Products

Positive & Negative Pressure Valve Test Equipment for DN50-DN250 Breathing Valves

A professional integrated valve test equipment dedicated to detecting set pressure (positive pressure exhalation & negative pressure inhalation) and seat tightness of breathing valves, widely applied in special inspection institutions, chemical storage tank facilities, and factory outgoing inspections.

Item No. :
HJVTE-008
Minimum Order Quantity (MOQ) :
1 Set
Payment Method :
T/T,L/C
Price :
Negotiatable
Product Origin :
China/Türkiye
Supply Ability :
1 sets per 2 months
Lead Time :
60 days
Conventional packaging :
Plywood

Inquiry now

Product Details

Positive & Negative Pressure Valve Test Equipment for DN50-DN250 Breathing Valves

Product Introduction

The breathing valve test equipment is a core device for safety testing and factory inspection of breathing valves. It is specifically designed to address the testing needs of breathing valves used in large-scale chemical storage tanks and other key industrial scenarios, as well as the detection requirements of professional inspection institutions. The equipment focuses on two core performance indicators of breathing valves: positive pressure exhalation set pressure, negative pressure inhalation set pressure, and valve seat tightness. By simulating actual working conditions, it provides accurate and reliable test data to verify whether the breathing valve meets safety operation standards, ensuring the safe and stable operation of storage tanks and related industrial systems. Its design adheres to industrial testing logic, emphasizing accuracy, stability, and operability, and it is an indispensable testing tool in the production and application process of breathing valves.

Product Features

High adjustment precision: Equipped with professional pressure regulation components, ensuring precise control of test pressure and accurate acquisition of test results.
Integrated test design: Combines positive pressure and negative pressure testing functions in one device, enabling quick and smooth switching between two test modes without additional equipment assembly.
Independent R&D pressure data logger: Comes with a self-developed pressure recording system that continuously collects and stores test pressure data, facilitating traceability and analysis of test processes.
Automatic clamping system: Adopts intelligent automatic clamping technology, which is safe and reliable, effectively reducing manual operation intensity and improving test efficiency.
Cost-effective operation: Features low daily maintenance requirements, long service life of core components, and cost-effective replacement parts, reducing long-term use costs for users.
Wide applicability: Compatible with breathing valves of DN50-DN250 specifications, covering most mainstream industrial breathing valve models on the market.

Standards

Standard Number	Standard Name	Detailed Compliance Requirements
ISO 28300:2008	Petroleum and natural gas industries - Tank equipment for refrigerated liquefied gases - Design and construction	Complies with the technical specifications for breathing valve pressure testing in the standard, meeting the safety test requirements for tank equipment used in refrigerated liquefied gas storage and transportation.
API Standard 2000 (10th Edition)	Venting Atmospheric and Low-Pressure Storage Tanks	Meets the testing requirements for set pressure accuracy and seat tightness of breathing valves specified in the standard for atmospheric and low-pressure storage tanks in the petroleum industry.
EN 12266-1:2019	Industrial valves - Pressure test methods - Part 1: Pressure test, leakage test	Conforms to the pressure test procedures and leakage test evaluation criteria for industrial valves in Part 1 of the standard, ensuring the scientificity and authority of the test process.
GB/T 12244-2019 (China National Standard, aligned with international standards)	Safety valves - General technical conditions	Complies with the general technical requirements for safety valve testing, including pressure setting accuracy and sealing performance indicators, ensuring compatibility with both domestic and international application scenarios.
ASME B16.34-2022	Valves - Flanged, Threaded, and Welded End Connections	Meets the dimensional and pressure testing compatibility requirements for valve connections specified in the standard, ensuring the equipment's adaptability to breathing valves of international standard connections.

Technical Parameters

Parameter Category	Specific Specifications
Test Medium	Low-pressure compressed air, nitrogen cylinder (purity ≥ 99.5%), high-pressure air compressor
Test Pressure Range	Positive pressure: 0-30kPa (customizable up to 50kPa); Negative pressure: -0.5~0kPa (customizable to -1kPa)
Applicable Valve Specification	DN50-DN250 (compatible with flange and threaded connection types)
Pressure Measurement Precision	±0.1kPa
Sealing Test Precision	≤0.05kPa/min (pressure drop)
Clamping Method	Pneumatic automatic clamping, clamping force adjustable (0-500N)
Data Recording Mode	Independent R&D pressure data logger, real-time recording (sampling frequency: 1Hz)
Data Storage Capacity	≥100,000 sets of test data (support USB export)
Operating Temperature	5℃-40℃
Relative Humidity	≤85% (non-condensing)
Power Supply	AC 220V±10%, 50/60Hz, Power: ≤500W
Operation Mode	Touch screen + physical buttons (dual control)
Equipment Dimensions (L×W×H)	1750mm×750mm×1520mm
Net Weight	252kg
Protection Level	IP54 (dustproof and splashproof)
Noise Level	≤65dB(A)
Air Source Requirement (for clamping)	0.4-0.6MPa compressed air
Nitrogen Pressure Requirement	0.3-0.5MPa
Display Screen	7-inch color touch screen, resolution 800×480
Test Report Output	Support PDF/Excel format (export via USB)
Service Life of Core Components	≥8000 working hours

Test Objects & Detection Items

Test Objects

Industrial breathing valves (including spring-type, weight-type breathing valves)
Pressure relief valves for chemical storage tanks
Vacuum relief valves
Combined pressure/vacuum relief valves
Tank breathing valves for petroleum, chemical, and LPG industries
Breathing valves for low-temperature storage tanks