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Hydac Technology Corporation

Modular Stacking Valve System
Control Modules

L Series Modular Stacking Valve System

The "L" Series is a manifold system made up of modular valve blocks which are stacked together and fixed with tie rods.
 
FEATURES
Truly Modular
Modular design allows a machine manufacturer to offer multiple options on a single machine without having to stock or machine separate manifolds.
Compact
Excellent flow and pressure characteristics in a space-saving package.
High Pressure
Most control modules are rated for 5000 psi.
Time Saving Solutions
Modular design affords simple to complicated circuit solutions, eliminating the time and cost needed to design and machine a manifold or hard-pipe in-line controls.
Wide Array of Control Options
Pressure controls, directional controls and combination modules are offered.
  • Pressure Control Modules
    • Direct acting and hydraulically dampened for smooth, quiet control.
  • Directional Control Modules
    • Solenoid and check valves are of a metal to metal seat design, providing leak-free performance.
    • Solenoid coils are rated for 100% continuous duty.
FUNCTION
The HYDAC "L" Series Modular Stacking Valve System offers a multitude of control modules that are stacked in series and fixed with two tie rods to form an integrated manifold. The manifolds may then be mounted as stand-alone packages, or as "on-board" controls for HYDAC "CA" or "HP" power units.
There are three general types of modules which are used in building a manifold: Base Modules, Control Modules, and End Modules.
The base module can be piped with SAE O-ring ports for remote mounting or flange-mounted to a HYDAC power unit. Control modules include a wide selection of both pressure and solenoid control valves. The end modules cap the assembly and can include other hydraulic accessory components such as pressure switches and accumulators.
Features, such as 100% continuous-duty coils and leak-free solenoid and check valves, make the "L" Series ideal for extended clamping and load holding applications.
 

 
Control Module - Unloading Module is a module that houses a 2 position / 2-way solenoid valve that may be bi-directional with checks, normally open (NO) or normally closed (NC) for pressure unloading to tank. No actuator ports are supplied. Maximum pressure is 5000 PSI. Weight is 1.6 lbs.
+ Y N + Control module for loading pressure to tank through normally closed solenoid valve; manual override installed.
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N		 Manual override
No override - standard
Manual override installed
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W
Y
Z		 Valve Type
Bi-directional with check valves
Normally open
Normally closed
 
Control Module P - On / Off Module is a module that houses a 2 position / 2-way solenoid valve in the pressures line to act as an ON/OFF valve for down stream modules. A normally open or normally closed valve may be selected. No actuator ports are supplied. Maximum pressure is 5000 PSI. Weight is 1.6 lbs.
+ Z N P + Control module for loading pressure to tank through normally closed solenoid valve; manual override installed.
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P		 Type
On / Off Module
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nil
N		 Manual override
No override - standard
Manual override installed
+ +
Y
Z		 Valve Type
Normally open
Normally closed
 
Control Module ER - Lifting / Lowering Module with Pressure Switch uses two solenoid valves to control a single acting actuator or one side of a double-acting actuator. Jogging, or multiple positioning is possible while keeping the actuator isolated from other modules in the circuit. It may be ordered with or without a pressure switch. Port A is SAE-6. Maximum pressure is 5000 PSI. Weight is 3.2 lbs.
+ ER Z N Z N 5 + Control module for lifting / lowering through normally closed solenoid valves; manual overrides installed; pressure switch adjustable to 700 psi.
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5
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8		 Pressure Switch
None
Up to 700 psi
Up to 2900 psi
Up to 5070 psi
Up to 9000 psi
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N		 Manual override - Valve 2
No override - standard
Manual override installed
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Z		 Solenoid Valve 2 Type
Normally closed
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N		 Manual override - Valve 1
No override - standard
Manual override installed
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Z		 Solenoid Valve 1 Type
Normally closed
+ +
ER
E		 Type
Lifting / Lowering Module
Lifting / Lowering Module without check valve
 
Control Module ER - Lifting / Lowering Module with Relief Valve uses two solenoid valves to control a single acting actuator or one side of a double-acting actuator. Jogging, or multiple positioning is possible while keeping the actuator isolated from other modules in the circuit. There is no provision for a pressure switch, however a relief valve is added to limit pressure spikes in overrunning load applications. Port A is SAE-6. Maximum pressure is 5000 PSI. Weight is 3.2 lbs.
+ ER Z Z / 350 V 3000 + Control module for lifting / lowering through normally closed solenoid valves; manual overrides installed; relief valve adjustable to 5000 psi; set to 3000 psi.
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xxxx		 Pre-set Relieving Pressure
Valve will not be set
Cracking pressure in psi
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100 M
200 M
350 M		 Pressure Range
Up to 1450 PSI
Up to 2900 PSI
Up to 5000 PSI
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Z		 Solenoid Valve 2 Type
Normally closed
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Z		 Solenoid Valve 1 Type
Normally closed
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ER
E		 Type
Lifting / Lowering Module
Lifting / Lowering Module without check valve
 
Control Module - Clamping Module includes a 3-way / 2-position valve along with a check valve in the pressure line. It is ideal for single acting clamping applications. Port A is SAE-6. Maximum pressure is 7250 psi. Weight is 1.6 lbs.
+ D N R - 5 + Clamping module with manual override and check valve; pressure switch adjustable to 700 psi
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5
6
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8		 Pressure Switch
None
Up to 700 psi
Up to 2900 psi
Up to 5070 psi
Up to 9000 psi
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R		 Check Valve
No check valve
Check valve built-in
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N		 Manual Override
No override - standard
Manual override installed
+ +
C
D		 Valve Type
Port A open to tank
Port A open to pressure
 
Control Module K - 3-Position, 4-Way Module with All Ports Blocked consists of two 3-way/2-position solenoid valves along with cross piloted check valves combine to function as a double solenoid 4-way/3-position valve with all ports blocked in the center position. Ports A and B are SAE-6. Maximum pressure is 5000 psi. Weight is 4.8 lbs.
+ K N + 3-position 4-way module with manual override; all ports blocked in center position.
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N		 Manual Override
No override - standard
Manual override installed
+ +
K		 Module Type
3-Position, 4-Way Module - all ports blocked
 
Control Module L - 3-Position, 4-Way Module with A to Tank consists of two 3-way/2-position solenoid valves and one pilot-to-open check valve combine to function as a double solenoid 4-way/3-position valve with the A line open to the tank in the center position. Ports A and B are SAE-6. Maximum pressure is 5000 psi. Weight is 4.8 lbs.
+ L N + 3-position 4-way module with manual override; A port open to Tank
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N		 Manual Override
No override - standard
Manual override installed
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L		 Module Type
3-Position, 4-Way Module - Port A to Tank
 
Control Module R - Check Valve Module consists of two check valves installed in the pressure and tank lines respectively to guard against reverse flow in system downstream of the module. Maximum pressure is 5000 psi. Weight is 1.7 lbs.
+ R PT + Check valve module; check valve in P & T lines.
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T
PT		 Check Valve Configuration
Check valve in P-line
Check valve in T-line
Check valve in P and T lines
+ +
R		 Type Module
Check valve
 
Control Module RM - Pressure Reducing / Regulating Module has a pressure reducing valve which will limit downstream pressure. If the module is order without the check valve, the reducing valve will also act as a relief valve - relieving back pressure from overrunning loads. Maximum pressure is 5000 psi. Weight is 1.5 lbs.
+ RM 140V R + Pressure Reducing / Regulating Module; pressure range up to 2000 psi, check valve included.
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R		 Check valve
No check valve
Check valve included
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50V
140V		 Reducing valve
Up to 725 psi
Up to 2000 psi
+ +
RM		 Module Type
Pressure Reducing / Regulating Module
 
Control Module G - Pressure Switch Module houses two pressure switches for dual or high-low electrical signals. Maximum pressure is 7250 psi. Weight is 1.8 lbs.
+ G - 5 5 + Pressure Switch Module; pressure switch 1 adjusts up to 700 psi; pressure switch 2 adjusts up to 700 psi.
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5
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8		 Pressure Switch
Omit
Up to 700 psi
Up to 2900 psi
Up to 5070 psi
Up to 9000 psi
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5
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8		 Pressure Switch
Up to 700 psi
Up to 2900 psi
Up to 5070 psi
Up to 9000 psi
+ +
G		 Module Type
Pressure Switch Module

 
If you are located in Missouri, Kansas, Nebraska, or Illinois, you may contact us at the following telephone and fax numbers with your requests or questions:
St. Louis telephone 314.428.4000 fax 314.428.4097
Kansas City telephone 913.829.5900 fax 913.829.0815
 
For ALL OTHER AREAS Please use the Info Request form for specific product information, pricing or other information. Please include company name, contact name, address, phone number and fax number to ensure a timely response.
 
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Copyright © 2003 Flo-Products Company
Last modified:
Brochure: HHD-L.02/99