High-pressure Weco swing check valves rated to 10,000 psi with integral wing union ends. Available in 2″ and 3″ sizes with MxF and FxM configurations. Sour gas service ready with fluoroelastomer seals.
Weco Swing Check Valves – High Pressure Flowline Check Valves
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Description
Weco Swing Check Valves – Reliable Backflow Prevention for Oilfield Flowlines
Weco Swing Check Valves are engineered to provide dependable one-way flow control in high-pressure oilfield applications. Designed to isolate well servicing equipment from backflow of high-pressure fluids, these rugged valves deliver superior sealing performance against sour gas environments up to 10,000 psi (690 bar). Available with integral Weco wing union ends for quick, tool-free connection and disconnection.
Our swing check valves feature a patented flowline design that ensures minimal pressure drop while maintaining positive shutoff. The fluorocarbon elastomer seals provide excellent chemical resistance and long service life in harsh oilfield conditions.
Key Features & Benefits
- High Pressure Rating: Rated for working pressures up to 10,000 psi (690 bar) – suitable for the most demanding well servicing operations
- Sour Gas Service: Seals effectively against sour gas fluids (H₂S environments) for enhanced safety in critical applications
- Integral Weco Wing Union Ends: Quick-connect design eliminates the need for threading or welding – saves rig time and reduces labor costs
- Optional Downstream Vent: Available with or without downstream vent configuration (consult factory for specific requirements)
- Fluoroelastomer Seals: Premium FKM seals offer excellent chemical resistance, temperature stability, and extended service life
- Rugged Construction: Heavy-duty body design withstands rough handling and harsh field conditions
- Multiple Configurations: Male × Female (MxF) and Female × Male (FxM) configurations available to suit different piping layouts
Technical Specifications – Sour Gas Weco Swing Check Valves Reference Chart
| Size | Configuration | End Connection | CWP psi (bar) | Part No. | Weight lbs (kg) | Price |
|---|---|---|---|---|---|---|
| 2-inch (50mm) | MxF | Weco 1502 | 10,000 (690) | 3269175 | 84 (38.1) | CF |
| 2-inch (50mm) reverse flow | FxM | Weco 1502 | 10,000 (690) | 3269176 | 84 (38.1) | CF |
| 3-inch (80mm) | MxF | Weco 1502 | 10,000 (690) | P502934 | 122 (55.3) | CF |
CF = Consult Factory for pricing. All dimensions and weights are approximate. Consult factory for detailed dimensional drawings.
Applications
- Well servicing and workover operations
- High-pressure flowline systems
- Cementing and circulating operations
- Sour gas service environments
- Fracturing and stimulation operations
- Production testing and flowback
Product Reference Drawing

Why Choose Our Weco Swing Check Valves?
Our Weco-compatible swing check valves are manufactured to exacting standards to ensure full interchangeability with existing Weco flowline equipment. Each valve undergoes rigorous pressure testing and inspection before shipment. We maintain comprehensive inventory for fast delivery to minimize your downtime.
Contact us today for a quote or to discuss your specific flowline requirements. Our engineering team is ready to assist with product selection and custom configurations.
Additional information
| Pressure Rating | 10,000 psi (690 bar) |
|---|---|
| End Connection | Weco 1502 Wing Union |
| Seal Material | Fluoroelastomer (FKM) |
| Sizes Available | 2-inch (50mm), 3-inch (80mm) |
| Configuration | MxF, FxM |
| Service Type | Sour Gas Service, Standard Service |

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