Buy MTHJA52 Dual Pins Shear Relief Safety Valve for High Pressure Mud pump Manufacturers, Factory

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Buy MTHJA52 Dual Pins Shear Relief Safety Valve for High Pressure Mud pump Manufacturers, Factory

This shear relief valve is a new generation product developed on the basis of our normal safety valveÂ design. It introduces a dual shear pin mechanism that significantly extends the pressure handling capability and improves overall operational reliability. The valve body is manufactured from forged 35CrMo, ensuring high strength and durability under severe drilling conditions.

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Product Description

📋 Product Specifications

Product model	MTHJA52
Application	Installed at the discharge end of the drilling mud pump to safeguard the system against overpressure.
Valve type	Dual Shear Pins Type
Max. Working pressures	8700 PSI (60 MPa)
Temperature rating	-29°C to 120°C
Valve Body material	Forged alloy steel 35CrMo (Equivalent to AISI 4135)
Material of piston rubber and Cushion pad	Hydrogenated Nitrile Butadiene Rubber (HNBR)
Service life	With correct maintenance and timely replacement of shear pins, designed for more than 12,000~18,000 working hours, equivalent to 2~3 years under typical drilling conditions.
Standard	Produced under API Q1 / ISO 9001 quality management system
Applicable Fluids	Designed to operate with both water-based, oil-based and highly corrosive drilling fluids commonly used in oilfield drilling operations
Third party witness and inspection report available	Bureau Veritas (BV), CCS, ABS, SJS etc.

🛡 Product Features

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The shear relief valve acts as a critical safeguard by releasing pressure when unexpected surges occur, preventing damage to pumps, liners, and downstream components.

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In single pin configuration, the valve withstands up to 31 MPa, while in dual pins configuration, the maximum working pressure reaches 59.6 MPa.

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The flexibility of switching between single and dual shear pins allows onsite operators to select the appropriate protection level based on the rated pressure of the cylinder bore.

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Connection options include flanged ends and hammer union type connections for both bottom and bypass outlets, ensuring wide compatibility.

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The dual shear pin design offers a superior balance of safety assurance and operational adaptability compared to traditional single pin models.

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Frequently Asked Questions

What is the maximum pressure capacity of this valve?

The valve can handle up to 8700 PSI (60 MPa) when using the dual shear pin configuration.

What materials are used for the valve body and seals?

The body is made of forged alloy steel 35CrMo (AISI 4135 equivalent), and the piston rubber/cushion pads are made of high-grade HNBR for durability.

Is this valve compatible with corrosive drilling fluids?

Yes, it is specifically designed to operate with water-based, oil-based, and highly corrosive drilling fluids.

What is the expected service life of the MTHJA52 model?

With proper maintenance, it is designed for 12,000 to 18,000 working hours, which typically spans 2 to 3 years of operation.

Can I get third-party inspection reports for this product?

Yes, inspection reports from recognized bodies such as Bureau Veritas (BV), CCS, ABS, and SGS are available.

How does the dual shear pin design improve safety?

It allows for precise adjustment of the relief pressure, providing a higher range of protection and more flexibility for different drilling depths and pressures.