Function: Injects high-pressure grease into lubrication ports of 1502 valves and unions to protect against abrasion from sand, mud, or fracturing fluids.

⚙️ Typical Technical Features

(Values may vary by manufacturer but are standard for this equipment type)

• Working pressure: up to 10,000–15,000 psi (ideal for 1502 connections).
• Aluminum or steel cylinder with anodized coating to resist corrosion in saltwater or chemical environments.
• High-pressure gauge: Allows real-time monitoring of injection pressure.
• High-pressure hose (often certified for 15,000 psi with steel mesh) with Hammer Union 1502 connection.
• Manual screw and lever actuation: T-screw allows preloading grease, and lever generates pressure for pumping.

✅ Advantages for 1502 Valves

• Field maintenance: Lubricates fracturing valves, manifolds, and high-pressure lines without disassembly.
• Seal protection: Prevents high-pressure fluid leaks and reduces internal friction.
• Portability: Lightweight and robust for use on platforms, oilfields, and hydraulic fracturing wells.

🛠️ Operation Recommendations

• Suitable grease: Use high-pressure lithium-based grease or as specified by the valve manufacturer (often “valve sealant” or “grease 1502”).
• Purging: Before injecting, purge air from the cylinder to ensure continuous flow.
• Secure connection: Verify the Hammer 1502 union is perfectly coupled and the hose undamaged.
• Pressure monitoring: Do not exceed the valve or pump’s nominal pressure.

🏭 Industry Applications

• Oil & Gas: Maintenance of fracturing valves, wellheads, and blowout preventers (BOP).
• High-pressure services: Cementing, acidizing, and hydraulic fracturing.

In summary, the grease gun in the image is a high-pressure manual pump for injecting grease into 1502 valves, essential for fracturing operations and well control where pressures are extremely high and preventive maintenance is critical.