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FOR FIRE SPRINKLER SYSTEMS

SIKA VKF – Fire Sprinkler Flow Switch

SIKA® VKF Fire Sprinkler Flow Switch alarm from 1”/DN25 through to 2”/DN50 versions. Certified to LPCB, EN 12259-5 for CE & UKCA and WRAS.

The SIKA® VKF is the NEW version of Fire Sprinkler Flow Switch which has been designed to supersede the VKS model previously used in the Residential and Domestic Fire Sprinkler market. Designed to work as a low pressure loss design with the RISERTEQ Fire Sprinkler Valve Set Riser Manifolds this Fire Sprinkler Flow Switch is the most compact and fit for purpose for Residential and Domestic Fire Sprinkler systems.

This version is tested and certified with Loss Prevention Certification Board (LPCB) to EN 12259-5 and can be found in the BRE Red book live below:

Driven by magnets the SIKA VKF flow switch is robust and reliable in Residential and Domestic Fire Sprinkler systems. The flow switch enables installations into the tightest of spaces due to the unique union design and compact body. SIKA has been producing flow switches for over 45 years in the headquarters and factory in Germany. Each flow switch is fully functional tested during production which ensures reliability of installations and 100% assurance in the SIKA product. SIKA has built its name around ‘Quality by Tradition’ and the VKF flow switch is just another example of their high quality products. The flow switch uses a O-ring grove connection to ensure the PN12 pressure rating is guaranteed and fit for purpose.

Fire Sprinkler Flow Switch alarms have a harmonized code in Europe and the UK, which is EN 12259-5, this then enables correct CE marking. Using a UK notified body the SIKA Flow Switch is the first Fire Sprinkler flow switch to hold UKCA marking.

Furthermore the SIKA VKF Flow Switch has also recently been granted WRAS drinking water approval, this is for pump systems and special applications where the drinking water is not separated from the fire sprinkler system before the flow switch with a suitable non-return valve (NRV).

Features and benefits of the VKF include:

  • The most compact fire sprinkler flow switch on the market
  • Union nut for easy installation due to body not needing rotation
  • PN12 pressure rating according to EN 12259-5
  • DIN plug connector with simple EOL resister installation possible inside
  • Suitable for BS 9251:2014 and also BS 9251:2021
  • Able to detect at the lowest Fire Sprinkler Head on the market according to EN 16925:2018 and also BS 9251:2021
  • Ultra-Low pressure drop design
SIKA VKF Fire Sprinkler Flow Switch to EN12259-5 LPCB

VKF Technical data – Fire Sprinkler Flow Switch

Switching functionContact
– Closes at increasing flow rate
– Opens at increasing flow rate
Pressure rangesPN12
Temperature ranges
Medium (non-freezing)-25 – 100 °C (-13 – 392 °F)
Ambient-25 – 70 °C (-13 – 158 °F)
Electrical data50mm
Electrical connectionPlug connector DIN EN 175301-803-A incl. cable socket
Switching currentMax. 1 A
Switching voltageMax. 230 VAC, 48VDC
RatingMax. 26 VA, 20 W
Degree of protection EN 60529IP65
Protection class EN 60730-1Class II
Time delayNone
Min. rated current1 mA
Max. rated current
– @230 VAC
– @24 VDC

– 0.1 A
– 0.8 A
Nominal diameterSetpoint sensitivity*Material paddle systemArticle numbers
DN2525 l/minBrassVKF25M2114PU10
DN3226 l/minPlasticVKF32M2P14PU10
DN3225 l/minBrassVKF32M2114PU10
DN4029 l/minBrassVKF40M2114PU10
DN5030 l/minBrassVKF50M2114PU10

* (Water at 20 °C (68 °F); vertical pipeline (flow direction upwards); tolerance ±15 %.)

Dimensions

Type MMaLG
VKF25M2114PU10120103G 3/4
VKF32M2P14PU10120105.5G 3/4
VKF32M2114PU10120107.5G 3/4
VKF40M2114PU10120116.5G 3/4
VKF50M2114PU10120128.5G 3/4
Type INCHaLG
VKF25M2114PU104.7244.055G 3/4
VKF32M2P14PU104.7244.154G 3/4
VKF32M2114PU104.7244.232G 3/4
VKF40M2114PU104.7244.587G 3/4
VKF50M2114PU104.7245.059G 3/4

Find out more about the VKF in the SIKA datasheet. Find the download below:

VKF Fire Sprinkler Flow Switch – Approvals

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