NRVH straightway flare check valve high efficient copper check valve for compressor unit
USD $80 - $350 /Piece
Min.Order:10 Pieces
Hangzhou Yemoo Refrigeration Equipment Co., Ltd.
Why choose it ?
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The Danfoss NRV and NRVH check valves are optimized for use in liquid, suction and hot gas lines in commercial refrigeration to ensure correct flow direction. The NRVH valve is especially designed for plants where the compressors are connected in parallel.
The check valves prevent back-condensation from warm to cold evaporator and the built-in dampening piston makes the valve suitable for installation in lines where pulsation can occur, e.g. in the discharge line from the compressor.
Features:
Ensure correct flow direction.
Available in both straightway and angleway versions.
Prevents back-condensation from warm to cold system part.
Solder versions are compliant with ATEX hazard zone 2.
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.
In refrigerationplants with compressors connected in parallel. it is advantageous to use NRVH. since the spring is stronger than in NRV.
Oversize connections provide flexibility in use.
What you see is what you get ?
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How about it ?
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| Straightway flare version without union | |||||||
Valve type | Connection type | Connection | Pressure drop across valve 2) | Kv value 3) | Code No. | |||
inch | mm | bar | psi | m³/h | ||||
NRV 6 | straightway-flare | 1/4 | 6 | 0.07 | 1.01 | 0.56 | 020-1040 | |
NRV 10 | straightway-flare | 3/8 | 10 | 0.07 | 1.01 | 1.2 | 020-1041 | |
NRV 12 | straightway-flare | 1/2 | 12 | 0.05 | 0.72 | 2.05 | 020-1042 | |
NRV 16 | straightway-flare | 5/8 | 16 | 0.05 | 0.72 | 3.6 | 020-1043 | |
NRV 19 | straightway-flare | 3/4 | 19 | 0.05 | 0.72 | 5.5 | 020-1044 | |
2) The minimum pressure at which the valve is completely open. The NRVH with a stronger spring is used in the discharge line from compressors connected in parallel. |
| Angleway solder ODF version | |||||||
Valve type | Connection type | Connection | Pressure drop across valve 2) | Kv value 3) | Code No. | |||
inch | mm | bar | psi | m³/h | ||||
NRV 22s | Angleway-solder | 7/8 | 22 | 0.04 | 0.58 | 8.5 | 020-1020 | |
NRVH 22s | Angleway-solder | 7/8 | 22 | 0.3 | 4.35 | 8.5 | 020-1032 | |
NRV 22s 1) | Angleway-solder | 9/8 | - | 0.04 | 0.58 | 8.5 | 020-1060 | |
Angleway-solder | - | 28 | 0.04 | 0.58 | 8.5 | 020-1055 | ||
NRVH 22s 1) | Angleway-solder | 9/8 | - | 0.3 | 4.35 | 8.5 | 020-1072 | |
Angleway-solder | - | 28 | 0.3 | 4.35 | 8.5 | 020-1067 | ||
NRV 28s | Angleway-solder | 9/8 | - | 0.04 | 0.58 | 16.5 | 020-1021 | |
Angleway-solder | - | 28 | 0.04 | 0.58 | 16.5 | 020-1025 | ||
NRVH 28s | Angleway-solder | 9/8 | - | 0.3 | 4.35 | 16.5 | 020-1029 | |
Angleway-solder | - | 28 | 0.3 | 4.35 | 16.5 | 020-1033 | ||
NRV 28s 1) | Angleway-solder | 11/8 | 35 | 0.04 | 0.58 | 16.5 | 020-1056 | |
NRVH 28s 1) | Angleway-solder | 11/8 | 35 | 0.3 | 4.35 | 16.5 | 020-1068 | |
NRV 35s | Angleway-solder | 11/8 | 35 | 0.04 | 0.58 | 29 | 020-1026 | |
NRVH 35s | Angleway-solder | 11/8 | 35 | 0.3 | 4.35 | 29 | 020-1034 | |
NRV 35s 1) | Angleway-solder | 13/8 | - | 0.04 | 0.58 | 29 | 020-1061 | |
Angleway-solder | - | 42 | 0.04 | 0.58 | 29 | 020-1027 | ||
NRVH 35s 1) | Angleway-solder | 13/8 | - | 0.3 | 4.35 | 29 | 020-1073 | |
Angleway-solder | - | 42 | 0.3 | 4.35 | 29 | 020-1035 | ||
1) Oversize connections. |
| Straightway solder ODF version | |||||||
Valve type | Connection type | Connection | Pressure drop across valve 2) | Kv value 3) | Code No. | |||
inch | mm | bar | psi | m³/h | ||||
NRV 6s | Straightway-solder | 1/4 | - | 0.07 | 1.01 | 0.56 | 020-1010 | |
Straightway-solder | - | 6 | 0.07 | 1.01 | 0.56 | 020-1014 | ||
NRV 6s 1) | Straightway-solder | 1/4 | - | 0.07 | 1.01 | 0.56 | 020-1057 | |
Straightway-solder | - | 6 | 0.07 | 1.01 | 0.56 | 020-1050 | ||
NRVH 6s 1) | Straightway-solder | 3/8 | - | 0.3 | 4.35 | 0.56 | 020-1069 | |
Straightway-solder | - | 10 | 0.3 | 4.35 | 0.56 | 020-1062 | ||
NRV 10s | Straightway-solder | 3/8 | - | 0.07 | 1.01 | 1.2 | 020-1011 | |
Straightway-solder | - | 10 | 0.07 | 1.01 | 1.2 | 020-1015 | ||
NRVH 10s | Straightway-solder | 1/2 | - | 0.3 | 4.35 | 1.2 | 020-1046 | |
Straightway-solder | - | 12 | 0.3 | 4.35 | 1.2 | 020-1036 | ||
NRV 10s 1) | Straightway-solder | 1/2 | - | 0.07 | 1.01 | 1.2 | 020-1058 | |
Straightway-solder | - | 12 | 0.07 | 1.01 | 1.2 | 020-1051 | ||
NRVH 10s 1) | Straightway-solder | 1/2 | - | 0.3 | 4.35 | 1.2 | 020-1070 | |
Straightway-solder | - | 12 | 0.3 | 4.35 | 1.2 | 020-1063 | ||
NRV 12s | Straightway-solder | 1/2 | - | 0.05 | 0.72 | 2.05 | 020-1012 | |
Straightway-solder | - | 12 | 0.05 | 0.72 | 2.05 | 020-1016 | ||
NRVH 12s | Straightway-solder | 1/2 | - | 0.3 | 4.35 | 2.05 | 020-1039 | |
Straightway-solder | - | 12 | 0.3 | 4.35 | 2.05 | 020-1037 | ||
NRV 12s 1) | Straightway-solder | 5/8 | 16 | 0.05 | 0.72 | 2.05 | 020-1052 | |
NRVH 12s 1) | Straightway-solder | 5/8 | 16 | 0.3 | 4.35 | 2.05 | 020-1064 | |
NRV 16s | Straightway-solder | 5/8 | 16 | 0.05 | 0.72 | 3.6 | 020-1018 | |
NRVH 16s | Straightway-solder | 5/8 | 16 | 0.3 | 4.35 | 3.6 | 020-1038 | |
NRV 16s 1) | Straightway-solder | - | 18 | 0.05 | 0.72 | 3.6 | 020-1053 | |
NRVH 16s 1) | Straightway-solder | - | 18 | 0.3 | 4.35 | 3.6 | 020-1065 | |
NRV 16s 1) | Straightway-solder | 3/4 | 19 | 0.05 | 0.72 | 3.6 | 020-1059 | |
NRVH 16s 1) | Straightway-solder | 3/4 | 19 | 0.3 | 4.35 | 3.6 | 020-1071 | |
NRV 19s | Straightway-solder | - | 18 | 0.05 | 0.72 | 5.5 | 020-1017 | |
NRVH 19s | Straightway-solder | - | 18 | 0.3 | 4.35 | 5.5 | 020-1008 | |
NRV 19s | Straightway-solder | 3/4 | 19 | 0.05 | 0.72 | 5.5 | 020-1019 | |
NRVH 19s | Straightway-solder | 3/4 | 19 | 0.3 | 4.35 | 5.5 | 020-1023 | |
NRV 19s 1) | Straightway-solder | 7/8 | 22 | 0.05 | 0.72 | 5.5 | 020-1054 | |
NRVH 19s 1) | Straightway-solder | 7/8 | 22 | 0.3 | 4.35 | 5.5 | 020-1066 | |
1) Oversize connections. 3)The Kv / Cv value is the flow of water in [m3/h – gal/min] at a pressure drop across valve of 1 bar / 14.5 psig. ρ = 1000 kg/m3- 2205 lbs/G. |
What can I get guarantee ?
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1.We are Professional factory to make semi-hermetic compressor and condensing unit more than 10 years.
2.We insist on innovation,purchasing the international quality materials,strong technique support,strictly control the production.
3.We firmly believe quality first,perfect production responsibility system.
4.We promise all Yemoo brand products,we supply 3 months new products guarantee replacement,12 months quality guarantee service.
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