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Fig 55N Test Valve

The NABIC Fig 55N Test Valve allows the use of a single common vent pipe and permits continued operation of the system whilst maintenance is carried out on an individual unit.

It is a robust gunmetal stop valve, with stainless steel needle type valve and seat. A dust cap protects the test gauge connection.

  • Acts as an air vent, to facilitate draining and filling of the boiler
  • Protective cap for test gauge connection
Product Features +

Medium: Hot water, steam

Pressure: 17.5 bar

Material: Gunmetal

Temperature: -20 to 260°C

Connection: Male boiler connection. female gauge connection.

Pipe Connections

Boiler connection R 1/2" BSP male. Gauge connection Rp 3/8" BSP female. To BS EN 10226-1.


All valves are 100% production tested.


1 Body Gunmetal


Downloads +
Buy Online +

Fig 55N Test Valve

To order these products please call us on +44 (0)1462 443 278. 

Free delivery on orders over £400.

Part Number Size Ex Vat Stock Status More
£ 1,333.77 Call us +
G 1/2" Boiler Connection and G 3/8" Gauge Connection to BS EN ISO 228-1 - Stainless Steel Seat

What our customers say

The reason I went to NABIC was because we have to meet certain water regulations. After a chat with Northumbrian Water, they suggested looking into NABIC products as they are WRAS approved and suitable to use on all potable water applications.

I went direct and bought 4 pipe interrupters with next day delivery, which have been installed in our on-site laboratory. My user experience was great and I liked the fact that site has all the necessary specifications and prices easily to hand.

Peter Bauckham - Managing Director, Argos Inspection

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