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 |
| Contact Configuration | SPDT, DPDT, SPST | SPDT, DPDT, DPST, SPST | SPDT | SPDT, SPST |
| +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 |
