Pressure Relief Valve

As an original factory with 23 years of R&D and production experience in ventilation and fire safety equipment, our pressure relief valve is a core functional valve for pipeline pressure management and automatic pressure relief/stabilization in ventilation systems and positive pressure air supply systems. It is mainly used in ventilation scenarios requiring pressure balance, and is an important safety accessory to ensure stable operation of ventilation systems and avoid pipeline pressure overload. The pressure relief valve automatically opens and closes according to the preset pressure threshold: when the air pressure in the pipeline or space exceeds the set value, valve blades automatically open to release excess pressure; when pressure returns to the normal range, blades close automatically. It maintains stable system pressure without manual intervention, and effectively protects ventilation equipment and pipeline structures from overpressure damage. Our pressure relief valve adopts a gravity pressure trigger structure, with accurately adjustable pressure threshold and sensitive actuation response, adapting to ventilation systems of different pressure levels.

Relying on years of design and manufacturing experience in ventilation valve parts, we have carried out special optimization on the pressure trigger mechanism and sealing structure of the pressure relief valve. Through precise counterweight and sealing structure upgrading, we ensure accurate pressure triggering and improve sealing performance after valve closure, avoiding air leakage loss under normal working conditions. Each pressure relief valve undergoes pressure actuation test before delivery to ensure opening and closing pressures meet design requirements and actuation is smooth without jamming. All valve bodies are processed and formed by CNC equipment, with firm and durable structure for stable long-term operation in various industrial and civil ventilation scenarios. Currently, this product has been widely applied in positive pressure air supply systems, industrial plant ventilation and purification workshop pressure control projects across China, and is also supplied in batches to overseas HVAC equipment purchasers and engineering contractors, winning wide recognition for stable performance.

The product is mainly used in pressure relief of building positive pressure air supply systems, pressure stabilization of industrial plant ventilation pipelines, pressure balance of purification workshops, underground space ventilation pressure relief, data center room ventilation stabilization, fire smoke exhaust system pressure relief and other scenarios. It is a functional safety accessory to ensure stable pressure of ventilation systems.

Founded in 2003, our factory has been deeply engaged in ventilation, smoke control and exhaust equipment for more than 20 years. We own a 13,000㎡ self-built standardized production workshop equipped with a full set of automated production facilities including large-format planar laser cutters, CNC shearing and bending machines, high-speed punching machines and laser welding machines. The monthly output of air damper products can reach 2,000 units, enabling us to stably undertake various large-volume conventional orders and non-standard customized orders. We have gathered a team of engineering technicians with years of R&D experience in ventilation valve parts and senior front-line production workers, with mature capabilities in product R&D, process optimization and large-scale production to ensure efficient order delivery and high consistency of product quality.

We have established a full-process quality control system from raw material warehousing to finished product delivery, with a professional quality inspection team strictly controlling each production link. Raw materials undergo material verification and specification sampling inspection before warehousing to ensure they meet product performance requirements. Self-inspection and mutual inspection systems are implemented for each process during production to promptly identify and correct process deviations. Finished products undergo 100% full inspection before delivery, with core indicators including actuation sensitivity, pressure accuracy and sealing performance tested one by one - unqualified products are never allowed to leave the factory. We also accept third-party arrival inspection entrusted by customers to fully guarantee product quality and customers' procurement rights and interests.

We offer flexible business cooperation policies. Both conventional and customized orders adopt the settlement method of 30% deposit and 70% balance payment, supporting settlement in various mainstream international currencies such as US dollars, euros and pounds. For long-term cooperative customers and regional agents with large-volume procurement, we provide exclusive price discounts and priority production scheduling. We also allow mixed orders of different models and specifications in the same batch, fully meeting the diversified stocking and project supporting needs of overseas purchasers and agents.

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