Dwyer Valves & Connectors
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Valves-Connectors

Brand: Dwyer Instruments, LLC
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Instrument valves for permanent installation. They mount in part A-316, A-317, type C Manometer connections or Magnehelic® Gauge and connect to metal tubing or 1/8" pipe.

Gauge Connectors for Manometers. Molded nylon construction, threaded 0.786 x 27 N.S., with O-ring seal.

  • A-310A: 3-way vent valve, plastic, 1/8˝ NPT to 1/4˝ metal tubing. Positions are: (1) Line: Gauge connected to pressure source. (2) Off: Both gauge and connection to pressure source closed. (3) Vent: Gauge vented to atmosphere and connection to pressure source closed. 80 psi rating. Replaces former model A310 (brass) 
  • A-310B: Same as A-310A but with 10 psi rating 
  • A-311: Shut off valve, brass, 1/8˝ NPT to 1/8˝ NPT 
  • A-312: Shut off valve, brass, 1/8˝ NPT to 1/4˝ metal tubing 

  • A-5001-1: PVC 1/8˝ hose barb inlet x 1/8˝ hose barb outlet x 1/8˝ hose barb outlet (125 psi maximum) 
  • A-5002-2: PVC 1/4˝ hose barb inlet x 1/4˝ hose barb outlet x 1/4˝ hose barb outlet (125 psi maximum) 
  • A-5003-3: PVC 1/8˝ female NPT inlet x 1/8˝ female NPT outlet x 1/8˝ female NPT outlet (125 psi maximum) 
  • A-5003-5: PVC 1/8˝ male NPT inlet x 1/8˝ female NPT outlet x 1/8˝ female NPT outlet (125 psi maximum) 
  • A-5004-4: PVC 1/4˝ female NPT inlet x 1/4˝ female NPT outlet x 1/4˝ female NPT outlet (125 psi maximum) 
  • A-5004-6: PVC 1/4˝ male NPT inlet x 1/4˝ female NPT outlet x 1/4˝ female NPT outlet (125 psi maximum) 
  • A-5005-3: PVC 1/8˝ female NPT inlet x 1/8˝ male NPT outlet x 1/8˝ male NPT outlet (125 psi maximum) 
  • A-5006-4: PVC 1/4˝ female NPT inlet x 1/4˝ male NPT outlet x 1/4˝ male NPT outlet (125 psi maximum)

  • A-355: Porting valve, acrylic plastic, 1/8˝ NPT inserts. Used for convenient indication of pressure at two points with a single gauge 
  • A-365: Dual porting valve, acrylic plastic, 1/8˝ NPT fittings. For monitoring three pressures, two at a time, with one gauge 
  • A-315: Gauge connector, shut off type, for 3/16˝ rubber tubing
  • A-316: Gauge connector, bushing, 1/8˝ pipe thread opening 
  • A-317: Gauge connector, 1/8˝ pipe thread opening, less OD thd., for slip fit in 3/4˝ dia. opening in 250 series A.F. gauges 
  • A-318: Gauge connector 1/4˝ pipe thread opening
  • A-319: Flexible red PVC connector, 3/16˝ ID rubber tubing to 1/4˝ ID plastic tube for 1221,1222 and 1227 manometers 
  • A-321: Brass safety relief valve protects Magnehelic® or Photohelic® gauge against over pressure due to regulator failure etc. Opens at 10 psi. Mounts in tee fitting in sensing line or in unused gauge port with addition of A-349 reducer. 1/4˝ male NPT (Use two for D.P. application) 
  • A-322: Gauge connector for 1/4˝ tubing. Slip fits in 3/4˝ opening in 250 series A.F. gauges (compression nut and ferrule not included 

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Specifications

Brand

Materials of Construction

  • Acrylic Plastic
  • Brass: Shut Off Valve A-311, A-312
  • Nylon

NPT Inlet

  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female
  • 1/8” NPT Male

NPT Outlet

  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female
  • 1/8” NPT Male

Pipe Connection

  • 1/4” Pipe (DN 8)
  • 1/8” Pipe (DN 6)

Process Connection Material

  • PVC

Supply Pressure - Maximum

  • psi: 125 (kPa: 862, bar: 8.62)

Tube Connection

  • 1/4” Tube
  • 3/16” Tube

Documentation

Catalogs

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