Interface Specifications: 1/2-14NPT, 3/8-18NPT, 1/4-18NPT, non-standard customization accepted

Product Type: Vented Cap Body Grease Fittings

Application Scope: Lubrication of ball valves, gate valves, and wellhead equipment

Body Material: Stainless Steel 316, 304; non-standard customization accepted

Spring Material: INCONEL X-750

Performance Specifications:

• High water pressure test: 35–135 MPa for 2 minutes

• Air pressure test: 0.6–0.8 MPa for 2 minutes

Working Medium: Petroleum, natural gas, water

Product Structure: Hard-sealed ball valve

Place of Origin: Suzhou, China

Brand: AJL

Ball Material: YG6 tungsten carbide alloy

Operating Pressure: ≤ 10,000 PSI

Operating Temperature: -50°C to 200°C

Product Introduction

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Brief Description

AJL Vented Cap Grease Valve (hard-seal ball structure) is designed for high-pressure lubrication and sealing maintenance of ball valves, gate valves and wellhead equipment in oil, gas and water treatment industries. It features 316/304SS body, INCONEL X‑750 spring, YG6 tungsten carbide ball, working pressure up to 10000 PSI, operating temperature -50℃ to 200℃. Standard connections: 1/2-14NPT, 3/8-18NPT, 1/4-18NPT. Customizable, positive flow structure available for efficient and reliable lubrication.

Detailed Description

AJL Vented Cap Grease Valve (hard-seal ball type) is a high-pressure lubrication fitting specially designed for the oil, natural gas and water treatment industries. It is widely used for lubrication and sealing of ball valves, gate valves and wellhead equipment.

Key Advantages

High-Performance Materials

Body: 316SS / 304SS stainless steel. Spring: INCONEL X-750. Ball: YG6 tungsten carbide alloy. Excellent corrosion resistance and wear resistance, stable in temperatures from -50℃ to 200℃.

High Pressure & Stable Sealing

Hard-seal ball structure, rated working pressure up to 10000 PSI (68.9MPa). Passed hydrostatic test (35–135MPa / 2min) and air pressure test (0.6–0.8MPa / 2min), ensuring zero leakage under severe conditions.

Optimized Structure

Vented cap design prevents impurities from entering the grease passage. Positive flow structure improves grease injection efficiency and flow performance.

Wide Compatibility

Standard NPT connections include 1/2-14NPT, 3/8-18NPT, 1/4-18NPT. Non-standard customization is available to match various equipment requirements.

Applications

Widely used in oil extraction, natural gas transmission, water treatment and other industries for lubrication and maintenance of key valves and wellhead equipment, ensuring long-term stable operation under harsh working conditions.

Brand & Origin

AJL Brand, manufactured in Suzhou, China. With professional machining and strict quality inspection, we provide reliable valve accessories for global oil & gas and water treatment industries.

Keywords

Grease valve, vented cap grease valve, high pressure grease valve, hard seal grease valve, wellhead grease valve, oil and gas grease valve, stainless steel grease valve, AJL grease valve, NPT grease valve, positive flow grease valve