Import Air-Controlled Change Valve 4wp6d60/N — Buy in wholesale FOB from Supplier in China

Amlpp Petroleum Parts offers the air-controlled change valve model 4WP6D60/N, a pneumatically actuated directional control valve for petroleum drilling and production equipment. The valve operates through air pressure control, with typical applications in mud pump systems, wellhead control panels, and drilling rig fluid circuits. The 4WP6 series designation indicates a 4-way, 2-position or 3-position spool valve with pilot air operation, common in hydraulic and pneumatic manifolds for oilfield service. The D60 likely specifies port size or flow capacity, while the /N suffix typically denotes a specific spool configuration or spring return arrangement in manufacturer nomenclature.

The valve body construction typically employs carbon steel or ductile iron for pressure containment, with nitrile or fluorocarbon elastomer seals rated for petroleum contact. Standard working pressures for this valve class range from 0.15 to 0.8 MPa for pilot air supply, with main circuit pressures depending on application requirements. The 4WP6 series valves typically handle flow rates proportional to their port size, with D60 indicating a nominal 60 mm port or related flow coefficient. Spool valves of this type offer low leakage paths when closed and tolerate moderate contamination better than poppet designs. Surface treatments include phosphate coating or zinc plating for corrosion resistance in outdoor oilfield environments.

Primary buyers include oilfield service companies, drilling contractors, and petroleum equipment rebuilders servicing mud pumps, well servicing units, and workover rigs. The valve functions in directional control circuits for actuating cylinders, motors, or other valves in pneumatic logic systems. Compatibility with existing 4WP6 series manifolds simplifies maintenance parts sourcing. Buyers should confirm port configuration (metric or imperial threads, flange connections), spool centre condition (open, closed, or tandem centre), and seal material compatibility with anticipated hydraulic fluids or lubricants. Amlpp Petroleum Parts lists numerous concurrent product lines including triplex pump components, clutch sets, and filtration equipment, suggesting broad petroleum machinery parts coverage.

Amlpp Petroleum Parts operates from No. 2550 Hongqiao Road, Changning District, Shanghai, China, with the listed address spanning 200050 postal code. The supplier holds harbor trust tier classification. Response rate data shows 0.00 percent with zero average response hours, indicating no verified communication metrics are available. The company's broad product catalogue spans triplex pump parts, clutch assemblies, filtration equipment, and numerous petroleum machinery components, suggesting trading or distribution operations alongside potential manufacturing.

The source description presents an extensive parts list without coherent company history, factory credentials, or verification details. No ISO certification, year of establishment, registered capital, or named client references appear. The supplier lists a dedicated website (amlppmfg.com) with specific product pages referenced for certain items. Buyers should treat Amlpp Petroleum Parts as an unverified supplier requiring direct due diligence. Request factory audit reports, quality system certification, and reference customers before substantial orders. The Shanghai location offers logistical advantages but does not confirm manufacturing origin for specific products.