3/8 in 1/2 in Diaphragm Vertical Swing Check Valve for HVAC System

Since its establishment in 2002, Duling has been developing and manufacturing reliable, high- quality standard automation components, offering innovative solutions and components, be able to outfit the best machines and production systems to meet any requirement in pressure control systems.
In pneumatics, HVAC, refrigeration, automotive, food and beverage processing, household appliance, industrial automation, Duling can always provide clients with accurate and dependable pressure control devices.
We devote to developing and manufacturing automatic controllers in Changzhou factory. Major product category includes pressure controllers, differential pressure controllers, flow switches, temperature controllers, condensing pressure regulating valves, temperature water flow regulating valves, solenoid valves, valve glasses, magnetic force flow switches, thermal expansion valves etc.
Except a whole range of standard products, Duling can also offer specific customized solutions, especially design to meet particular actual requirements.
With huge investments in R&D, high-quality working team, strict quality control and elaborate innovation design, we will provide customers with products of reliable quality and excellent performance at a reasonable price.
The successful and lasting presence in North America, Europe, Asia, Australia and South America, the famous TUV, UL, CQC, ROHS certification and many other specific product approvals prove Duling to be a qualified international manufacturer with the ability to adapt to a variety of technical requirements.
We will continue insisting our policy of innovation " Lean Management , Continuous Improvement and Customer Satisfaction" to provide our customers with high-quality products and services.