--- product_id: 39829707 title: "Potter VSR-2.5, Vane-Type Waterflow Switch for 2.5-inch Steel Pipe, with Retard, SPDT Contact(s)" brand: "potter electric signal mfg us" price: "€ 432.45" currency: EUR in_stock: true category: "Potter Electric Signal Mfg Us" url: https://www.desertcart.at/products/39829707-potter-vsr-2-5-vane-type-waterflow-switch-for-2 store_origin: AT region: Austria --- # Adjustable pneumatic retard for precise timing Activates at 10 GPM flow rate 2.5-inch steel pipe compatibility Potter VSR-2.5, Vane-Type Waterflow Switch for 2.5-inch Steel Pipe, with Retard, SPDT Contact(s) **Brand:** potter electric signal mfg us **Price:** € 432.45 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of the flow—because every drop counts! ## Quick Answers - **What is this?** Potter VSR-2.5, Vane-Type Waterflow Switch for 2.5-inch Steel Pipe, with Retard, SPDT Contact(s) by potter electric signal mfg us - **How much does it cost?** € 432.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/39829707-potter-vsr-2-5-vane-type-waterflow-switch-for-2) ## Best For - potter electric signal mfg us enthusiasts ## Why This Product - Trusted potter electric signal mfg us brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Flow Detection:** Instantly triggers at 10 GPM to safeguard your sprinkler system - • **Robust Steel Construction:** Durable steel body built to last in demanding industrial environments - • **Adjustable Retard Mechanism:** Customizable delay ensures accurate flow verification without false alarms - • **Versatile Pipe Compatibility:** Fits 2" to 8" steel pipes, perfect for large-scale wet sprinkler setups - • **UL & FM Certified Reliability:** Meets top safety standards for peace of mind in critical applications ## Overview The Potter VSR-2.5 is a UL Listed, FM Approved vane-type water flow switch designed for 2.5-inch steel pipes in wet sprinkler systems. It features dual SPDT snap-action switches and an adjustable pneumatic retard, activating reliably at flows of 10 GPM or more. Engineered for durability and precision, it supports pipe sizes from 2" to 8" and meets LPC approval, making it an essential safeguard for large-scale fire protection systems. ## Description The Model VSR is a vane type water flow switch for use on wet sprinkler systems. It is UL Listed and FM Approved for use on steel pipe; schedules 10 through 40, sizes 2" thru 8" (50 mm thru 200 mm). LPC approved sizes are 2" thru 8" (50 mm thru 200 mm).The VSR may also be used as a sectional water flow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a fl ow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period. Also known as -Potter Electric Signal Mfg Us 2.5 VANE TYPE FLOW SWITCH - PL-VSR25 ## Features - POTTER ELECTRIC SIGNAL MFG US Potter Electric Signal Mfg Us 2.5 VANE TYPE FLOW SWITCH - PL-VSR25 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00D3GZJ4K | | Best Sellers Rank | #626,943 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #169 in Flow Switches | | Brand Name | Potter Electric Signal Mfg Us | | Connector Type | 2.5 | | Customer Reviews | 5.0 5.0 out of 5 stars (1) | | Exterior Finish | Steel | | Inlet Connection Type | Flange | | Manufacturer | POTTER ELECTRIC SIGNAL COMPANY | | Manufacturer Part Number | VSR-2 1/2 | | Material Type | Steel | | Model Number | VSR-2 1/2 | | Number of Ports | 1 | | Outlet Connection Size | 2.5 Inches | | Outlet Connection Type | NPT | | Size | 2.5 inches | | Specification Met | lpc approved | | Thread Size | 2.5 inches | | Thread Type | 2.5-inch NPT | | UPC | 785192014218 | | Unit Count | 1.0 Count | | Valve Type | Vane Valve | ## Product Details - **Brand:** Potter Electric Signal Mfg Us - **Exterior Finish:** Steel - **Inlet Connection Type:** Flange - **Material:** Steel - **Number of Packs:** 1 - **Number of Ports:** 1 - **Outlet Connection Size:** 2.5 Inches - **Outlet Connection Type:** NPT - **Specification Met:** lpc approved - **Unit Count:** 1.0 Count ## Images ![Potter VSR-2.5, Vane-Type Waterflow Switch for 2.5-inch Steel Pipe, with Retard, SPDT Contact(s) - Image 1](https://m.media-amazon.com/images/I/51oRR4Nn0VL.jpg) ## Frequently Bought Together - Potter VSR-2.5, Vane-Type Waterflow Switch for 2.5-inch Steel Pipe, with Retard, SPDT Contact(s) - Eastman Brass Swing Check Valve, 2 Inch IPS, Brass Plumbing Fitting, 20431LF - mxuteuk 2pcs HH52P DC 12V Coil 8 Pin 5A DPDT LED indicator Electromagnetic Power Relay, with Base, with DIN Rail Slotted Aluminum --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/39829707-potter-vsr-2-5-vane-type-waterflow-switch-for-2](https://www.desertcart.at/products/39829707-potter-vsr-2-5-vane-type-waterflow-switch-for-2) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-25*