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Altitude Valves Diaphragm Actuated

Water
GA diaphragm actuated altitude valves are used to prevent overflow of elevated water storage tanks, standpipes and reservoirs without the need for floats or electronic sensors.  Altitude valves are installed in the fill line and measure the height of the water through a field installed sensing line, closing tight when the maximum level is reached. “Single Acting” type altitude valves control water into the tank, water is drawn out of the tank through a separate pipe. “Double Acting” altitude close when the tank is full but re-open when system head falls below tank head to allow water to flow back into the system.  GA diaphragm actuated altitude valves can be supplied with solenoid shutoff, check and/or pressure sustaining optional functions.  See individual Data Sheets for details.

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General information

Product features and benefits

  • Conforms to AWWA Standard C530
  • NSF-61 Certified for Contact with Drinking Water
  • NSF-372 Certified Lead Free
  • 1¼” to 16” Globe, 1¼” to 10” Angle
  • 3” to 10” Reduced Port Globe
  • NPT to 3”, Class 150 or 300 flanged 1½” to 16”
  • Standard Features
    • Fusion Bond Epoxy Coated
    • Visual Position Indicator
    • Closing Speed Control
    • Wye Strainer
    • Pilot Isolating Valves
    • Inlet Pressure Gauge
    • Tank Level Gauge
    • Sensing Line Flush Valve

Material

  • Body, Cover – Ductile Iron
  • Trim – Stainless Steel
  • Seat – Buna-N Rubber
  •  Diaphragm – Reinforced Buna-N Rubber
  • Cover Fasteners – Stainless Steel

Corrosion protection

  • Fusion Bond Epoxy Coating

Product versions

Basic Double Acting Altitude Valve

Product features and benefits
  • Closes tight when water level reaches maximum
  • Opens when supply head falls 18” to 36” below tank level to allow water to flow  back through valve into supply side
  • Can be supplied with the following additional function:
    • Delayed Opening – holds valve shut until supply head falls adjustable 3 to 20 ft below maximum tank level

Basic Single Acting Altitude Valve

Product features and benefits
  • Closes tight when water level reaches maximum
  • Opens to refill tank when water level falls 18” to 36”
  • Can be supplied with one or both of the following additional functions:
    • Check Feature – prevents reverse flow through valve
    • Delayed Opening – holds valve shut until tank level falls adjustable 3 to 20 ft below maximum

Double Acting Altitude Valve with Solenoid Shutoff

Product features and benefits
  • Closes tight when water level reaches maximum
  • Opens when supply head falls 18” to 36” below tank level to allow water to flow  back through valve into supply side
  • Can be closed or prevented from opening by remote electrical signal
  • Can be supplied with the following additional function:
    • Delayed Opening – holds valve shut until supply head falls adjustable 3 to 20 ft below maximum tank level

Single Acting Altitude Valve with Pressure Sustaining

Product features and benefits
  • Closes tight when water level reaches maximum
  • Opens to refill tank when water level falls 18” to 36”
  • Throttles as necessary to sustain minimum inlet pressure
  • Can be supplied with one or both of the following additional functions:
    • Check Feature – prevents reverse flow through valve
    • Delayed Opening – holds valve shut until tank level falls adjustable 3 to 20 ft below maximum

Single Acting Altitude Valve with Solenoid Shutoff

Product features and benefits
  • Closes tight when water level reaches maximum
  • Opens to refill tank when water level falls 18” to 36”
  • Can be closed or prevented from opening by remote electrical signal
  • Can be supplied with one or both of the following additional functions:
    • Check Feature – prevents reverse flow through valve
    • Delayed Opening – holds valve shut until tank level falls adjustable 3 to 20 ft below maximum
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Address

VAG USA, LLC
9025 Marshall Road
Cranberry Township, PA 16066
United States
+1 724-776-1020 +1 724-776-1254 Write e-mail