Product Introduction: Shear Relief Valve Shear relief valve is a critical overpressure safety protection component installed on the fluid end of triplex mud pumps, widely used in oil drilling, geological exploration and horizontal directional trenchless construction. It serves as the last safety barrier of the mud circulation system to prevent equipment damage caused by sudden pipeline blockage and abnormal pressure surge. Constructed with high-strength alloy steel via integrated forging and precision machining, this valve boasts reliable pressure bearing capacity and stable trigger performance. The built-in shear pin structure is calibrated according to different rated working pressures; once the mud pressure exceeds the preset safety threshold, the shear pin breaks instantly to release high-pressure slurry and rapidly reduce system pressure. The internal flow channel adopts streamlined design to avoid mud deposition and sand jamming, ensuring quick pressure relief response without delay. Precision-machined sealing surfaces cooperate with rubber sealing gaskets to eliminate mud leakage under normal operating pressure. Standard connecting threads and flange sizes deliver superior interchangeability, matching mainstream mud pump fluid end assemblies. The outer surface undergoes anti-rust and anti-corrosion coating to withstand long-term erosion of sand-containing drilling fluids and chemical additives in harsh open-air working conditions. The split assembly design enables fast on-site replacement of shear pins after pressure relief, greatly shortening maintenance downtime. It effectively protects liners, pistons, valve assemblies, pipelines and pulsation dampeners from rupture or deformation under overpressure, eliminating major safety hazards such as pipe bursting and equipment cracking. As a mandatory safety matching part for drilling slurry circulation systems, it guarantees safe and stable construction operation.