Cast Iron Big sizes metal seat Gate Valve with by pass (GV-H-16)

Quick Detail：metal seated ductile iron Gate valve with by pass
Design standard: BS5150
Body material: ductile iron GGG50
Wedge: Ductile iron Bronze
Seat ring： Bronze
Nominal diameter: 16″ DN400
Pressure: PN16
End connection: RF. Flange
Face to face: BS5150
Working temperature: -30℃~+200℃.
Test and inspection: API 598.
Gland Gate valve
Product Range Size: 2″-1200″
Connection: Flange ends conform to EN1092-1

Available Body Material: Cast Iron GG25, Ductile iron GGG40, GGG50
Available Wedge Seat: Bronze, stainless steel, EPDM, NBR
Optional Design: EN1074/ EN1711 DIN3352 BS5150
Optional: O S& Y stem
Size Range: 50mm- 1200mm (2″-48″)
Pressure Range: PN6, PN10, PN16
Optional surface color: RAL5002, RAL5015. RAL5005, white or customized.
Optional Operation: Handwheel, extended spindle, stem caps.

1. By pass valve is a protective measure for the main valve to prevent the opening resistance from being too large due to the excessive pressure difference between the front and back of the valve, and the valve is not easy to open, especially in some large port’s diameter or high-pressure piping. Before the high-pressure pipeline is opened, the pressure is relieved through the bypass valve to avoid the sudden influx of high pressure and impact on the pipeline under the valve. Or the pressure difference across the valve is too large and makes the torque is too large. To avoid damage to the valve by torque, open the valve bypass to relief the pressure firstly, then open the main valve.

2. Used as a backup pipeline, the biggest advantage is that when the main valve fails or needs maintenance, it can be opened by bypass valve circulation, and does not affect normal production

Water, seawater, sewage, steam, oil, etc.