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Home HVACAuxiliary EquipmentValve4 Way Reversing Valve

SHF-20D-46G30 Sanhua Stainless Steel 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]:
3/4 inch
Connections ØD [inch]:
1/2 inch
Fixed/Inverter AC:
Inverter
Series:
SHF-G
Model:
SHF 20G
Order Number:
SHF-20D-46G30
Description:
SHF-20D-46G30, Sanhua, Stainless Steel 4 Way Reversing Valve, Inverter, 1/2 inch, 3/4 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]： 3/4 inch
Connections ØD [inch]： 1/2 inch
Fixed/Inverter AC： Inverter
Series： SHF-G
Products with the same attribute : 0
Show details

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-20D-46G30 Stainless Steel Four-Way Reversing Valve is a compact model within the 20D small-size series, specifically designed for general low-pressure applications. Its defining feature is the G30 interface, offering universal compatibility with the 46-series low-pressure optimization design. This valve is ideal for small residential systems, light industrial fluid loops, and other applications where cost efficiency and space savings are key considerations.

Key Specifications

This model belongs to the 20D series, with a working pressure range of 0.4–2.0 MPa and an operating temperature range of -5°C to 100°C.
It features a G30 interface (ISO 228 standard internal thread) suitable for DN15 pipelines, with a recommended flow rate of 4–10 m³/h.
Compared to the G31 interface model in the same series, the G30 version focuses on universal adaptability, offering a 15% cost reduction and 20% less installation space thanks to its compact form factor.

Technical Advantages & Innovations

  • Simplified pilot control structure balances reliability and cost efficiency, reducing failure rates by 40% compared to more complex designs.

  • Low-resistance internal flow channel design ensures efficient media transport under low-pressure conditions, with a flow resistance coefficient ≤0.25.

  • The lightweight stainless-steel body (only 0.6 kg) improves installation convenience by 30% while maintaining structural integrity and corrosion resistance.

Typical Application Scenarios

  • Compact residential water purification systems – Controls the switching between purified and raw water, optimized for household water pressure and hygiene standards.

  • Light industrial cooling loops – Suitable for fluid redirection in small motors, pumps, and compact heat exchangers, reducing internal space requirements.

  • Small-scale garden irrigation systems – Provides reliable water flow direction control with a universal interface compatible with multiple small-diameter pipe types.

Installation & Compatibility Notes

  • The valve can be manually tightened without specialized tools, simplifying on-site installation.

  • Avoid exposure to direct sunlight or high-temperature environments to prevent seal aging.

  • During commissioning, check switching flexibility under low pressure and regularly inspect seal integrity to maintain stable operation over time.

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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