SMC Rotary Knob Pressure Release Valve VHS40-D Series, G 1/2 in, III B

RS Stock No.:: 255-2889
Mfr. Part No.:: VHS40-F04-D
Manufacturer:: SMC

SMC Rotary Knob Pressure Release Valve VHS40-D Series, G 1/2 in, III B

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Subtotal (1 unit)*

MYR257.06

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Units	Per Unit
1 +	MYR257.06

*price indicative

RS Stock No.:: 255-2889
Mfr. Part No.:: VHS40-F04-D
Manufacturer:: SMC

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	SMC
	Product Type	Pressure Release Valve
	Control Mechanism	Rotary Knob
	Port Size	1/2 in
	Port Type	EXH
	Connection Thread Standard	G
	Series	VHS40-D
	Control Button/Switch Colour	Red
	Maximum Operating Pressure	10 bar
	Body Material	Polybutylene Terephthalate
	Maximum Flow Rate	14098L/min
	Minimum Operating Temperature	-5°C
	Valve Function	Pressure Release
	Maximum Operating Temperature	+60°C
	Standards/Approvals	OSHA, RoHS
	Number of Ports	3
	Thread Size	2.5 mm
	Model Number	III B

	Select all
	Brand SMC
	Product Type Pressure Release Valve
	Control Mechanism Rotary Knob
	Port Size 1/2 in
	Port Type EXH
	Connection Thread Standard G
	Series VHS40-D
	Control Button/Switch Colour Red
	Maximum Operating Pressure 10 bar
	Body Material Polybutylene Terephthalate
	Maximum Flow Rate 14098L/min
	Minimum Operating Temperature -5°C
	Valve Function Pressure Release
	Maximum Operating Temperature +60°C
	Standards/Approvals OSHA, RoHS
	Number of Ports 3
	Thread Size 2.5 mm
	Model Number III B

COO (Country of Origin):: CN

SMC VHS40-D Series Pressure Release Valve, 10 Bar Maximum Operating Pressure, 14098L/min Maximum Flow Rate - VHS40-F04-D

This pressure release valve is a Compact pneumatic device designed to manage supply and exhaust flows in industrial automation systems. It operates as a three-port exhaust valve with a rotary knob control and a red control button, intended for installation in equipment where controlled venting and safe isolation of compressed Air are required. The valve is suitable for ambient and fluid temperatures from −5 to +60°C and connects using G-thread ports.

Features & Benefits

• High Peak flow capacity of 14,098 L/min for Rapid venting
• Rated to operate up to 10 bar for industrial pressure systems
• Polybutylene terephthalate construction resists mechanical wear
• Rotary knob control enables simple manual switching action
• Lockable exhaust position allows padlock isolation for safety
• Three-port configuration permits separate supply and exhaust routing

Applications

• Suitable for isolating actuators during maintenance operations
• Ideal for use with pneumatic control panels and FRL units
• Used with automation equipment requiring Rapid depressurisation
• Can be used for modular pneumatic manifolds in manufacturing
• Suitable for electrical cabinet Air venting and service routines

What port size and thread type does it use for piping?

The valve uses a 1/2 in port size with G (BSP) thread for the exhaust connection and mating ports.

How should it be operated to avoid damage to internal parts?

The control requires a two-step action on double-action variants: push the handle fully before turning

incomplete push before turning can damage internals.

Are there options to reduce exhaust noise or mount the valve?

A built-in silencer assembly is available for the exhaust port and a bracket assembly can be fitted for mounting.

What environmental precautions should be observed during installation?

Avoid corrosive or explosive atmospheres, direct sunlight and excessive vibration, and ensure piping is flushed to remove debris before connection.

What torque guidelines apply when fitting pipe connections?

Recommended thread-tightening torques depend on thread size, for example 28 to 30 N·m for 1/2 in connections and 36 to 38 N·m for 1 in.