Factory Set Vacuum Switch

Here at Presair, we’re happy to provide a cross-reference guide for both ours and a couple of our competitor’s factory set vacuum switches. This guide is designed to assist you in comparing our products with those of notable competitors Tecmark, Herga, and Lefoo. Click here to learn more about our line of factory set vacuum switches.

Presair Tinytrol miniature vacuum switches make electrical contact when a certain set pressure has been reached on its input. Their miniature size & variety of connection styles for simple implementation into any system. These switches allow for simple electrical on/off control over vacuum. As vacuum rises or falls, one contact opens as the other closes. This provides a perfect solution for monitoring, controlling, & notifying. Tinytrol Miniature Vacuum Switches are preset at the factory to actuate at your specific requirements.

This article focuses on Tecmark V4000 series, Herga’s HPS-600-V series, and Lefoo’s LFS-02 series. If you currently utilize one of these series and are exploring alternatives or seeking a precise cross-reference, this guide is tailored to you. Whether you’re an experienced technical professional or navigating the technical details of sequencing vacuum switches, our cross-reference guide is designed to streamline your decision-making process, ensuring a precise match for your specific technical requirements.

Factory Set Vacuum Switches – Cross Reference

Manufacturer Presair Tecmark Herga Lefoo
Product Name Tinytrol V4000 HPS-600-V LFS-02
Mounting Styles & Air Connections 1/8 NPt, Radial /w Side Air Spout, Threaded Center Air Spout 1/8 NPT Male, 1/4 NPT Male, 3/16 Barbed, 1/8, 3/16, 1/4 compression, 1/8NPT Female /w /2 Conduit male external thread Mounting Plate /w 2 Screws, Port Holes for 4 self tapping screws, 1/8″ BSPT & NPT Brass 4 screws mounting hole /w optional bracket
Construction Plastic Plated Steel, Plastic Plastic, Steel, Brass Plastic, Steel Plating
Diaphragm Material Options Nitrile, EPDM, Silicone Buna-N, EPDM, Hydrin, Elastomeric Urethane Nitrile, EPDM, FVMQ
Function Open or Close on Pressure Rise or Fall Open or Close on Pressure Rise or Fall Open or Close on Pressure Rise or Fall Open or Close on Pressure Rise or Fall
Pressure Range 2.5WC” – 300 WC” (-2.5″WC) – 100PSI 2″WC – 387″WC 2″-320″WC
Max. Proof Pressure Varies Maxes will vary depending on switch variables 70 psi 400″WC
+100,000 Max. Resistive Cycle Rating @120VAC 25 Amp (240Vac) 25 Amp (250Vac) 15Amp (250Vac) 16 Amps
Certifications UL, cUL, RoHS, REACH UL, cUL, RoHS, REACH; CE available UL on select switches UL, cUL, CE
Country of Origin USA USA UK China


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Pneumatic Switches

Presair pneumatic switches are great for safe, economical control of consumer, industrial, medical or other products and appliances in wet, chemical or explosive atmospheres, or just for added safety.

High Quality

Presair switches are 100% testing before leaving our facilities.

Made in U.S.A.

Products are designed & manufactured in Eau Claire, Wisconsin, USA.

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