Type 14550 – 4-way directional control valve



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DIRECTIONAL CONTROL VALVES

Type 14550

Type 14670

Four cam-operated modules – positive detented selections at 45° intervals.
Dynamically biased towards closing – seal becomes tighter as pressure rises. .
Suitable for a wide range of fluids – up to 690 bar (10,000 psi).
Torque to operate handle is light throughout the pressure range.
Made with 316 stainless steel.

Comprising four cam-operated modules, each containing a partially balanced plunger which is unseated when the handle is operated. In the closed position, the plunger makes a leak-free seal with the seat. Being dynamically biased towards closing, the seal becomes tighter as pressure rises.

A module can be readily withdrawn from the base of the valve body for servicing or renewing the seat or seals. Total handle movement of 90° gives positive detented selections at 45° intervals.

The valve is suitable for use with a wide range of fluids and is designed for working pressures of up to 10,000 psi. Torque required to operate the handle remains light throughout the pressure range.

Subsea versions are available – position selected by ROV – springs to centre if not positioned otherwise.


 

Product numbers for various options of spigot or handle for each of the IDs defined on the large table below are as follows:


ID Spigot 3/8"NPT Handle 3/8"NPT Spigot 3/8"BSP Handle 3/8"BSP
A 14550–01 14550–08 14550–15 14550–19
B 14550–02 14550–09 14550–16 14550–20
C 14550–03 14550–13 14550–17 14550–21
D 14550–05 14550–10 14550–24 14550–23
E 14550–06 14550–11 14550–25 14550–27

Also available with 1/2"NPT F and with 3/8"MP Butech ports.


ID Symbol Cam no. Handle
position 1
Handle
centre
Handle
position 2
A  01 Spindle A closed
Spindle B open
Spindle C open
Spindle D closed
Port 3 to pressure
Port 2 to tank
Spindle A closed
Spindle B closed
Spindle C closed
Spindle D closed
 
All ports blocked
Spindle A open
Spindle B closed
Spindle C closed
Spindle D open
Port 3 to tank
Port 2 to pressure
B  02 Spindle A open
Spindle B closed
Spindle C closed
Spindle D open
Port 3 to tank
Port 2 to pressure
Spindle A closed
Spindle B closed
Spindle C open
Spindle D open
Port 1 blocked
Ports 2 & 3 to tank
Spindle A closed
Spindle B open
Spindle C open
Spindle D closed
Port 3 to pressure
Port 2 to tank
C  03 Spindle A open
Spindle B closed
Spindle C closed
Spindle D open
Port 3 to tank
Port 2 to pressure
Spindle A closed
Spindle B closed
Spindle C closed
Spindle D open
Port 1 & 2 blocked
Port 3 to tank
Spindle A closed
Spindle B open
Spindle C open
Spindle D closed
Port 3 to pressure
Port 2 to tank
D  02 Spindle A open
Spindle B closed
Spindle C closed
Spindle D open
Port 3 to tank
Port 2 to pressure
Not used
Spindle A closed
Spindle B open
Spindle C open
Spindle D closed
Port 3 to pressure
Port 2 to tank
E  04 Spindle A closed
Spindle B open
Spindle C open
Spindle D closed
Port 3 to pressure
Port 2 to tank
Spindle A open
Spindle B closed
Spindle C open
Spindle D closed
Ports 1 & 2 to tank
Port 3 blocked
Spindle A open
Spindle B closed
Spindle C closed
Spindle D open
Port 3 to tank
Port 2 to pressure

Drawing


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