Slide valves
Summary



This section contains details on some 26 different slide valve Types. They are paired, with 13 Types being normally closed (N/C), each with a corresponding normally open (N/O) Type. All these slide valves are pilot-operated, three port, two position valves with a spring return action. A major feature in the design of these slide valves is the elimination of the continuous leakage characteristic of conventional lapped-face spool valves. The valves all incorporate special high pressure seals which prevent leakage and all valve slides have a ‘block before bleed’ action. Construction materials comply with NACE Standard MR-01-75. The following table shows some of the key differences in specification as an aid in selecting the appropriate Type. Click on any of the slide pairs in the table below for further information.

Key

A = Manifold mounted with integral pilot connection
B = Manifold mounted with remote pilot connection
C = Special seals to enable the valve to be used
C = as a selector

Type
number
N/CN/O
Working
pressure
(bar)
Pilot
pressure
(bar)
Nominal
flow rate
(l/m)
A B C
3100      3105 690 103 – 690 27      
3101      3106 690 103 – 690 27 x    
3102      3107 690 69 – 207 27 x    
3103      3108 690 103 – 690 27   x  
3104      3109 690 69 – 207 27   x  
3111      3115 690 4.5 – 17.2 27      
3160      3165 690 3.4 – 17.2 27 x    
3163      3167 413 3.4 – 17.2 27 x   x
4100      4105 517 76 – 517 54      
4101      4106 517 76 – 517 54 x    
4102      4107 517 76 – 517 54   x  
4111      4115 690 4.5 – 17.2 54      
4160      4165 690 3.4 – 17.2 54 x    

These slide valves conform to Directive 94/9/EC relating to equipment intended for use in potentially explosive atmospheres and is ATEX (ATmosphere EXplosible) certified.
Marshalsea Hydraulics has been assessed by SGS Société Générale de Surveillance SA and certified as meeting the requirements of ISO 9001:2000 for the design, development, manufacture and servicing of hydraulic pumps, relief valves and intensifiers.