Import Api Ja-3 Shear Relief Valves — Buy in wholesale FOB from Supplier in China

The API JA-3 shear relief valve, manufactured by Dongying Lake Petroleum Technology Co., Ltd in Dongying, China, is a pressure control device designed for high-pressure drilling rig operations and other circuits handling water or oil at elevated pressures. Unlike conventional spring-type or diaphragm-type relief valves, the JA-3 operates through a shear mechanism that provides rapid opening, positive closure, and simple reset functionality. The valve features a small pressured piston area, reducing the force required for actuation and improving response sensitivity against pressure spikes in mud pump circuits and high-pressure fluid systems.

Constructed for interchangeability with standard mud pump configurations, the JA-3 valve facilitates straightforward connection to various pump models used in drilling operations. The shear-based actuation principle eliminates the need for spring fatigue management or diaphragm degradation concerns that affect conventional relief valve longevity in cyclic high-pressure service. Standard materials of construction for this valve type typically include forged alloy steel bodies with hardened seat and piston components, though the exact metallurgy, pressure rating, and shear pin calibration range should be confirmed directly with the supplier. The valve is designed for field serviceability, with shear element replacement achievable without specialised tooling or removal from the line in most installations.

Primary applications include drilling mud circulation systems, well control equipment manifolds, and high-pressure hydraulic circuits where overpressure protection and rapid pressure relief are critical to equipment protection and personnel safety. The JA-3 is particularly valued in land drilling operations where pump interchangeability and minimal downtime for valve maintenance directly affect rig efficiency. Buyers should confirm the rated working pressure, end connection specifications (typically API flange or threaded connections), and shear pin pressure settings available for their specific operating envelope. The supplier's location in Dongying positions it within China's established petroleum equipment manufacturing cluster in Shandong Province, with access to Qingdao Port for international shipment.

Dongying Lake Petroleum Technology Co., Ltd operates from Huanghe Road, Dongying 257000, China, situated in Shandong Province's concentrated petroleum technology manufacturing region. The supplier holds both imported supplier tier and harbor trust tier classifications, though the response rate is recorded at 0.00% with zero average response hours, indicating no platform-mediated communication history to date. The company specialises in petroleum technology equipment, with this JA-3 shear relief valve representing its focus on drilling rig pressure control components.

The supplier profile provides no disclosed manufacturing certifications, quality management accreditation, production capacity figures, or export experience details beyond the product description. Buyers should conduct direct due diligence to verify ISO 9001 certification status, API product licence coverage (if applicable to this valve type), and manufacturing scope. Dongying's industrial base supports numerous petroleum equipment manufacturers, providing local supply chain advantages, though buyers must independently assess this supplier's technical capability and quality system maturity before reliance on critical well safety equipment.