Ultra-high-purity gas gas control unit JW-400

Product Details

• Place of Origin: Guangdong, China (Mainland)
• Brand Name: Jewellok
• Certification: CE
• Model Number: JW-400
• Minimum Order Quantity: 1 – 9 Pieces
• Price: Negotiable
• Packaging Details: Each piece with a PP bag first, then put in a small box, outside is in carton.
• Supply Ability: 5000 Piece/Pieces per Week
• Highlight: gas control panel, pressure control panel

Description
A high-purity gas cylinder semi-automatic changeover regulator panel JW-400 provides uninterrupted supply of process gases by switching between cylinders when pressure drops below a preset threshold. It is intended for industrial and laboratory applications where continuous, low-contamination gas delivery is required.

The panel integrates inlet valves, high-precision regulators, gauges and a semi-automatic changeover mechanism that detects cylinder depletion and transfers flow to the standby cylinder with minimal disturbance. Operators can replace empty cylinders without shutting down the downstream system; a manual reset may be required after replacement.

Designed for use with nitrogen, helium, argon and other high-purity gases, the unit minimizes contamination using 316L stainless steel wetted parts and appropriate seats and seals. Typical features include pressure gauges, safety relief valves and optional alarms or indicators for cylinder status.

Specifications (summary)
Material: 316L SS
Maximum Inlet Pressure (general): 3000, 2200, 500 PSI
Alternate Maximum Inlet Pressure (table): 500, 3000 psig
Output/Outlet Pressure ranges: 0-25, 0-50, 0-100, 0-250, 0-500 PSI
Working / Operating Temperature: -23 ~ +74 °C (also listed -40°F to 165°F / -40°C to 74°C)
Applied Gas: Pure Gases, Standard Gases, Corrosive Gases and so on
Bonnet Material: SS316L
Seat materials: PCTFE, PTFE, Vespel
Spring: SS316L
O-ring: Viton
Strainer: 316L (10 mm or µm options)

Technical parameters (from tables)
Maximum Inlet Pressure: 500, 3000 psig
Outlet Pressure Ranges: 0~25, 0~50, 0~100, 0~250, 0~500 psig
Safety test pressure: 1.5 times maximum inlet pressure
Operating Temperature: -40°F to 165°F / -40°C to 74°C
Leakage Rate Against Atmosphere: 2*10-8 atm cc/sec He
Cv value: 0.14

Material of parts (detailed)
Body: 316L
Bonnet: 316L
Diaphragm: 316L
Strainer: 316L (10 mm)
Seat: PCTFE, PTFE, Vespel
Spring: 316L
Plunger valve core: 316L

Application / Series details (selected rows from product table)
Series: JW-400 — suitable for secondary pipeline and controlling gas flow; inlet pressure configurations available across H/M/L options (examples: H:1000 PSI / M:500 PSI / L:300 PSI). Inlet/outlet connection options include various barb and welded fittings and O.D. sizes (examples: 6 mm barb, 1/4" welding, 1/4" O.D., 3/8" O.D., 8 mm, 10 mm, 1/2" O.D.). Typical gases: N2, H2, C2H2, CH4, AR, HE, Air. Regular maintenance and leak checks recommended to ensure purity and reliability.