Slide valve Type 4101, 4102 (normally closed) and 4106, 4107 (normally open)



Water/Glycol pumps

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Shutdown, lockout relay,

excess flow, flowline pilot


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Types 3100, 3105

Types 3100.M002, 3105.M002

Types 3101 – 3109

Types 3111, 3115

Types 3111.M002, 3115.M002

Types 3160 – 3167

Types 4100, 4105

Types 4101 – 4107

Types 4111, 4115

Types 4160, 4165

Pilot-operated, three port, two position slide valve with a spring-return action
Can be used locally as quick dump valves
Special high pressure seals prevent leakage
NACE Standard MR-01-75 compliance

Slide valves Type 4101 (normally closed) and 4106 (normally open) are manifold mounted with integral pilot connection, pilot-operated, three port, two position valves with a spring return action. The pilot operator of each valve is capable of withstanding high pressures equal to the main line pressure. This enables the valves to be used locally to actuators, as quick dump valves.

A major feature of the valve design is elimination of the continuous internal leakage which is characteristic of conventional lapped-face spool valves. The valves each incorporate special high pressure seals which prevent leakage and so render the valves suitable for use with many fluid media.

The valve slide (which can be supplied either normally closed or normally open) has a 'block before bleed' action. In a normally closed valve, for example, this means that the tank port is isolated before pressure and service ports are interconnected.

Slide valves Types 4102 (normally closed) and 4107 (normally open) are as described for Types 4101 and 4106, but with a remote (top) pilot connection and without an integral manifold pilot connection.


Predominantly 316 stainess steel and CA104 aluminium bronze with seals of fluoroelastomers and PTFE materials, ensure high corrosion resistance and comply with NACE Standard MR-01-75 (latest revision as applicable).


Operating parameters

Working pressure 517 bar (7,500 psi) max.
Pilot pressure 76 to 517 bar (1,100 to 7,500 psi)
Operating media
– main slide
Mineral oils, water,
water-glycol mixtures
Operating media
– pilot section
Mineral oils, water,
water-glycol mixtures
Recommended filtration 25 micron
Connections 1/4"NPT F all ports
Flow rate, nominal 54 litres/min
(12 imp galls/min)
Working temperature –20°C to + 130°C

Port assignments

Port Valves 4101/2 Valves 4106/7
Port 1(A) 4101 – integral pilot 4106 – integral pilot
Port 1(B) 4102/4 – remote pilot 4107/9 – remote pilot
Port 3 Service Service
Port 4 Supply Tank
Port 5 Tank Supply

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