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-Product Model: 150601080045A012
-Product Name: Bypass Relief Valve (Pilot-operated, for bypass unloading and pressure stabilization)
– Compatible models/scenarios: Excavators, loaders, and other construction machinery; hydraulic circuits, oil filter bypasses, etc. (Specifications can be verified)
– Structure type: Pilot-operated bypass structure with grooved pressure relief, automatic pressure sensing, adjustable set pressure, and relief from oil pressure rise.
-Material Specifications: Body: 20# forged steel (304/316L stainless steel can be customized), valve core: hardened alloy, seals: FKM, surface anti-corrosion.
As a core safety protection and pressure regulation component of hydraulic systems, the 150601080045A012 bypass relief valve boasts four major advantages: “precise pressure regulation, stable unloading, low noise, and tight sealing.” It is widely used in the hydraulic circuits of construction machinery such as excavators and loaders, as well as the bypass circuits of oil filters. It plays a role in overpressure unloading, pressure stabilization, and circuit protection. Through the cooperation of the pilot valve and the main valve, it automatically senses pressure, releases fluid when overpressured, suppresses pressure spikes, alleviates oil pressure rise, and improves circuit stability. It is highly adaptable and easy to install and debug.
Compared to ordinary bypass relief valves, this product uses high-quality materials and is precision-machined, strictly adhering to relevant industry standards. The main body is made of 20# forged steel (stainless steel can be customized), the valve core is made of hardened alloy, and the seals are made of FKM fluororubber. It is manufactured through multiple processes, resulting in a dense structure that is resistant to high pressure, wear, and corrosion. The grooved pressure relief structure effectively reduces noise, solves problems such as inaccurate pressure regulation and seal failure, reduces maintenance costs, is suitable for medium and high pressure conditions, and precisely matches the bypass circuit requirements of engineering machinery.
-Product Model: 150601080045A012
-Product Name: Bypass Relief Valve (Pilot-operated, for bypass unloading and pressure stabilization)
– Compatible models/scenarios: Excavators, loaders, and other construction machinery; hydraulic circuits, oil filter bypasses, etc. (Specifications can be verified)
– Structure type: Pilot-operated bypass structure with grooved pressure relief, automatic pressure sensing, adjustable set pressure, and relief from oil pressure rise.
-Material Specifications: Body: 20# forged steel (304/316L stainless steel can be customized), valve core: hardened alloy, seals: FKM, surface anti-corrosion.
– Dimensions: Compatible with DN20 pipes, nominal diameter 20mm, valve body length 115mm, inlet/outlet diameter 20mm, internal thread M56×2, flatness ≤0.005mm, tolerance GB/T 1804-m
– Pressure parameters: Rated pressure PN31.5MPa, maximum pressure 94.5MPa, adjustment range 1.5-45MPa, error ≤5%, leakage ≤0.01ml/h, response time ≤12ms
-Mechanical parameters: Rockwell hardness HRC42-47, tensile strength ≥550MPa, impact toughness ≥85J/cm², flexible valve core, precise pressure regulation, smooth unloading, and low noise.
– Environmental parameters: Operating temperature -30℃ to 120℃, adaptable to dusty, oily, and high-vibration working conditions, rust-resistant and anti-aging.
– Machining process: Precision forging + CNC turning + precision grinding + corrosion protection + pressure adjustment, resulting in a burr-free surface, precise threads, and noise reduction through groove design.
-Installation method: Threaded connection, can be installed vertically or horizontally. Clean the interface and install according to the flow direction. Calibrate the pressure. Do not install forcefully or overload.
-Quality Standards: Compliant with GB/T 24919 and other standards, fully tested, accompanied by a certificate of conformity, and meets safety regulations.
-Service life: ≥5000 hours under normal operating conditions, ≥3000 hours under high pressure and heavy load, far exceeding that of ordinary aftermarket products.
Our 150601080045A012 bypass relief valve undergoes rigorous testing and debugging, ensuring traceable quality and reliable after-sales service. We support bulk purchasing and customization, making it suitable for various bypass scenarios in engineering machinery and a preferred component for the safe operation of hydraulic systems.

22 60100467 Blocked
23 150602080013A022 Main relief valve
24 60357921 Bypass relief valve
25 150601080045A012 Bypass relief valve
26 60075542 (Traffic jam)
27 60202293 O-ring
28 60357900 Valve cover
29 60357915 Check valve
30 60357917 Spring
31 60075591 Spring
32 60075548 Check valve
33 60271306 Bucket regeneration shut-off valve
34 60292571 Locking Valve
35 60357902 Holding Valve
60 60221657 O-ring
*For other spare parts procurement needs, please contact us!