---
product_id: 53447346
title: "Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM"
brand: "quadrafire"
price: "€ 75.48"
currency: EUR
in_stock: true
reviews_count: 8
category: "Quadrafire"
url: https://www.desertcart.it/products/53447346-quadrafire-vacuum-low-draft-negative-pressure-switch-sensor-srv7000-531
store_origin: IT
region: Italy
---

# Replaces multiple legacy parts Precise airflow & pressure detection OEM fit with included hoses Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM

**Brand:** quadrafire
**Price:** € 75.48
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your pellet stove firing flawlessly — never miss a cozy moment! 🌡️

## Quick Answers

- **What is this?** Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM by quadrafire
- **How much does it cost?** € 75.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/53447346-quadrafire-vacuum-low-draft-negative-pressure-switch-sensor-srv7000-531)

## Best For

- quadrafire enthusiasts

## Why This Product

- Trusted quadrafire brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Compact Design:** Lightweight plastic housing with brass contacts fits discreetly while delivering robust, long-lasting operation.
- • **Seamless OEM Compatibility:** Direct replacement for Quadra-Fire & Heatilator models with included hoses for effortless installation.
- • **Advanced Airflow Monitoring:** High-precision vacuum switch sensor ensures your pellet stove operates safely by detecting airflow restrictions instantly.
- • **Multi-Part Replacement Power:** Consolidates several outdated switches (SRV7000-166, 812-3430, 812-1990) into one reliable unit—simplify your maintenance.
- • **Safety-First Exhaust Control:** Monitors exhaust back pressure to prevent stove malfunctions and maintain optimal combustion performance.

## Overview

The SRV7000-531 is a precision-engineered OEM vacuum pressure switch designed for pellet stoves, providing reliable airflow and exhaust pressure monitoring. Compatible with multiple Quadra-Fire, Heatilator, and Pleasant Hearth models, it replaces several legacy parts and includes hose connections for easy installation. This sensor ensures safe, efficient stove operation by detecting airflow restrictions and supporting proper feed system function.

## Description

Reliable OEM Airflow Monitoring - This OEM pellet stove vacuum pressure switch functions as a safety sensor switch designed to monitor airflow conditions in compatible pellet stove systems.Detects Airflow & Vent Pressure - The integrated vacuum switch acts as an exhaust back pressure sensor, helping detect airflow restrictions within the pellet stove pipe and internal vent pathways.Supports Proper Feed System Operation - This flow switch sensor monitors airflow inside the fire box and exhaust chamber. If abnormal pressure is detected, the pressure switch can interrupt the feed system circuit.OEM Replacement Built for Compatibility - Designed as a dependable pellet stove vacuum switch with included hose connections. This pressure switch sensor is manufactured to OEM specifications for reliable performance.

Review: Works for Quadrafire Castile - So far so good. I have a circa 2005 Quadrafire Castile. Symptom was that after initial feed and fire ignites, second stage of auger feed does not begin, and fire goes out. Original Vacuum switch part DFS-221-271 failed in 2019. Got OEM replacement part DFS-221-347. That switch worked for five years, but same problem happened again. This new part has different form factor (round instead of square) and plastic rather than metal, so wasn’t sure if it would work, but got it installed, and unit is working again just in time for colder weather. Red wire on + and orange wire on -. Hope this info helps others troubleshooting their stove.
Review: Price - Awesome

## Features

- OEM FIT WITH INCLUDED HOSES - Reliable pellet stove vacuum switch replacement designed for airflow monitoring. Includes hose connections. Replaces all previous Quadra-fire vacuum switches, including SRV7000-166, 812-3430, 812-1990 and SRV7000-447
- PRECISE AIRFLOW DETECTION - Advanced vacuum switch and flow switch sensor monitors airflow within the fire box, venting, and pellet stove pipe. Functions as a responsive pressure switch sensor for pellet stove systems and helps detect restrictions and support proper pellet stove operation.
- REPLACES MULTIPLE PARTS - Direct OEM pressure switch replacement for SRV7000-166, 812-3430, 812-1990 and SRV7000-447. This sensor switch functions as a dependable pellet stove vacuum pressure switch in compatible units.
- SUPPORTS SAFE STOVE OPERATION - Designed as an exhaust back pressure sensor and flow switch that monitors pressure changes in the fire chamber and exhaust path, helping pellet stoves respond to airflow issues.
- COMPATIBLE WITH MANY MODELS - OEM pressure switches designed for select Quadra-Fire, Heatilator and Pleasant Hearth models. Durable fireplace vacuum monitoring component helps regulate airflow and maintain stove performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076BWJQPH |
| Actuator Type | Plunger |
| Best Sellers Rank | #1,195,346 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #506 in Fireplace Replacement Parts |
| Brand | Quadrafire |
| Brand Name | Quadrafire |
| Circuit Type | 1-way |
| Color | Black |
| Compatible Devices | Quadra-Fire: ~ 800 ~ 1000 ~ 1100I ~ Castile FS ~ Castile Insert ~ Santa Fe FS ~ Santa Fe B ~ Santa Fe Insert ~ Classic Bay 1200 FS – CB1200 ~ Classic Bay Insert – CB1200I ~ Contour ~ Original Mt Vernon – 4 Spd Control ~ Mt Vernon AE FS ~ Mt Vernon AE Insert ~ Mt. Vernon E2 FS ~ Mt. Vernon E2 Insert ~ Edge 60 Insert Heatilator: ~ Eco-Choice PS35 – PH35 ~ Eco- Choice PS50 – PH50 ~ Eco-Choice CAB50… |
| Connectivity Protocol | X-10 |
| Connector Type | Spade Connectors and Hose Nozel |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Control Method | Remote |
| Controller Type | Flow Switch, Pressure Switch |
| Customer Reviews | 4.6 out of 5 stars 201 Reviews |
| International Protection Rating | IP00 |
| Item Dimensions | 1 x 0.75 x 0.75 inches |
| Item Weight | 5.6 ounces |
| Manufacturer | HHT |
| Material Type | Plastic |
| Model | SRV7000-531 |
| Mounting Type | vent |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operation Mode | automatic |
| Part Number | SRV7000-531 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | UL |
| Switch Type | Flow Switch, Pressure Switch |
| Terminal | Screw |
| UPC | 850745008102 |
| Unit Count | 1.0 Count |
| Wattage | 300 watts |

## Product Details

- **Actuator Type:** Plunger
- **Brand:** Quadrafire
- **Circuit Type:** 1-way
- **Connector Type:** Spade Connectors and Hose Nozel
- **Contact Type:** Normally Open
- **Material:** Plastic
- **Mounting Type:** vent
- **Operation Mode:** automatic
- **Switch Type:** Flow Switch, Pressure Switch
- **Terminal:** Screw

## Images

![Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM - Image 1](https://m.media-amazon.com/images/I/617c2Zfd3iL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works for Quadrafire Castile
*by M***7 on November 12, 2025*

So far so good. I have a circa 2005 Quadrafire Castile. Symptom was that after initial feed and fire ignites, second stage of auger feed does not begin, and fire goes out. Original Vacuum switch part DFS-221-271 failed in 2019. Got OEM replacement part DFS-221-347. That switch worked for five years, but same problem happened again. This new part has different form factor (round instead of square) and plastic rather than metal, so wasn’t sure if it would work, but got it installed, and unit is working again just in time for colder weather. Red wire on + and orange wire on -. Hope this info helps others troubleshooting their stove.

### ⭐⭐⭐⭐⭐ Price
*by S***S on February 16, 2026*

Awesome

### ⭐⭐⭐⭐⭐ My Vernon fix
*by J***P on December 11, 2025*

Perfect for my Vernon quadra fire. Original.

## Frequently Bought Together

- Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM
- Quadrafire Limit Snap Disc Switch #2 - Castile, Sante fe SRV7000-268 812-0320 FC
- Quadra-Fire Replacement Manual Reset Snap Disc #3

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-06-18*