The Groz Heavy-Duty Grease Control Valve is designed to control the flow of grease from high-pressure grease pumps.  Constructed with a robust steel body and a replaceable hardened ball seat, these valves ensure long-term reliability. The steel pistol handle with an extra-strong compression spring, guarantees optimal control even with an increase in pressure. The grease control valve develops pressure upto 7500 PSI (517 Bar), enabling greasing especially in high pressure grease applications.  Each unit comes complete with a 6" (150 mm) steel extension and heavy-duty coupler. The Z swivel makes it easier and more comfortable to use the Control Valve especially in difficult to reach fittings