Danfoss Refrigeration solder, Angle, ods Check Valves Type NRV NRVH
Product Description
NRV and NRVH can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plants with fluorinated refrigerants. NRV and NRVH can be supplied with flare and solder connections. They are also available with oversize solder connections providing flexibility in the use of check valves.
Product Features
NRV
Copper solder connections
Straightway
Max. Working pressure = 46 bar. Max. Test pressure = 60 bar. Temperature of the medium: -50 - +140° C
NRV and NRVH can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plant with fluorinated refrigerants.
NRV and NRVH can also be supplied with oversize connections providing flexibility in the use of check valves.
Features
The valve ensures only correct flow direction
Both straightway and angleway version
Prevents back-condensation from warm to cold evaporator
Built-in damping piston
That makes the valves suitable for
Installation in lines where pulsation can occur, e. G. In the discharge line from the
Compressor.
NRVH is supplied with spring to
P = 0.3 bar.
Used in refrigeration plant with compressors connected in parallel.
Oversize connections provide flexibility in use.
Technical data
Max. Working pressure
PB = 28 bar
Max. Test pressure
P' = 36, 4 bar
Temperature of the medium
50 140 C
Dimensioning and selection
When dimensioning and selecting check valves to be mounted into the compressor discharge line, it is important to be aware of the following:
The differential pressure across the check valve must always be higher than the given
Minimum pressure drop at which the valve is completely open. This also applies to lowest capacities for compressors with capacity
Regulation.
In refrigeration plant with compressors connected in parallel, it is advantageous to use NRVH equipped with a stronger spring than NRV.
With check valve, type NRVH, resonance problems can be avoided at partial load in the
Refrigeration plant. The differential pressure across NRVH at partial load must not be lower than minimum pressure drop for NRVH
With completely open valve.
1. Reliable supplier with 10 years experience.
2. Mature technique and professional employee.
3. Authorized certificates like SGS, CE and ISO9001
4. Competitive factory wholesale prices
5.24 hours in service for the customers
6. Safe and fast delivery.
About US:
Our main products are as follows:
1, COPELAND COMPRESSORS, VR, ZR, ZB, ZH SERIES,
2, DANFOSS PERFORMA COMPRESSORS, SM, SZ, SH SERIES,
3, MANEUROPE PISTON COMPRESSORS, MT, MTZ NTZ, MPZ SERIES
4, DANFOSS COMMERCIAL COMPRESSORS, FR, SC SERIES, .
5, DANFOSS AIR CONDITIONAING AND REFRIGERATION PARTS,
TE, TDE, TGE, PHT SERIES TERMOSTATIC EXPANSION VALVES
ETS SERIES EXPANSION VAVLES,
EVR SERIES ECPANSION VAVLES AND
KP1, KP5, KP15 SERIES PRESSURE CONTROLS
DCL DML LIQUID LINE FILTER DRIERS
With arising market and demand on Chinese original products, we supply only quality and qualified Chinese products with our own Brand or OEM brand on following products:
BALL VAVLES, HAND VAVLES, OIL SEPERATORS, WITH RELIABLE QUALITY.
By standing on ground of Chinese market, we could serve our customers in refrigeration and air conditioning globally. With our best product quality and good service, we can cooperate with our customer to improve their products quality and reduce the cost.
We have sales channels all around the world and products well received by our clients.
We hope to establish close cooperation relationship with our partners and distributors, and develop our business together in this fast growing environment.
You are welcomed to make any enquiry!
