Festo Rotary Pneumatic Manual Control Valve MS Series

RS Stock No.:
Mfr. Prt No.:

Technical Reference

Legislation and Compliance

RoHS Certificate of Compliance

RS Components
RoHS Certificate of Compliance

EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.

Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.

RS definition of RoHS Compliance:

  • The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
  • and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering

The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:

PBB (Polybrominated Biphenyls)0.1%
PBDE ( Polybrominated Diphenyl Ethers)0.1%
Hexavalent Chromium0.1%
DEHP (Bis (2-Ethylhexl) phthalate)0.1%
BBP (Benzyl butyl phthalate)0.1%
DBP (Dibutyl phthalate)0.1%
DIBP (Diisobutyl phthalate)0.1%

The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".

RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.

Compliant Product Details
RS stock number 1215649
Product description Festo Rotary Pneumatic Manual Control Valve MS Series
Manufacturer / Brand Festo
Manufacturer part number MS4-EM1-1/4-S

RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 1215649
Product description Festo Rotary Pneumatic Manual Control Valve MS Series
Manufacturer / Brand Festo
Manufacturer part number MS4-EM1-1/4-S

The foregoing information relates to product sold on, or after, the date shown below.


Date Jul 18, 2024

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Country of Origin: HU

Product Details

Soft Start and Quick Exhaust Valves

MS Series Manual Soft Start Valves

The FESTO MS series features manually operated on-off valves for pneumatic installations, allowing pressure to gradually build up when turned on and then rapidly venting air when turned off. The rotary knob can be fitted with a padlock when switched off to prevent tampering, and at connection port three a silencer can be fitted. A pressure gauge or sensor can be installed for optional system monitoring and a module connector for connection to MS4 or MS6 combination air preparation units is available.

Features and Benefits

  • Available with G1/4 or G1/2 ports

  • Can be fitted to MS4 and MS6 Series Modular units

  • The on-off valve is activated via a rotary knob

  • Non-reversible flow direction

  • Rotary slide valve design

  • Manual actuation

  • Corrosion resistance classification of 2, offering protection against moderate corrosion stress within indoor and industrial applications

  • In-line installation mounting type


Attribute Value
Brand Festo
Maximum Operating Pressure 14 bar
Thread Standard G
Body Material Aluminium
Minimum Operating Temperature -10 °C
Maximum Operating Temperature +60 °C
Control Mechanism Rotary
Manufacturer Series MS
Thread Size 1/4 in
Connection Port Thread G 1/4
Control Button/Switch Colour Black
Number of Ports 3
Number of Positions 2
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