Spare Parts

Sl.No. Description Qty.
1 Plug 1
2 Bonded Seal 1
3 Pilot Piston 1
4 Cap 1
5 Spool 1
6 Body 1
7 Socket Head Plug 2
8 Spring Casing 1
9 Cap Screw 8
* 10 O' Ring 1
11 Spring Pad 1
Sl.No. Description Qty.
12 Check Nut 1
13 Hex Set Screw 1
14 Plug (Socket Head) 1
15 Choke 2
* 16 O' Ring 5
* 17 O' Ring 2
18 Dowel Pin 1
* 19 O' Ring 2
20 Grub Screw 1
21 Spring 1

Note : * Recommended Spares
While ordering the spares give complete details of Model Code punched on the valve body.

 

Maintenance Manual

MODEL : DPC

Operation and Maintenance Instructions :

Direct acting pressure control valves are quite reliable and hence require very little attention from the user provided the valve is operated within the specified conditions. However following guide lines be followed while storage, operation, commissioning and maintenance.

Storage :

For storage see that the valve is properly covered and well lubricated. This will prevent the ingress of dust and dirt in working mechanism of the valve and it will be easy to install the same.

Operation :

Pressure control valves are direct operated hydraulically cushioned valves. These are used to control sequencing, unloading or back pressure of oil flow in a hydraulic system. When the pressure at port A exceeds the set pressure the spool moves against the spring thereby connecting port A and port B. The control can be initiated by sensing pressure rise directly from its port A (internally) or remote pressure control port X. The valves with auxiliary pilot pressure port P (selected models only) can be actuated by lower remote pressure than that is required at normal remote pressure control port.

Commissioning :

The valve is of subplate type.

Inlet line is to be connected to port A and port B to the system line. A dowel pin is provided to prevent the valve from being wrongly mounted.

See that proper size O’ rings are used.

Correct tightening torque is to be applied to the mounting bolts as mentioned in the data sheet.

Maintenance :

The Pressure control valve does not need any major attention, but to ensure its efficient working and long life it is necessary that following points be kept in mind.

The oil must be of prime quality and clean as per ISO code 16/13.

The oil must be periodically changed. Use of contaminated oil may cause faster spool wear leading to excess leakage and reduced life.

The O’ rings at the port opening must be periodically checked.

The oil temperature be within specified range i.e. -20 C to +70 C. High temperature may result in increased leakage and may also cause spool sticking.

 

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Subject to revision.

Regd. office & Works :
78-80, Machhe Industrial Estate, Machhe, Belgaum - 590 014. Karnataka, INDIA. 
Phone :
+91-0831-2411001.  Fax : +91-0831-2411002 ,  
E-mail :
 
polyhydron@vsnl.com ,  Website :  www.polyhydron.com

 

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Updated on February 04, 2015 03:05 pm .