- Home
- Companies
- Singer, a Mueller Brand
- Products
- Singer Valve - Model 106/206-HC - ...
Singer Valve - Model 106/206-HC -Hydraulic Check Valves
The 106-HC and 206-HC hydraulic check valves are based on the 106-PG or 206-PG main valve. The valve functions as a two position valve - either fully open or fully closed. The HC allows one way flow only. Under normal forward flow, the valve opens as the higher inlet pressure lifts the inner valve assembly and the fluid in the upper chamber is discharged to the lower pressure, downstream side of the valve.
When pressure is reversed, the now higher downstream pressure is applied to the upper operating chamber as flow reversal occurs. The diaphragm / inner valve assembly moves down and the valve closes tightly.
- Drip-tight seat
- Independently adjustable opening and closing speed controls
Primary use as a simple, effective way to start and stop pumps without surges. No electrical supply or interconnections required. Power failure shutdown is the same as normal operation. Best used when the pump is electric motor driven and has positive suction head. A system relief valve is recommended for sizes 6 in / 150 mm and larger or when velocities exceed 6 ft/s / 2 m/s.
- Main Valve 106-PG or 206-PG - “Flow Over Seat”
- Closing Speed Control
- Opening Speed Control
- Swing Check Valve - opening
- Swing Check Valve - closing
The standard valve is normally installed in a horizontal pipeline with the stem oriented vertically up. Confirm other orientations before ordering.
Standard materials for pilot system components are:
- ASTM B-62 bronze or ASTM B-16 brass
- AISI 303 / 316 stainless steel trim