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SPRING LOADED BACK PRESSURE VALVE
User manual
DAN-20064957
7
Operation parameters
7.1
Control valve normal operation
The Daniel 707 control valves are pressure balanced, single-seated piston operated with
45° body construction. The valves are spring actuated and use pre-loaded spring force to
counter the flowing stream.
Unique design features and unit-built construction ensures positive leak-proof
performance. In addition, the basic valves body and internals are the same throughout the
line, simplifying spare parts inventory and reducing costs.
7.2
Operation overview
The 707 Control Valve relies on spring pre-loads at the back of the piston to inlet flow.
When pressure on bottom side of the piston exceeds the spring pre-loaded force on the
spring side of the piston, the valve opens and begins to flow. As pressure continue to
increase the valve continues to open as more flow is induced across it.
EQUIPMENT DAMAGE
Read the entire recommended procedure for all installation operations and
maintenance procedures before attempting to install or disassemble the valve.
Disassembly of this cylinder assembly is different from previous Daniel Control Valves
and requires strict adherence to the procedures outlined in this manual.
Failure to read and comply with these procedures could result in damage to the
equipment and compromise in the integrity of the operation.
User manual
36
www.Daniel.com
CAUTION
Operation parameters
August 2019
45
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