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Series 63 Constant-Differential Relay
Brand: Siemens AGSeries 63 Constant-Differential Relays are used in conjunction with an external needle valve to provide constant volume flow rates of liquids or gases over a continuously adjustable range.
Features- Versatile and design accommodates liquids or gases and wide range of OEM needs
- Powder coating provides improved corrosion resistance
Specifications
Brand
Ambient Temperature
- Model 63BU, 63BUL, 63BD & 63BDL: -40° to 180° F (-40° to 82° C)
- Model 63SU, 3SUL, 63SD & 63SDL: -40° to 250° F (-40° to 121° C)
Body Material
- Brass
- 316 Stainless Steel
Material of Construction
- Valve Plunger & Seat: 303 Stainless Steel, 316 Stainless Steel
- Plunger Spring: 316 Stainless Steel, Phos. Br.
- Disphragm: Neoprene, Kynar
- Differential Spring: 18-8 Stainless Steel, 316 Stainless Steel
Supply Pressure
- 50 to 500 psig
Range Limit
- Model 63BU & 63SU: 0.01 to 1.1 scfm @ 20 psig Supply
- Model 63BUL & 63SUL: 13 to 2,800 sccm @ 20 psig Supply
