3″ 8,000 PSI Manual Reset Relief Valves – High-Pressure Overpressure Protection

Description

3″ 8,000 PSI Manual Reset Relief Valves – High-Pressure Overpressure Protection

3″ 8,000 PSI Manual Reset Relief Valves set the standard for strength and performance in high-pressure oilfield applications. These rugged relief valves are engineered to handle extreme pressure conditions up to 8,000 PSI (552 Bar), providing critical overpressure protection for well servicing equipment, manifolds, and flowline systems.

Both the top cover and sub are extra heavy flanged for maximum safety. The bonnet base has been modified for enhanced strength and rigidity, delivering more reliable operation under the most demanding conditions. With ABS Design Assessment certification, these valves meet the stringent safety requirements of offshore and onshore drilling operations worldwide.

Key Features & Benefits

• Ultra-High Pressure Rating: Rated for 3,000 – 8,000 PSI (206-552 Bar) – handles the most demanding high-pressure oilfield applications
• Extra Heavy Flanged Construction: Both top cover and sub feature extra heavy flanging for maximum safety and structural integrity
• Reinforced Bonnet Base: Modified bonnet base design provides enhanced strength and rigidity for reliable high-pressure operation
• Single Piece Subs: Improved sealing performance with reduced part count – fewer leak paths and lower maintenance requirements
• Integral Outlet Connections: No welding or bolting required – simplifies installation and eliminates potential failure points
• Single Chucking Precision: High-precision HMC machined parts ensure consistent performance and dimensional accuracy
• Heavy Duty Bonnet: Ensures better operation at high pressures than competing designs – resists deformation under extreme loads
• Advanced Seal Technology: Polyethylene and fluoropolymer main seals provide excellent chemical resistance and extended service life
• ABS Design Assessed: 2 models carry ABS Design Assessment certification – meets offshore safety standards
• Xylan Coated Internal Surfaces: Internal surfaces coated with Xylan for superior corrosion resistance and longer service life
• Weco Hammer Union Connections: 3″ Figure 1502 FMC Weco end connections for quick, tool-free make-up and break-out
• No Load Bearing Threads: Threaded connections are not load-bearing – structural loads are carried by the flange design
• Sour Gas Service: Standard and Sour Gas (H₂S) service types available for corrosive environments
• Hydraulically Balanced Piston: Ensures smooth, consistent operation across the entire pressure range

Complete Specifications Reference Chart

Applications

• High-pressure well cementing operations
• Fracturing (fracking) manifold protection
• Production testing and flowback systems
• Offshore drilling platform pressure protection
• Mud pump overpressure relief
• High-pressure flowline systems
• Manifold overpressure protection
• Sour gas production environments

Technical Reference Diagram

Why Choose Our 8,000 PSI Relief Valves?

Our 3″ 8,000 PSI manual reset relief valves are built for the most demanding high-pressure applications in the oilfield industry. The extra heavy flanged construction, reinforced bonnet base, and hydraulically balanced piston design deliver superior performance and reliability compared to standard relief valves.

With ABS Design Assessment certification, these valves are qualified for offshore installations where safety standards are most stringent. The Xylan-coated internal surfaces provide exceptional corrosion resistance, while the integral outlet connections eliminate potential leak paths associated with welded or bolted designs.

Contact us today for a quotation or to discuss your specific high-pressure protection requirements. Our engineering team can help you select the right valve configuration, pressure setting, and end connections for your application.