4435 & 4436 Zetco Cryogenic 3-Piece Stainless Steel Ball Valve
A full-bore 3-piece investment cast 316 grade stainless steel ball valve with a choice of either female NPT or female BSPT threaded connections. With high quality internal component materials, design and construction, this valve is specifically designed to be used in cryogenic applications requiring safe, reliable performance at extremely low temperatures.

Design Features
- Investment cast body in 316 grade stainless steel
- Designed to ANSI B16.34
- Modified PTFE ball seals for smooth, reliable operation
- Versatile ISO mounting pad with lockable lever handle (refer p. 3)
- Self-adjusting, blow-out proof stem packing to prevent leakage
- Internal pressure relief hole for added safety
- Anti-static device to protect valve against sparks that may ignite
- Unidirectional capability
Production
- Manufactured in Taiwan (R.O.C.) under ISO 9001 QMS
- All valves are pressure tested during production
Technical
- Size range: DN8 (1/4") to DN50 (2")
- Female ANSI B1.20.1 (NPT) threaded connections (Series 4435)
- Female ISO 7/1 Rc (BSPT) threaded connections (Series 4436)
- Flow capacity: Full bore
- Flow control: On/off only, not intended for throttling
- Temperature range: -196°C to 160°C
- Max. pressure: 10,000 kPa (refer to graph)
Options
- Butt weld and socket weld connections available on request
Downloads
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