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635 Series AutoSwitch HF

Enclosed switchover with brass internals for high flow industrial gas applications
6353000-01-580 shown

The 635 Series AutoSwitch HF assures an uninterrupted supply of process gas from the primary and reserve banks. The ultra-high flow system maintains a constant delivery pressure via the integral line regulation. The CONCOA 635 Series pressure differential switchover may be used with one or more cylinders per side and is intended for use in industrial, non-corrosive gas applications. For centralized gas distribution, the 635 switchover can be configured with manifold connections for use with the CONCOA 628 Series maniflex manifold.

  • Automatic pressure differential ensures fail-safe operation
  • Balanced main valve supports high flow capacity
  • Integral line regulator maintains stable line pressure during a changeover
  • User-friendly priority valve provides easy one-knob switch of cylinder priority
  • Max inlet pressure: 3000 PSIG (210 BAR)
  • Temperature range: -40°F to 140°F (-40°C to 60°C)
  • Max flow: 6000 SCFH (2830 LPM)
  • Inlet/Outlet connections: 1/2 in FNPT
  • Weight: 54 lbs (25 kg)
  • Priority valve and line regulator bodies: Brass barstock
  • Diaphragms: Fabric-reinforced chloroprene
  • Enclosure: Powder-coated steel
  • Tubing and fittings: 316 stainless steel, brass, and copper
  • Internal seals: PTFE and chloroprene
  • Seats: EPDM, PCTFE, and FKM
  • Conformances: Cleanliness meets or exceeds CGA G-4.1; ANSI/ASME B40.1; CRN OF11809.2
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ID Number
635 Series AutoSwitch HF Catalog Page
635/636 Series AutoSwitch Systems Installation and Operation
CRN File OF11809

WARNING: This product can expose you to chemicals including Lead, Chromium, Nickel, and 1-3 Butadiene, which are known to the state of California to cause cancer, birth defects, or other reproductive harm. And, this product can expose you to chemicals including Bisphenol A (BPA) which is known to the State of California to cause female reproductive harm. For more information go to www.