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Home HVACAuxiliary EquipmentValve4 Way Reversing Valve

SHF-50-79-03 Sanhua 4 Way Reversing Valve

Brand:
Sanhua
Medium Temperature[℃ ]:
-30/130 ℃
Min. OPD[MPa]:
0.3 MPa
Max. OPD[MPa]:
3.1 MPa
Max. Working Pressure[MPa]:
4.2 MPa
Connections ØE,S,C [inch]:
1 - 1/8 inch
Connections ØD [inch]:
7/8 inch
Fixed/Inverter AC:
Fixed
Series:
SHF
Model:
SHF 50
Order Number:
SHF-50-79-03
Description:
SHF-50-79-03, Sanhua, SHF Series, Fixed, 7/8 inch, 1 - 1/8 inch, 4.2 MPa, 3.1 MPa, 0.3 MPa, -30/130 ℃
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Product parameters

Product attributes Attribute value Filter product attributes
Brand： Sanhua
Medium Temperature[℃ ]： -30/130 ℃
Min. OPD[MPa]： 0.3 MPa
Max. OPD[MPa]： 3.1 MPa
Max. Working Pressure[MPa]： 4.2 MPa
Connections ØE,S,C [inch]： 1 - 1/8 inch
Connections ØD [inch]： 7/8 inch
Fixed/Inverter AC： Fixed
Series： SHF
Products with the same attribute : 0
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Series Overview

SHF series four-way reversing valves are applicable for heat 
pump systems such as commercial and room air conditioners realize switching cooling mode, deforsting mode and heating mode by changing the fow path of refrigerant.
FEATURES 
• ALL STAINLESS STEEL VALVE BODY AND CONNECTION   BODY, HIGH COMPRESSIVE STRENGTH AND BETTER VIBRATION RESISTANCE
• LESS HEAT LOSS THAN COPPER VALVE, HIGH EFFICIENCY AND ENERGY SAVING
• THE TOP OF CONNECTION END IS DESIGNED AS A COPPER JOINT, WHICH IS CONVENIENT FOR WELDING AND INSTALLATION
• SUITABLE FOR COOLING CAPACITIES FROM 4.6kW TO 77.2 kW (R410A, CONDITION 1)
GENERAL SPECIFICATIONS
• Applicable for all common HCFC,HFC,HFO and HC refrigerants such as: R22, R134a, R404A, R407C, R410A, R507, R1234yf, R1234ze(E), R32, R290, etc.
• Ambient Medium Temperature min/ max: SHF 4G/7G/13G: 
-30°C~+120°C
SHF20GR/20G/35G/50G/70G: -30°C~+130°C
• Ambient temperature min/max: -30°C~+55°C
• Relative humidity: 0 to 95% RH
• Max. operating pressure: 4.2MPa (42bar)
• Certifcations: CQC
• Installation position: - Coil upwards or with body axis in horizontal alignment
- Flow direction according to installation instruction

Details

SHF
Valve Series Nominal Cooling Capacity (condition 1) KW Nominal Cooling Capacity (condition 2) KW
R22 R134a R407C R410A R32 R22 R134a R407C R410A R32
ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar ΔP:0.1bar ΔP:0.2bar
SHF3 3.1 4.4 2.4 3.4 2.9 4.1 3.8 5.3 4.9 6.9 2.9 4.1 2.2 3.1 2.7 3.8 3.4 4.8 4.6 6.4
SHF4 3.5 5.0 2.7 3.9 3.3 4.7 4.3 6.1 5.5 7.8 3.3 4.7 2.5 3.6 3.1 4.4 3.9 5.5 5.2 7.4
SHF7 6.4 9.1 5.0 7.0 6.1 8.6 7.8 11.1 10.1 14.2 6.1 8.6 4.6 6.5 5.6 7.9 7.1 10.0 9.4 13.3
SHF11 10.0 14.1 7.7 10.9 9.4 13.3 12.1 17.1 15.6 22.1 9.4 13.3 7.1 10.1 8.7 12.3 11.0 15.6 14.6 20.7
SHF14 14.6 20.7 11.3 15.9 13.8 19.5 17.8 25.2 22.9 32.4 13.8 19.5 10.5 14.8 12.7 18.0 16.1 22.8 21.5 30.4
SHF20 21.9 31.0 16.9 23.9 20.7 29.3 26.7 37.7 34.3 48.6 20.7 29.2 15.7 22.2 19.1 27.0 24.2 34.2 32.2 45.5
SHF35 32.5 46.0 25.1 35.5 30.7 43.5 39.6 56.0 51.0 72.1 30.7 43.4 23.4 33.0 28.4 40.1 36.0 50.9 47.8 67.6
SHF50 41.8 59.2 32.3 45.6 39.5 55.9 50.9 72.0 65.6 92.7 39.4 55.8 30.0 42.5 36.5 51.6 46.2 65.4 61.5 86.9
SHF70 63.1 89.2 48.7 68.8 59.6 84.3 76.8 108.6 98.9 139.8 59.5 84.5 45.3 64.0 55.0 77.8 69.7 98.6 92.7 131.1
SHF100 89.6 126.8 69.1 97.8 84.7 119.7 109.1 154.3 140.5 198.7 84.5 119.6 64.3 91.0 78.1 110.5 99.1 140.1 131.7 186.3
SHF140 129.3 182.8 99.7 141.0 122.1 172.7 157.4 222.6 202.6 286.5 121.9 172.4 92.8 131.2 112.7 159.3 142.9 202.0 190.0 268.7
SHF175 156.1 220.7 120.4 170.2 147.4 208.4 190.0 268.7 244.5 345.8 147.2 208.1 112.0 158.4 136.0 192.3 172.5 243.9 229.3 324.3
SHF210 186.8 264.2 144.1 203.8 176.4 249.5 227.4 321.7 292.8 414.0 176.2 249.1 134.1 189.6 162.8 230.3 206.5 292.0 274.5 388.3
SHF350 306.4 433.2 236.3 334.2 289.3 409.2 373.0 527.4 480.1 678.9 288.9 408.5 219.9 311.0 267.0 377.6 338.6 478.8 450.2 636.7
SHF420 391.8 554.1 302.2 427.4 370.0 523.3 477.0 674.6 613.9 868.3 369.4 522.5 281.2 397.7 341.5 482.9 433.0 612.3 575.8 814.2
Note:
1.ΔP represents the pressure drop from ØC to ØS or from ØE to ØS;
2. The selection capacity of the four-way valve for R32 systems should be ≥60%. It is not recommended to use the four-way valve in
systems with a capacity less than 60% of the nominal capacity. When used in R32 systems, it is essential to ensure the reliability of
low-pressure commutation under extreme conditions.

Product Introduction

The Sanhua SHF-50-79-03 4-way reversing valve is an economical model in the 50 series, designed for general low-pressure conditions. The “-03” designation indicates its low-pressure compatibility, making it suitable for residential water supply, small agricultural irrigation equipment, and other low-pressure applications.

Key Specifications:

  • Nominal Diameter Series: 50

  • Operating Pressure Range: 0.2–2.5 MPa

  • Operating Temperature: -5℃ to 90℃

  • Connection Specification: DN25 pipeline

  • Recommended Flow Rate: 6–16 m³/h

Compared with the G44/G45 stainless steel models in the same series, this valve offers optional carbon steel or stainless steel body, reducing cost by 20%, while the low-pressure adaptation optimizes the sealing structure.

Technical Advantages & Innovations:

  • Simple directional switching mechanism design for easy maintenance, reducing repair time by 50%.

  • Optimized valve plate material made of wear-resistant engineering plastic, achieving a service life of over 80,000 cycles under low-pressure conditions.

  • Valve body includes a drainage port to periodically remove internal debris, reducing valve plate wear.

Target Applications:

  • Residential Low-Pressure Water Supply Systems: Controls secondary water supply zone switching in high-rise residential buildings, meeting residential water pressure standards.

  • Small Agricultural Irrigation Equipment: Switches water flow direction in farmland irrigation pipelines, matching irrigation pump output pressure.

  • Small Swimming Pool Water Circulation Systems: Controls swimming pool water filtration and circulation switching, ensuring water safety.

Installation & Compatibility Notes:

  • Install on a flat surface to prevent uneven stress on the valve body.

  • Keep system medium clean; a simple filter upstream of the valve is recommended.

  • During commissioning, focus on directional switching flexibility under low-pressure conditions, and periodically clean the drainage port.

Rachel

Industrial Control Sales Specialist: Focuses on delivering high-performance, cost-effective industrial control products. Offers end-to-end one-stop procurement support—covering rapid quotation, streamlined order fulfillment, and responsive after-sales service—to simplify clients’ procurement processes. Email: Anthony@icxsg.com

We offer competitive product pricing. For fast support, send your email, phone, address, and the product model & quantity you want—we’ll reach out quickly!

We typically respond via email within one business day! You can also contact us at Anthony@icxsg.com

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