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Salient Features
* Flanged Ends to BS 10 Table ‘D’.
* Screwed in Bonnet, Integral Seat.
* Permits flow in one direction and shuts automatically if the flow reverses.
* Metal Disc is mushroom shaped with spherical seating surface.
* Meant for Horizontal Lines Only.
* Disc is guided in Body as well as in Bonnet.
* Medium Pattern.
* Also available with metal to metal seating.
Test Pressure (Hydrostatic) :
Shell : 24 kg/cm²g (340 psig)
Seat : 16 kg/cm²g (225 psig)
Maximum Working Temperature : 80°C
Suitable For
Water, Oi
Materials
| P.No. | Name of Part | Material Construction | Specification | Quantity |
| 1 | Body | Bronze | IS 318 Gr. LTB 2 | 1 |
| 2 | Disc | Bronze | IS 318 Gr. LTB 2 | 1 |
| 3 | Bonnet | Bronze | IS 318 Gr. LTB 2 | 1 |
| 4 | ‘O’ Ring | Nitrile Rubber | IS 5192 – 1 | 1 |
Sizes / Dimensions
| Size (Inches) | Size (mm) | A ±1.5 | B ~ |
| 1/2 | 15 | 53 | 32 |
| 3/4 | 20 | 67 | 37 |
| 1 | 25 | 80 | 45 |
| 1 1/4 | 32 | 85 | 51 |
| 1 1/2 | 40 | 91 | 60 |
| 2 | 50 | 106 |
68 |
