A T-handle (butterfly-style) operated brass ball valve supplied by R.K. Instruments & Controls for manually isolating gas lines and gas trains. The nickel-plated brass (CW617N) body houses a chrome-plated brass ball on a PTFE seat, sealed with NBR and Viton® O-rings, and turns via a varnished aluminium T-handle. Female BSP threaded both ends, available across the 1/4" to 1" (DN8 to DN25) size range — see the size, gas pressure rating and materials-of-construction tables below for the exact specification at each size.
| Size | Gas Working Pressure |
|---|---|
| 1/4" (DN 8) | 5 bar / 72.5 psi |
| 3/8" (DN 10) | 5 bar / 72.5 psi |
| 1/2" (DN 15) | 5 bar / 72.5 psi |
| 3/4" (DN 20) | 5 bar / 72.5 psi |
| 1" (DN 25) | 5 bar / 72.5 psi |
| Pos. | Description | N. | Material |
|---|---|---|---|
| 1 | Female end adapter | 1 | Nickel-plated brass CW617N |
| 2 | Seat | 2 | PTFE |
| 3 | Ball | 1 | Chrome-plated brass CW614N (1/4"–3/8") · CW617N (1/2"–1") |
| 4 | Stem | 1 | Brass CW614N |
| 5 | O-ring | 1 | NBR |
| 6 | O-ring | 1 | Viton® |
| 7 | Body | 1 | Nickel-plated brass CW617N |
| 8 | T handle | 1 | Varnished aluminium |
| 9 | Screw | 1 | Zinc-plated steel C4C |
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