Combination valve

The NRVD series combination valve can be used in liquid supply, gas supply, liquid discharge, return air and other pipelines. Various modules are combined to form the required functions. Modular centralized installation greatly reduces the number of welding points in the pipeline and reduces leakage. Risk, it is recommended to install in a closed piping system, the side interface can be connected to pressure gauges, sight glasses, sensors.

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Product Information

Applicable medium: R12, R22, R502, R134a, R404a, R507, R717 and other refrigerants.

Applicable temperature: -50 ℃ ～ + 150 ℃

Nominal diameter: DN15, DN20, DN25

Nominal pressure: 2.5MPa

P1 is a pre-defined installation stop valve, P2 port filter, P3 port is a function valve, P4 port stop valve and check valve in all four functional module ports of all combination valves. Refer to Table 1 for configuration.

常用配置方案Common configuration schemes
应用管路Applicat ion pipeline	P1	P2	P3	P4
供液 Fluid supply	手动截止阀Manual stop valve	过滤器Filter	电磁阀 Solenoid valve	截止止回阀 Stop Check Valve
供液 Fluid supply	手动截止阀Manual stop valve	过滤器Filter	电动阀Electric Valve	截止止回阀Stop Check Valve
高压供液High-pressure liquid supply	手动截止阀Manual stop valve	过滤器Filter	电动阀Electric Valve	手动截止阀Manual Stop Valve
热气融霜Hot air defrost	手动截止阀Manual stop valve	过滤器Filter	电磁阀Solenoid valve	手动截止阀Manual Stop Valve
吸气调节Inhalation adjustment	手动截止阀Manual stop valve	过滤器Filter	调节阀Control valve	手动截止阀Manual Stop Valve
回气调节Back Air Regulation	手动截止阀 Manual stop valve	过滤器Filter	调节阀Control valve	手动截止阀Manual Stop Valve
泄压调节Pressure relief regulation	手动截止阀Manual stop valve	过滤器Filter	调节阀Control valve	截止止回阀 Stop Check Valve