Hydraulic Direct Acting Sequence Valves VS2C

Product Name

Hydraulic Direct Acting Sequence Valve VS2C

Model Number

VS2C Series

Brand / Manufacturer

Oleodinamica Marchesini / Marchesini Group

The VS2C is a direct-acting hydraulic sequence valve designed primarily to control the sequential operation of two hydraulic cylinders or actuators. It allows flow to the secondary circuit after the primary circuit reaches the preset pressure. Reverse flow is free through the integrated check-valve function. (Hydrapac)

Product Details

The VS2C hydraulic sequence valve is an inline pressure-controlled valve used where one hydraulic operation must be completed before another actuator begins moving.

When the pressure at the primary circuit reaches the valve's preset setting, the valve opens and directs hydraulic oil toward the secondary actuator. The reverse-flow path allows oil to return freely in the opposite direction. (Hydrapac)

This design is particularly useful where the secondary actuator operates at relatively low pressure, because the circuit pressures are additive. (Hydrapac)

Available VS2C Models

Model	Port Size	Maximum Flow	Maximum Pressure
VS2C 3/8''	G 3/8''	35 L/min	350 bar
VS2C 1/2''	G 1/2''	70 L/min	350 bar
VS2C 3/4''	G 3/4''	110 L/min	350–400 bar*

The manufacturer/reference documentation confirms VS2C versions in 3/8'', 1/2'' and 3/4'' sizes. (Hydrapac)

*Maximum-pressure information varies between published manufacturer/distributor documentation for the 3/4'' version, so the exact rating should be verified against the required manufacturer's datasheet before ordering. (Hydrapac)

Features

• Direct-acting hydraulic sequence valve

• Designed for sequential operation of two hydraulic actuators

• Pressure-controlled opening

• Free reverse flow

• Zinc-plated steel body

• Hardened and ground internal components

• BUNA N standard seals

• Guided poppet design with negligible/minor leakage

• Available in 3/8'', 1/2'' and 3/4'' port sizes

• Different pressure-setting ranges available depending on configuration (Hydrapac)

How VS2C Works

The basic operating sequence is:

Hydraulic pump → Primary actuator → VS2C → Secondary actuator

1. Hydraulic oil flows to the primary actuator.

2. The primary actuator performs its operation.

3. System pressure rises as the primary operation reaches its pressure requirement.

4. Once the preset sequence pressure is reached, the VS2C opens.

5. Oil is then supplied to the secondary actuator.

6. During reverse flow, oil can pass freely through the check-valve path. (Hydrapac)

For the standard configuration, C is connected toward the cylinder and V toward the supply. (OM Group)

Applications

VS2C sequence valves can be used in hydraulic systems requiring controlled actuator sequencing, including:

• Hydraulic presses

• Clamping and drilling circuits

• Material-handling equipment

• Construction machinery

• Mobile hydraulic equipment

• Industrial machinery

• Machine tools

• OEM hydraulic systems

• Two-cylinder sequential circuits

• Hydraulic automation systems

Specifications

Specification	VS2C
Valve type	Direct-acting sequence valve
Valve function	Sequential hydraulic actuator control
Port sizes	3/8'', 1/2'', 3/4''
Body material	Zinc-plated steel
Internal parts	Hardened and ground steel
Seal material	BUNA N standard
Poppet	Guided poppet
Reverse flow	Free
Pressure setting	Available in different ranges
Installation	Inline
Primary application	Two hydraulic actuators

Published documentation lists standard pressure-setting options, with different ranges available depending on the valve size/configuration. Exact ordering pressure should be confirmed from the manufacturer's configuration/datasheet. (Contarini Leopoldo)

Related Model Codes

Published references identify the following VS2C product codes:

• V0636 – VS2C 1/4'' reference appearing in some catalogues

• V0640 – VS2C 3/8''

• V0660 – VS2C 1/2''

• V0665 – VS2C 3/4''

• V0648 – VS2C 3/8'' - 3V

• V0663 – VS2C 1/2'' - 3V (OM Group)

Because catalogue revisions and pressure-setting variants can affect the complete ordering code, confirm the exact model code, port size and pressure setting before purchase.

FAQ

What is a VS2C hydraulic sequence valve?

The VS2C is a direct-acting hydraulic sequence valve that allows a secondary hydraulic circuit to operate after the primary circuit reaches a preset pressure.

What is the main purpose of a sequence valve?

It controls the order in which hydraulic actuators operate, allowing one operation to occur before another.

Does the VS2C allow reverse flow?

Yes. The VS2C provides free reverse flow through its check-valve function. (Hydrapac)

What sizes are available?

Published manufacturer information lists 3/8'', 1/2'' and 3/4'' VS2C versions. (Hydrapac)

Is VS2C suitable for two hydraulic cylinders?

Yes. Its primary application is sequencing the operation of two hydraulic cylinders or actuators. (Hydrapac)

Can the pressure setting be changed?

Different pressure-setting ranges and special settings are available depending on the configuration. The required setting should be specified and verified when ordering. (OM Group)

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Datasheet / Catalogue: The manufacturer datasheet identifies VS2C as a direct-acting sequence valve and provides the hydraulic diagram, application scheme and technical information. (Hydrapac)

Technical note: Specifications can vary according to port size, pressure-setting range and configuration. Please provide the required VS2C size, pressure setting and application so the correct valve can be verified before ordering.

HYDRAULIC DIRECT ACTING SEQUENCE VALVES VS2C SUPPLY BY ASIA-MECH MALAYSIA PHILIPINES THAILAND INDONESIA