4200 Series 316 Stainless Steel Bellows Sealed Valves
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With its wide operating temperature range of −320° to 1200° F [−196° to +649° C], the 4200 Series meets the demands of many critical fluid control conditions. Operating pressure range is 0–2000 psig. Applications include high temperature liquid metals, cryogenic service, and gas analysis. |
Typical Applications
- Critical gas analysis
- High temperature liquid metals
- Cryogenics
- Reactive and toxic fluids
- Sealing cesium or isotope containers
- High vacuum systems
Features & Benefits
- Positive plug return on all valves prevents plug sticking in severe service
- No torque transmitted to bellows – Hex guide mates with hex broach in bonnet
- Secondary o-ring seal in upper bonnet prevents leakage if bellows is damaged
- Non-rising stem prevents galling or seizing of stem threads
- Heavy-duty welded bellows provides long cycle life and assures leak tight service. Long size bellows insures full lift and utilization of full orifi ce area.
- All-welded design for high-temperature and high-pressure service
- Plugs and bellows are replaceable on all gasketed types
- Valves can be base or panel mounted – add prefix “D” to part number for panel mounted
- Variety of materials and modifications
- Special High Tolerance NPT Thread
Technical Data
| Maximum Operating Pressure | Hard seats: 2000 psi @ 600° F [141 kg/cm2 @ 316° C] Soft seats: 500 psi @ 350° F [35 kg/cm2 @ 175° C] |
|---|---|
| High Vacuum | to 10−5 torr |
| Temperature Range | −320° F to +1200° F [−195° C to +632° C] |
| Orifice Size | 0.156 [3.962 mm] |
| Cv Factor | 0.36 (maximum) |
| Internal Volume | 0.18 cubic inches |