Page 708 - CarrLaneCatalog_2019ed-c.pdf

Pressure-Controlled Closing Valves 7250 psi max

• Allows different operating pressures in OPERATION: Adjust downstream pressure
two parts of a fixture using knob on top of valve. The valve shuts
off downstream fluid flow as soon as system
• Can be used on pallet fixtures exceeds the set pressure.
disconnected from a power source,
since no return line is needed MOUNTING: In line. Fittings furnished with
• Allows fine tuning the clamping force valve provide 5/16” JIC 37° flare connections.
of selected components while keeping DESIGN CONSIDERATIONS: After closing,
others constant the oil pressure on the secondary side B is
• Holds reduced pressure to exact setting, not regulated. There can be the following con-
regardless of input pressure sequences:
• Zero-leakage poppet design 1. Pressure drop if there are leakages or if
clamping elements are used which are
not leakage free.
2. Pressure increases if there is an increase
in temperature or if contamination has
gotten in the valve seat and damaged it.
Therefore, it is highly recommended to install
a pressure relief valve (CLR-2952-521-V)
on the secondary side as a safety measure
against pressure increase. By means of a
Symbol pressure gauge the adjusted pressure can be
monitored.
Output
When using this valve in series with other
valves (clamp/unclamp valves, sequence
B
valves, etc.), pressure closing valve must be
Input A closest to clamps. Please contact factory if
pilot operated check valves are to be used on
clamps.

Pressure-
Controlled Pressure-
Pressure-Controlled Closing Relief Pressure Swing Clamps
Closing Valve Valve Valve
Gauge
Reduced
Sequence Pressure
Valve Line
P P
B A
Pressure Work Supports
Line
P < P Example:
A
B
Power Pressure-Controlled Closing Valve allows
Pressure-Relief Valve Source Swing Clamps to clamp a fragile part with
CLR-2952-521-V light, adjustable force, while Work Supports
hold using normal operating pressure.

4.53 MAX Reduced-pressure High Medium Low
2.76
adjustment range
1.97 1.42 A/FLATS (psi) 2900-7250 870-3190 435-1800
Max. operating pressure, input (psi) 7250 7250 7250
1/4 1.42
BSPP A B 1.02 P/A DIA
14 Repeatability (+/- psi) 150 150 150
Max. fluid flow rate (cu. in./min.) 730 730 730
1/4 BSPP 1.73 Part No. CLR-2953-002-V CLR-2953-003-V CLR-2953-001-V
7.28
Carr Lane Roemheld Mfg. Co.
Sales — Phone (314) 647-6200 Fax (314) 647-5736
Engineering — Phone 1-800-827-2526 Web roemheld-usa.com
706 8/18