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The NABIC Fig 503 Three Way Vent Cock has been designed for use on vented hot water systems, to ensure there is a permanent connection from the boiler or calorifier to atmosphere.
This 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.
Medium: Hot water
Size Range: DN20 - DN65
Pressure: 7 bar
Temperature: -20 to 93°C
Female end connections BSP to BS EN 10226-1.: Rp 3/4", Rp 1", Rp 1 1/4", Rp 1 1/2", Rp 2", Rp 2 1/2".
All valves are 100% production tested.
|ITEM NO.||PART NAME||MATERIAL|
|3||Hex Head Screw||Brass|
|5||Gland Nut||BS EN 12164:1998 CW609N|
|6||Gland Packing||Non ASB Graphite|
|7||Gland Ring||BS EN 12164:1998 CW609N|
|8||Spindle||BS EN 12164:1998 CW602N|
|9||'O' Ring||Rubber Nitrile|
|10||Head||BS EN 1982:1999 CB491K|
|11||Body||BS EN 1982:1999 CB491K|
|12||'O' Ring||Rubber Nitrile|
|13||Retaining Plate||Stainless Steel, BS 3146 ANC 4BFC|
|14||Valve Disc||BS EN 12164:1998 CW602N|
|15||Seat Insert||Virgin PTFE|
|16||'O' Ring||Rubber Nitrile|
|17||Locknut||BS EN 12164:1998 CW602N|
Dimensions & Weights
|SIZE DN||Rp BSP||A (mm)||B (mm)||C (mm)|
To order these products please call us on +44 (0)1462 443 278.
Free delivery on orders over £400.
We had an existing NABIC Fig. 500 safety valve installed in our steam boiler factory which needed replacing. The valve had started to leak due to its old age.
I had no hesitation in purchasing another as it’s been a great product. I was very happy with the service of the website, as well as the prices. The fact the valves come with the necessary certifications is also great.
Wayne Barnes- Engineering Co-ordinator, Newlywed Foods