KC-NRV6s-35s Danfoss series Check Valves Industrial Machinery

The Danfoss NRV belongs to check valves, which are used to ensure unidirectional fluid flow and prevent backflow. The valve body is mostly made of brass, and some connecting parts are made of copper, with connection methods such as welding or flared ends.

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Advantages

Ensure correct flow direction.

Prevent refrigerant backflow between evaporators of different temperatures.

With shock - absorbing piston, can be installed in areas with pressure pulses.

Technical Data

Type	Max. inlet pressure (P)	Max. work port press. (A/B)（A/B）bar	Nominal flow rate L/min	Max. Flow L/min	Number of ports
NRV6s	49	49	13	15	2
NRV22s	46	46	164	180	2
NRV35s	46	46	280	320	2

Applications

Liquid lines in refrigeration systems.

Suction lines in air - conditioning applications.

Hot gas lines in parallel compressor systems.

FAQ

How do you ensure product reliability without in-house production?

We hold ISO 9001/TS 16949 certifications and have over 15 years of hydraulic manufacturing experience. Each batch undergoes a 5-stage quality verification, including pressure cycle testing and material composition analysis.
How to handle component failures during the warranty period?

We offer a 12-month limited warranty (covering manufacturing defects). Simply send a diagnostic video via our platform, and our engineers will confirm repair/replacement solutions online.
Can technical drawings be provided for custom projects?

After confirming the deposit, engineering schematics can be shared under an NDA. Our advanced production system shortens lead times by 30% compared to traditional suppliers.
What is the minimum order quantity (MOQ) for hydraulic valves?

Standard models have a flexible MOQ of 50 pieces. Sample orders start from 20 pieces.
How to handle urgent breakdowns?

Our national partners stock critical spare parts in 6 regional centers, with priority delivery services available at major ports.
What are the payment terms for new customers?

A 50% T/T advance payment is required for the first transaction. Payment terms can be further discussed after three consecutive successful deliveries.
Are certification documents available?

Each shipment includes CE/ISO/REACH certificates. Special certifications (e.g., ATEX) require 45 days' prior notice.
Can you provide samples?

Yes. We can supply samples for your testing and verification needs. For sample requests, please inform us of the specific product model, quantity, and any special requirements. We’ll communicate details like sample preparation time, shipping arrangements, and relevant costs (e.g., sample production fees, logistics charges; partial costs may be negotiable under certain conditions).