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Series
C2.9511

Pilot-Operated Check Valves

without/with pre-release
version with pipe thread, max. operating pressure 500 bar
Pilot-Operated Check Valves
Downloads
Catalogue sheet
ENDEESFRIT
Operating instructions
Information Series
Description
C 2.9511 Pilot-operated check valves

Pilot-operated check valves are spring-loaded poppet valves with free flow from B to A and blocked flow in the opposite direction that can be "unblocked" by pressurizing the control port Z. The minimum pressure required for unblocking depends on the height of the counter pressure at port A (see diagram).
In the pilot-operated version fist a smaller poppet valve located in the main valve piston is opened.

This offers the following advantages:

  • The control pressure required for opening is considerably lower, and thereby the use of swing clamps with unfavourable surface ratios is possible.
  • pressure reduction is effected relatively softly. That saves all hydraulics components and the noise level sinks.

 

Products (3)
type
pipe-thread type (3)
max. operating pressure [bar]
500 (3)
max. flow rate [l/min]
pre-release
ports A, B
control port Z
G1/4 (3)
Item no. CAD datatypemax. operating pressure [bar]max. flow rate [l/min]pre-release
Item no.
2951417
CAD data
type
pipe-thread type
max. operating pressure [bar]
500
max. flow rate [l/min]
15
pre-release
without
Properties
Item no.
2951421
CAD data
type
pipe-thread type
max. operating pressure [bar]
500
max. flow rate [l/min]
55
pre-release
with
Properties
Item no.
2951501
CAD data
type
pipe-thread type
max. operating pressure [bar]
500
max. flow rate [l/min]
55
pre-release
without
Properties
Item no.
2951417
type
pipe-thread type
max. operating pressure [bar]
500
max. flow rate [l/min]
15
pre-release
without
ports A, B
G1/4
control port Z
G1/4
Item no.
2951421
type
pipe-thread type
max. operating pressure [bar]
500
max. flow rate [l/min]
55
pre-release
with
ports A, B
G1/2
control port Z
G1/4
Item no.
2951501
type
pipe-thread type
max. operating pressure [bar]
500
max. flow rate [l/min]
55
pre-release
without
ports A, B
G1/2
control port Z
G1/4
Application examples
Application example 1

pipe-thread type C2.9511

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Please note: Our CAD data are generally simplified data and primarily reflect the outer contour and connections of the product (see also Terms of use). Please always refer to the relevant catalogue sheet for the exact dimensions with tolerances, in particular the information on mounting holes or attachments such as special clamps.