Multi-channel manifold JW-300

stainless steel 316Lfor gaschangeover

Overview
Semi Automatic Gas Changeover Manifold System Manual Changeover Manifold Panel Single Stage Automatic Switchover Board. Gas changeover systems are used where a continuous gas supply is required (laboratories, manufacturing, medical facilities). They enable automatic or manual switching between gas sources so the supply continues when one cylinder is empty. The JW-300 series is suitable for high pressure gas cylinders and pressure relief gas supply on both sides, provides automatic changeover to realize continuous gas supply, and includes purge functionality. The maximum input pressure can reach 20.7 MPa (3000 psi). The product is assembled and tested in a clean workshop and is suitable for laboratory and high-purity gas applications such as gas analysis.

Types / Function Overview

• Semi Automatic Gas Changeover Manifold System: Automatically switches from a primary source to a backup when the primary is empty; requires manual action to reset or switch back after replacing the empty source. Useful where occasional manual intervention is acceptable.
• Manual Changeover Manifold Panel: Operator manually switches between gas sources by turning valves or controls. Simpler and lower cost, suited for less critical uses.
• Single Stage Automatic Switchover Board: Fully automatic switching with single-step pressure reduction. Suitable for simpler setups where one-step pressure reduction is acceptable and easy maintenance is desired.

Materials / Construction
Body material: Stainless steel 316L
Diaphragms: Stainless steel 316L
Valve seat options: PU, PTFE, PCTFE / FCTFE (both variants appear in documentation)
Pressure gauge: 2" stainless steel gauge
Inlet/Outlet connections: typical options include 1/4" NPT (F), 1/4" NPT (M), 1/4" tube fitting, 3/8" NPT, 1/2" NPT, 1/2" tube fitting depending on ordering configuration

Design Features

• Pressure regulator designed for special gases
• Equipped with relief pressure valve
• Regulator and piping undergo pressure and leakage testing
• 2" stainless steel pressure gauge for clear readings
• Diaphragm valve knobs include on/off markings
• Supports emptying/purging distribution functions (configurable)

Product Details

• Place of Origin: Guangdong, China (Mainland)
• Brand Name: Jewellok
• Certification: CE
• Model Number: JW-300
• Series: JW-300 Series
• Minimum Order Quantity: 1 – 9 Sets
• Price: Negotiable
• Packaging Details: Export packing
• Supply Ability: 5000 Set/Sets per Week

Ordering / Options
JW-300 Series options include different function choices (with or without emptying/purging, with pressure sensor), multiple outlet/inlet connection types (NPT, tube fittings, welding), body material choices (stainless steel, nickel plated, brass), input pressure ratings (3000 psi, 2200 psi, 1000 psi, etc.), multiple outlet pressure ranges (25, 50, 100, 150, 250 psi) and gas options (N2, O2, H2, Ar, He, CH4, C2H2, Air, etc.).

Caractéristiques / spécifications techniques

• Series / Model: JW-300 Series
• Max Inlet Pressure: 3000 psi and 2200 psi (listed both as 3000, 2200 Psig; also stated as max input pressure 20.7 MPa / 3000 psi)
• Outlet Pressure Range: 0~25, 0~50, 0~100, 0~150, 0~250 psi
• Working Temperature: -40° F ~ +165° F (-40° C ~ +74° C)
• Leakage Rate: 2 x 10^-8 atm.cc/sec He
• Cv: values listed as 0.14 (highlight table) and 0.08 (product specifications); both values appear in the documentation
• Valve Seat Materials: PU, PTFE, PCTFE / FCTFE (variants listed)
• Body Material: Stainless steel 316L
• Diaphragms: Stainless steel 316L
• Pressure Gauge Size: 2" (stainless steel)
• Typical Port / Origin Marking: SHENZHEN (port field shown in spec table)
• Inlet Connection options: 1/4" NPT (F), 1/4" NPT (M), 1/4" tube fitting, 3/8" NPT (F), 3/8" NPT (M), 1/2" NPT (F), 1/2" tube fitting (depending on ordering configuration)
• Outlet Connection options: 1/4" NPT (F), 1/4" tube fitting, 3/8" NPT, 1/2" NPT, others per ordering table
• Available Body Finishes/Materials per order: Stainless (S), Nickel plated (C), Brass (B), others
• Gauge units / display options: MPa, psi, bar (configurable)
• Supported gases: N2 (nitrogen), O2 (oxygen), H2 (hydrogen), Ar (argon), He (helium), CH4 (methane), C2H2 (acetylene), Air, and other specialty gases as specified
• Functions available: emptying/purging distribution, purge without emptying, pressure sensor integration, automatic changeover, semi-automatic changeover, manual changeover