Alpha Cylinder Safety Valve 1.017765

The Alpha 1.017765 is a 3/4 inch cylinder safety valve supplied as a fitting for Alpha gas boiler installations. It forms part of the safety arrangement on the cylinder side of the appliance, relieving excess pressure before it can cause damage to the cylinder or connected pipework. It is listed by Alpha under part number 1.017765.

• Water weeping or discharging from the valve body or outlet when the system is at normal operating pressure
• Visible scale, corrosion or mineral build-up around the valve seat or spindle
• The valve fails to discharge when pressure in the cylinder rises above its set point
• The valve will not reseat or close fully after it has operated, leaving a continuous drip
• Damp or staining on the pipework or surface beneath the valve outlet

• Confirm the appliance model against the fitment list above before ordering
• Check the existing valve marking and thread size to confirm the 3/4 inch connection
• Inspect the cylinder and surrounding pipework for damage that may have contributed to the fault
• Verify the part number 1.017765 on the existing component or the manufacturer's parts list