Salient Features Check Valves
- Screwed Female Ends to IS 554 / BS 21 / ISO 7.
- Single Piece Design, Integral Seat.
- Meant for Vertical Lines Only.
- Permits flow in one direction and shut automatically if the flow reverses.
- Spring Loaded and ‘O’ Ring Type.
- Also available with metal to metal seating.
Test Pressure (Hydrostatic) :
Shell : 25 kg/cm²g (350 psig)
Seat : 16 kg/cm²g (225 psig)
Maximum Working Temperature: 80°C
Materials
| P.No. |
Name of Part |
Material of Construction |
Specification |
Quantity |
| 1 |
Body |
Bronze |
IS 318 Gr. LTB 2 |
1 |
| 2 |
Disc |
Bronze |
IS 318 Gr. LTB 2 |
1 |
| 3 |
‘O’ Ring |
Nitrile Rubber |
IS 5192 – 1 |
1 |
| 4 |
Spring |
Stainless Steel |
Type 304 |
1 |
| 5 |
Disc Nut |
Brass |
– – – |
1 |
| 6 |
Split Pin |
Brass |
– – – |
1 |
Sizes / Dimensions
| Size (Inches) |
Size (mm) |
A ±1.5 |
B |
| 1/2 |
15 |
55 |
1/2″ |
| 3/4 |
20 |
66 |
3/4″ |
| 1 |
25 |
76 |
1″ |
| 1 1/4 |
32 |
80 |
1 1/4″ |
| 1 1/2 |
40 |
85 |
1 1/2″ |
| 2 |
50 |
93 |
2″ |
| 2 1/2 |
65 |
114 |
2 1/2″ |
| 3 |
80 |
118 |
3″ |
| 4 |
100 |
141 |
4″ |
FSC