---
product_id: 646866433
title: "bmotiontech over pressure relief valve keeps vacuum chamber below excessive positive pressure < 1.5psig, improved version, One-piece valve body, minimized potential leak (KF25 flange)"
brand: "brownian motion technology"
price: "€ 122.98"
currency: EUR
in_stock: true
category: "Brownian Motion Technology"
url: https://www.desertcart.be/products/646866433-bmotiontech-over-pressure-relief-valve-keeps-vacuum-chamber-below-excessive
store_origin: BE
region: Belgium
---

# Minimized leak potential with KF25 flange One-piece stainless steel valve body Pressure relief at precise 1.5 psig threshold bmotiontech over pressure relief valve keeps vacuum chamber below excessive positive pressure < 1.5psig, improved version, One-piece valve body, minimized potential leak (KF25 flange)

**Brand:** brownian motion technology
**Price:** € 122.98
**Availability:** ✅ In Stock

## Summary

> ⚙️ Keep your vacuum system flawless — pressure relief perfected.

## Quick Answers

- **What is this?** bmotiontech over pressure relief valve keeps vacuum chamber below excessive positive pressure < 1.5psig, improved version, One-piece valve body, minimized potential leak (KF25 flange) by brownian motion technology
- **How much does it cost?** € 122.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/646866433-bmotiontech-over-pressure-relief-valve-keeps-vacuum-chamber-below-excessive)

## Best For

- brownian motion technology enthusiasts

## Why This Product

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

## Key Features

- • **Precision Pressure Control:** Spring-loaded piston activates exactly at 1.5 psig to protect your vacuum system from overpressure.
- • **Fail-Safe Overpressure Protection:** Automatically prevents damage to sensitive vacuum components like viewports and pumps.
- • **Optimized KF25 Flange Compatibility:** Industry-standard ISO-KF25 flange for secure, leak-proof integration with your equipment.
- • **Trusted Industrial Grade Performance:** Backed by ISO and ASTM specifications, designed for professional-grade reliability.
- • **Seamless Stainless Steel Construction:** Durable one-piece valve body engineered to eliminate leaks and ensure longevity.

## Overview

The bmotiontech Over Pressure Relief Valve is a precision-engineered, one-piece stainless steel valve designed to maintain vacuum chamber pressure below 1.5 psig. Featuring a spring-loaded piston that opens at a precise threshold, it prevents overpressure damage to pumps and vacuum components. With ISO-KF25 flange compatibility and minimized leak potential, this valve offers reliable, industrial-grade protection for critical vacuum systems.

## Description

💥 Prevent excessive positive pressure build-up in pumps or vacuum chambers 🚿 Spring loaded piston pushed open when chamber pressure > 1.5 psig or 16.2 psia or 1116 mbar🔒 Spring loaded piston close when chamber pressure <16.2 psia or 1116 mbar📝 Piston open @ PISA = 16.2 psia +/- 0.3 PSI or 1.5 psig +/- 0.3 PSI⚛️ Made of stainless steel

## Features

- 👑 Improved version. The valve body is made of 1pcs stainless steel, minimizing potential leaks.
- 💥 Prevent excessive positive pressure build-up in pumps or vacuum chambers
- 🚿 Spring loaded piston pushed open when chamber pressure > 16.2 psia /1.5 psig / 1116 mbar
- 🔒 Spring loaded piston close when chamber pressure < 16.2 psia (1.5psig) or 1116 mbar
- 👌 Prevent accidental vacuum chamber overpressure and damage to viewports, feedthroughs & pumps
- ⚛️ Made of stainless steel, ISO-KF25 KF25 NW25 flange

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D2588Z6Y |
| Best Sellers Rank | #252,972 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #272 in Relief Valves |
| Brand Name | BROWNIAN MOTION TECHNOLOGY |
| Connector Type | Flanged |
| Customer Reviews | 4.0 4.0 out of 5 stars (1) |
| Exterior Finish | Stainless Steel |
| Inlet Connection Size | 40 Millimeters |
| Inlet Connection Type | Flange |
| Manufacturer | BROWNIAN MOTION TECHNOLOGY |
| Material Type | Stainless Steel |
| Maximum Pressure | 16 Pound per Square Inch |
| Model Number | BMT-PRV-S-KF25 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 25 Millimeters |
| Outlet Connection Type | Flange |
| Size | 40mm inlet, 25mm outlet |
| Specification Met | ISO, ASTM |
| Thread Size | 25 millimeters |
| Thread Type | KF |
| Unit Count | 1.0 Count |
| Valve Type | Pressure Relief Valve |

## Product Details

- **Brand:** BROWNIAN MOTION TECHNOLOGY
- **Exterior Finish:** Stainless Steel
- **Inlet Connection Size:** 40 Millimeters
- **Inlet Connection Type:** Flange
- **Material:** Stainless Steel
- **Maximum Operating Pressure:** 16 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 25 Millimeters
- **Outlet Connection Type:** Flange
- **Specification Met:** ISO, ASTM

## Images

![bmotiontech over pressure relief valve keeps vacuum chamber below excessive positive pressure < 1.5psig, improved version, One-piece valve body, minimized potential leak (KF25 flange) - Image 1](https://m.media-amazon.com/images/I/516mAteAATL.jpg)

## Available Options

This product comes in different **Style** options.

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-10-03*