---
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: "HK$3021"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/39829707-potter-vsr-2-5-vane-type-waterflow-switch-for-2
store_origin: HK
region: Hong Kong
---

# Adjustable pneumatic retard Activates at 10 GPM flow Steel build for durability 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:** HK$3021
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the flow with Potter VSR-2.5 — where precision meets protection!

## 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?** HK$3021 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/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 Activation:** Triggers instantly at 10 gallons per minute, ensuring timely water flow detection.
- • **Certified Safety & Compliance:** UL Listed, FM Approved, and LPC approved for peace of mind in professional installations.
- • **Dual SPDT Snap Action Switches:** Two single pole double throw switches for versatile and reliable signaling.
- • **Built to Last Steel Construction:** Robust steel body engineered for long-term reliability in demanding sprinkler systems.
- • **Customizable Delay with Pneumatic Retard:** Adjust the response time to prevent false alarms and optimize system performance.

## Overview

The Potter VSR-2.5 is a vane-type water flow switch designed for 2.5-inch steel pipes in wet sprinkler systems. Featuring a durable steel construction, dual SPDT snap action switches, and an adjustable pneumatic retard, it activates reliably at flows of 10 GPM or more. UL Listed, FM Approved, and LPC certified, it ensures professional-grade performance and safety compliance 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 |
|---------------|-------|
| Material | Steel |
| Brand | Potter Electric Signal Mfg Us |
| Exterior Finish | Steel |
| Inlet Connection Type | Flange |
| Outlet Connection Type | NPT |
| Number of Ports | 1 |
| Outlet Connection Size | 2.5 Inches |
| Specification Met | lpc approved |
| Manufacturer | POTTER ELECTRIC SIGNAL COMPANY |
| UPC | 785192014218 |
| Part Number | VSR-2 1/2 |
| Item Weight | 4 pounds |
| Package Dimensions | 12 x 6 x 6 inches |
| Item model number | VSR-2 1/2 |
| Size | 2.5 inches |
| Color | Steel |
| Item Package Quantity | 1 |
| Mounting Type | Snap In Mount |
| Switch Style | Flow Switch |
| Batteries Required? | No |

## Product Details

- **Material:** Steel
- **Brand:** Potter Electric Signal Mfg Us
- **Exterior Finish:** Steel
- **Inlet Connection Type:** Flange
- **Outlet Connection Type:** NPT
- **Number of Ports:** 1
- **Outlet Connection Size:** 2.5 Inches
- **Specification Met:** lpc approved
- **Manufacturer:** POTTER ELECTRIC SIGNAL COMPANY
- **UPC:** 785192014218

## 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)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-08*