Single Small Orifice Air Release Valve will be installed at sections of the pipeline where air pockets would be formed.
Remarks:
1.Design according to BS EN 1074-4:2000
2.Drill Thread According to BSP/NPT
3.Test according to EN 12266-1:2012
Working pressure:16kg/cm3
Shell test pressure:25kg/cm3
Seat test pressure:18kg/cm3
4.Media: water, neutral oil
5.External and internal coating:100% fusion-bonded epoxy
6.Material 304, 316 used in bolt, nut and washer can be available by requirements.
DIMENSION:MM
DN | NPS | W | H |
15 | 1/2” | 115 | 137 |
20 | 3/4” | 115 | 137 |
25 | 1” | 115 | 137 |
32 | 1 1/4” | 115 | 137 |
40 | 1 1/2” | 115 | 137 |
50 | 2” | 115 | 137 |
MATERIAL FOR MAIN PARTS
No. | Part Name | Material | Standards | |
1 | Body | Ductile Iron | EN1563-GJS-450-10 | BS2789 |
2 | Float | ABS | ||
3 | Nut | Carbon Steel | EN ISO4032 | BS3692 |
4 | Washer | Carbon Steel | EN ISO7089 | BS4320 |
5 | O-ring | EPDM | EN681-1 | BS2494 |
6 | Cover | Ductile Iron | EN1563-GJS-450-10 | BS2789 |
7 | Hexagon Bolt | Carbon Steel | EN ISO4014 | BS3692 |
8 | Adjusting Screw | Stainless Steel | EN ISO15481 | BS4174 |
9 | Gasket | EPDM | EN681-1 | BS2494 |
10 | Cap | Nylon/Brass | ||
11 | Seat | EPDM | EN681-1 | BS2494 |
12 | Bracket | Nylon | ||
13 | Hinge Pin | Stainless Steel | EN ISO1234 | BS1574 |
The valves shall be of robust construction of double orifices with an integral isolating valve and flanged base for connection to a valve stem that connects the air valve to the main pipeline.
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