RX 08 HP & UHP Line Valve
Flow capacity 0.5 springless diaphragm.
Key features
- 8 mm seat, Cv 0.5, wetted volume under 1.6 cm3
- 20 or 240 bar, manual or pneumatic
- Reverse seat design for long cycle life
- Burst pressure above 700 bar
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Request a quoteDownload data sheetThe 8 mm seat member of the RX diaphragm line valve range for high purity and ultra high purity gas, with Cv 0.5 and less than 1.6 cm3 of wetted volume. Versions run 20 bar and 240 bar with multiturn or quarter turn handwheels or pneumatic actuation, all helium leak tested to 1 x 10-9 mbar.l/s or better on outboard, inboard and across the seat, assembled in an ISO Class 4 cleanroom, serial numbered, with a burst pressure above 700 bar. Reverse seat design for long cycle life, AISI 316L body to SEMI F20, Phynox diaphragm, PCTFE or polyimide seat, gas wetted finish to SEMI F19 grades, with multi port, panel mount, lockout and position switch options.
Specification
| Orifice | 8 mm seat |
|---|---|
| Maximum Inlet Pressure | 20 or 240 bar |
| Cv | 0.5 |
| Temperature | -40 to +65 C with PCTFE seat, -40 to +150 C with polyimide |
| Body Material | AISI 316L stainless steel to SEMI F20 |
| Seat Material | PCTFE or polyimide |
| Diaphragm | Phynox |
| Technology | diaphragm line valve, multiturn, quarter turn or pneumatic |
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Common questions
- When is the RX 08 the right size rather than the RX 04?
- When the line needs the flow. The RX 08 has an 8 mm seat, Cv 0.5 and under 1.6 cm3 of wetted volume, against 4 mm, Cv 0.2 and under 1.2 cm3 on the RX 04, so it passes about two and a half times the flow at the same pressure drop. Where the line has to carry more flow, the RX 08 is the one to specify.
- What pressure versions does the RX 08 come in?
- 20 bar and 240 bar, each with a multiturn handwheel, a quarter turn handwheel or a pneumatic actuator, and a burst pressure above 700 bar. Every valve is helium leak tested on the outboard, inboard and across the seat paths at 1 x 10-9 mbar.l/s or better, assembled in an ISO Class 4 cleanroom and carries its own serial number.
- What options are available on the RX 08?
- Multi port bodies, panel mounting, a lockout and a position switch, with the seat in PCTFE for minus 40 to plus 65 C, minus 20 C on the pneumatic versions, or polyimide for up to 150 C. The body is AISI 316L to SEMI F20, the diaphragm is Phynox, and the gas wetted finish is to the SEMI F19 grades.
