Description
Mueller Steam Specialty™ SURE CHECK™ Check Valve, Dual Disc Wafer, Series: 71 Series, 30 in Nominal, 150 psi Pressure, 125 lb Pressure Class, -20 to 150 deg F, 12 in Inlet to Outlet Length, Cast Iron Body, 316 Stainless Steel/Buna-N Trim, 34-3/4 in H Dimensions
Features:
- Compact design with short face-to-face dimensions for minimum space requirements
- Dual shaft design allows interchangeability of shafts
- Torsion springs close the valve prior to flow reversal
- Torsion springs exert a lifting motion on the discs, enabling the center heel to open first, this prevents excessive wear of the seat inch this area and provides a consistent wear pattern and long sealing capability
- Downstream stop shaft stabilizes the discs at high flow rates and prevents them from striking each other, which can cause premature wear, stress on the shaft and chattering
- Opens at 0.5 psi differential
Applications:
Designed for Liquids and Gases where Flow Reversal can Cause Surge and Water Hammer
Standards/Approval:
- ASTM A126-B
- ANSI and API 598
- Buy American Act
- US Green Building Council
Warranty:
1 Year
