The Nabic Series 542 Safety Relief Valve is an extremely versatile relief valve, suitable for use on hot water, steam or air. Although designed primarily for the protection of hot water boilers, its wide range of applicants make it an ideal safety relief valve for stocking as a general purpose safety valve.
The Series 542 is of gunmetal construction, with diaphragm protected working parts and PTFE to metal seating. All wetted parts are manufactured from dezincification resistant materials, approved by the Water Research Centre for use on potable water. Inlet and outlet connections are of equal size, with female threads to BS 21. Sizes from DN 32 upwards are available with flanged inlet connections.
| Technical Data Summary |
| Specification Details |
|
| Body Material |
Gunmetal |
| Maximum Set Pressure |
10.5 bar |
| Maximum Temperature |
195°c |
| Design Features |
|
|
Resilient PTFE Seating Design |
|
Suitable for hot water, steam or air |
|
High degree of seat tightness |
|
Diaphragm protected working parts |
|
Safe manual testing |
|
Easy inspection and cleaning |
|
Pressure setting locked and sealed |
|
Designed and tested to BS 6759 |
| Approvals |
|
|
Capacities certified by AOTC |
|
Approved by Water Regulations Advisory Scheme |
|
UKWFBS Listed |
| Optional Features |
|
| |
Padlock available |