Breathing valves are safety devices essential for the normal operation of storage tanks; they not only maintain pressure balance—protecting the tank from damage due to overpressure or vacuum conditions—but also minimize the evaporative emission of stored media, thereby reducing environmental pollution.
To meet the safety testing and maintenance requirements for tanker truck breathing valves, our company has developed the HBQ series breathing valve calibration test bench, capable of precisely measuring positive and negative opening pressures as well as sealing performance. Additionally, our HVT series comprehensive test bench for atmospheric pressure tankers integrates functions such as pneumatic clamping, vacuum and low-pressure testing, and hydrostatic testing; it is widely used for calibrating specialized safety valves and breathing valves for atmospheric tankers, as well as for hydrostatic pressure testing of piping systems. Our equipment is developed and manufactured in strict accordance with national testing standards, featuring a rational structural design, ease of operation, and convenient maintenance.
Technical Specifications:
1. Relevant Standards:
GB 18564.1-2006: Road tanker for liquid dangerous goods – Part 1
API 2000: Venting Atmospheric and Low-pressure Storage Tanks (Non-refrigerated and Refrigerated)
2. Testing Pressure Range: -50.0 kPa to 150.0 kPa;
3. Employs a manual clamping mechanism supporting nominal diameters (DN) from 15 mm to 200 mm; suitable for calibrating and testing both threaded and flanged breather valves, with matching adapter tooling available for different connection types;
4. Equipped with two precision vacuum gauges and two precision pressure gauges specifically for breather valve calibration; the dual-gauge configuration ensures greater testing reliability, and the gauges feature axial panel mounting;
5. The system consists of two main units: a control cabinet and a breather valve clamping station; the integrated vacuum equipment operates silently and without vibration—ensuring no interference with calibration operations—and is housed directly within the control cabinet;
6. Capable of simultaneously performing opening pressure tests, hydrostatic tests, airflow capacity tests, manhole cover tests, and more; please contact us directly for details;
7. Please contact us directly if you require a calibration station for larger-diameter breather valves or a comprehensive test rig for atmospheric tank trucks.
