (sour)
- Christmas-tree side-outlet valves
- 5K wellhead manifold blocks
- Subsea-adjacent surface equipment
Compliance
- API 6A
- Material class: PSL 3
- Performance requirement: PR1
- NACE MR0175 / ISO 15156 (sour-service)
How to order
Confirm (a) line pressure rating and pressure class, (b) inlet and outlet end-connection sizes / styles, (c) service class (sour vs standard), (d) bore preference (full vs reduced port), and (e) any temperature, fugitive-emissions, or fire-safe certification requirements. Indus quotes ex-Dubai with full mill test reports, API monogram traceability where applicable, and pre-shipment hydrostatic / shell test certificates.
Companion products
Pair with matched-pressure check valves, plug valves, and flow-iron unions of the same end-connection family. For wellhead service, also specify gate valves and surface safety valves of the equivalent API 6A pressure class. For frac applications, the 1502, 602, and 206 Weco unions are the most common matched standards.
Identification
| Parameter | Value |
|---|---|
| Valve Type | Ball — Trunnion |
Dimensions
| Parameter | Value |
|---|---|
| Nominal Size | 3-1/8 in |
| End Connection (Inlet) | 3-1/8 in API 6A 5M Flanged (RTJ) |
| End Connection (Outlet) | 3-1/8 in API 6A 5M Flanged (RTJ) |
| Bore Type | Full Port |
Performance
| Parameter | Value |
|---|---|
| Working Pressure | 5000 psi |
| Pressure Class | 5K |
| Service Class | Sour (NACE MR0175) |
Compliance
| Parameter | Value |
|---|---|
| API Specification | API 6A |
| PSL Class | PSL 3 |
| PR Class | PR1 |
Construction
| Parameter | Value |
|---|---|
| Body Material | Forged AISI 4130 — NACE-compliant |
| Trim Material | 410SS ball + Inconel-625 overlay seats |
| Seal / Elastomer Material | PEEK back-up + HNBR primary seals |
Shipping & lead time
Lead TimeEx-stock from Dubai — delivered within 3 working days in the UAE. Export orders ship on the lane stated for the destination.
OriginMade in USA
What is the working pressure rating?▾
5,000 psi working pressure, 5K class. The valve is hydrotested at the standard 1.5× shell-test pressure and seat-tested per the applicable specification. The working pressure is fixed by both the body design and the end connection — the union or flange rating is the limiting factor at the joint.
What end connections does this valve use?▾
Inlet: 3-1/8 in API 6A 5M Flanged (RTJ). Outlet: 3-1/8 in API 6A 5M Flanged (RTJ). These are wellhead flanged ends per API 6A — ring-joint gasket (RTJ) sealing. Studs and nuts to match the API 6BX hub bolting pattern.
Is this valve suitable for sour-service (H₂S) wells?▾
Yes — this valve is fully NACE MR0175 / ISO 15156 compliant for sour-service exposure (H₂S-bearing streams). Body, stem, ball, and elastomers are selected to the NACE hardness and chemistry limits. Provide an inquiry data sheet listing partial pressures, temperature, and chloride levels and we will confirm trim suitability.
Is this a full-port or reduced-port ball?▾
Full Port. A full-port ball matches the bore ID through the body, allowing pigging and minimising pressure drop — preferred for frac iron and wellhead service.
What materials are used for the body, trim, and seals?▾
Body: Forged AISI 4130 — NACE-compliant. Trim (ball + stem): 410SS ball + Inconel-625 overlay seats. Seals / elastomers: PEEK back-up + HNBR primary seals. Alternative trim and seal materials (Inconel, F22, F51, FFKM, Devlon, RPTFE) are available on request for higher-temperature, sour, or chemical service.
What standards and certifications does this valve comply with?▾
API 6A, material class PSL 3, performance requirement PR1. Mill test reports per EN 10204 3.1 / 3.2 supplied with each unit. Plus NACE MR0175 / ISO 15156 sour-service compliance.
What is the lead time?▾
Common combinations are stocked or short-lead from OEM source — typical lead time 28 working days. Sour-service variants and unusual sizes / pressure classes ship 8–14 weeks ex-works depending on OEM build slots. Contact us with the full size + pressure + service spec for a firm delivery date.
Can this valve be integrated into a manifold skid or frac iron train?▾
Yes — Indus also supplies matched plug valves, check valves, swivel joints, integral fittings, and frac flow iron in the same Weco / flanged end-connection family. We can quote complete frac trees, manifold blocks, choke skids, and Christmas trees on request. Specify upstream and downstream connections, pressure class, and service class on the RFQ and we will return a complete bill of materials.
Shipped worldwide from our Dubai warehouse. Transit, routes and documentation for 126 destinations
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