// Catalogue

Modular Valve Systems for Station-by-Station Air and Hydraulic Valve Stacks

Modular valve systems build a valve assembly one station at a time, so you can add, swap or rearrange valves without replacing the whole base. TSA Hydraulics Engineering supplies them within the Pneumatic Valves family of our Valves range, with CETOP stack valves for hydraulics too.

The machine you commission today is rarely the one running five years on. New cylinders get added, a station changes function, a zone needs lower pressure. A modular system grows with those changes instead of being scrapped. Tell us the series, the station type and what you want to add or replace, and we will match genuine modules or equivalents.

// Buying guide

How Modular Systems Differ

A fixed manifold has a set number of stations machined into one block. A modular system is made of separate sub-bases that clamp or tie-rod together between two end plates. That means you can:

Add stations when the machine grows.
Mix valve sizes on one assembly.
Fit pressure zones and separate exhausts between groups.
Replace a single damaged sub-base instead of the whole manifold.

Many modular systems also form the base of a networked valve island.

Pneumatic Modular Systems

Common building blocks include:

Sub-bases: one or two stations each, with supply, exhaust and work ports.
Valves: 5/2, 5/3 and 3/2 functions that plug onto each sub-base.
Supply and exhaust modules: extra air feeds for long assemblies.
Zone separators: split one assembly into groups at different pressures.
End plates and electrical modules: close the assembly and carry the wiring.

ISO style plug-in systems, such as ISO 5599-2 and ISO 15407-2, share standard valve footprints. That helps when you’re sourcing equivalent valves.

Hydraulic Modular Stack Valves

In hydraulics, “modular” means sandwich valves stacked between a CETOP sub-plate and a directional valve. Each layer adds one function, such as a pilot-operated check, flow control or pressure reducing, with no extra pipework. Stacks for CETOP 3 and CETOP 5 are common on power units and mobile machines.

Adding Stations to an Existing System

Record the series code from the label on the end plate or sub-base.

Count the existing stations and note where the pressure zones sit.

Check that the tie rods or clamps will suit the new length.

Confirm the electrical module has spare outputs for the new coils.

Order the sub-bases, valves and any longer tie rods together.

Looking After a Modular System

Keep spare seals for the joints between sub-bases.
Tighten the tie rods evenly after adding stations, or the joints will leak.
Fit blanking plates to any empty station.
Label each station with its function and zone.

Modular Valve Systems Specifications to Check

Series and station width
Valve functions and number of stations
Port sizes and flow per station
Pressure zones and exhaust layout
Electrical connection and spare outputs
For stacks: CETOP size, order of functions and maximum pressure

Why Buy From TSA Hydraulics Engineering

As a modular valve systems supplier, we match the series and footprint first, so new modules seat on your existing assembly. You get OEM or equivalent options, and help sourcing modular valve systems replacement parts such as sub-bases, end plates, tie rods and seals. We tell you upfront whether a part is genuine or an equivalent.

// FAQs