Fig 542F

Safety Relief Valve

From £440.46 Ex Vat
Pressure Equipment Directive - PED 2014/68/EUWRAS
5 Year Warranty

The NABIC Fig 542F is an extremely versatile flanged valve and although designed primarily for the protection of hot water boilers, its wide range of applications make it an ideal general purpose safety valve.

All wetted parts are manufactured from dezincification resistance materials. Designed and tested to BS EN ISO 4126 -1.

  • Resilient PTFE seating design
  • Easy inspection and cleaning
  • High discharge capacity
  • WRAS Approved:
    • DN20 to DN25 – 1 bar and above
    • DN32 to DN65 – 0.4 bar and above


Fig 542F
Safety Relief Valve
-20 to 195°C
Size Range
DN32 - DN80
0.3 - 10.5 bar
Hot water, steam, compressed air and inert gasses, Co2 (to 20°C), ethylene glycol, potable water
Flanged inlet & screwed outlet
Buy Online

Due to difficult market conditions our delivery time is currently four working days from placing your order, although we will endeavour to deliver prior if possible.

  • Customers can only order up to 5 of any one product line. For larger orders please call us on 01462 443 278
  • Please note: if ordering a stock product with a longer lead time product (e.g. 7 to 10 days or 3 to 4 weeks) they will be sent as a combined shipment when ready, unless purchased as separate orders.
  • Online ordering is only available in the UK and Northern Ireland

View Delivery, Returns & Refund Details

Image of Fig 542F Safety Relief ValveFig 542F Safety Relief Valve
Free Delivery*
Order over £400

Online ordering for Great Britain & Northern Ireland only

Test Certificate

Test Certificates are included free of charge for this product, and available to download once you have received your serial number.

Select Your Product
Part Number Size Ex VAT Status More
DN32 £440.46 7-10 Days
1.1/4" Flanged Inlet x 1.1/4" BSPP Female Outlet to BS21 - PTFE to Metal Seat
DN40 £587.14 7-10 Days
1.1/2" Flanged Inlet x 1.1/2" BSPP Female Outlet to BS21 - PTFE to Metal Seat
DN50 £760.14 7-10 Days
2" Flanged Inlet x 2" BSPP Female Outlet to BS21 - PTFE to Metal Seat
DN65 £1,051.90 7-10 Days
1.1/2" Flanged Inlet x 2.1/2" BSPP Female Outlet to BS21 - PTFE to Metal Seat
DN80 £1,471.14 7-10 Days
3" Flanged Inlet x 3" BSPP Female Outlet to BS21 - PTFE to Metal Seat

Please type your required set pressure from 0.3 to 10.5. Pressure settings can be in 0.1 increments.
Please check set pressure charts on Discharge Capabilities section.