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GA Figure 4900 Pressure Reducing & Check Valve, Flanged, Piston Operated
Brand: GA IndustriesVAG GA Industries Figures 4900-D and 4900-U self-contained, pilot-operated, differential piston actuated pressure reducing valves reduce a higher, fluctuating inlet pressure to a lower, steady downstream pressure regardless of variations in demand.
The main valve incorporates a 'stop-check feature' that prevents reverse flow in the event inlet pressure falls below outlet pressure.
The valve's unique V-port trim provides a semi-linear flow characteristic for excellent control during periods of minimum demand plus full port capacity to handle peak demand such as fire flow.
Features- Heavy duty cast iron body with lead-free bronze internals for long term dependable service
- V-port trim provides excellent low flow control plus full port capacity
- Stop-check closes upon pressure reversal, independent of pilot controls
- Standard visual position indicator
- Pilot system standard with closing speed needle valve, wye strainer and pilot isolating valves
Specifications
Brand
Body
- Cast Iron, ASTM A126 Class B
Cover
- Steel, ASTM A36
Internal Trim
- Lead-free Bronze
Renewable Seat
- Buna-N
Internal Fasteners
- Stainless Steel
External Fasteners
- Steel, A307, Zinc-Plated
Pilot System
- Lead Free Brass, Bronze or Copper