Product description
The Mark 57 Series pilot-operated back pressure regulator is designed to accurately control pressure to 90% of its rated flow capacity with only a small deviation from setpoint. The Mark 57 provides accuracy that approaches that of controller-operated valves and should be considered on most critical applications.
Back Pressure Reducing Valve MK57
Size
- 1/2″ – 6″ (DN15 – DN150)
Cv (Kv)
- up to 395 (up to 340)
Diaphragm
- Stainless Steel
Setpoint
- 10 to 185 psi (0,7 to 12,8 bar)
Body Materials
- Ductile Iron, Bronze, Carbon Steel, Stainless Steel, Cast Iron
End Connections
- Threaded, Flanged, Socket Weld, Butt Weld
Features and Benefits
- High turn-down ratios – Up to 50:1
- Versatile Application – Use on steam, air, gas, liquids, or chemicals
- Sliding gate seats provide straight-through flow for reduced turbulence, quiet operation, fast response, and tight shutoff
