Singapore
English
Français
Deutsch
Português
Español
русский
한국어
العربية
Italiano
Indonesia
Schweiz
Polski
Nederlands
ישראל - עברית
Perzisch
ไทย
日本語
ኢትዮ-አማርኛ
Việt Nam
Kiswahili
Srpski
Ελληνικά
简体中文
繁體中文
Home HVACAuxiliary EquipmentValve4 Way Reversing Valve

SHF-4H-23U-P-A Sanhua 4 Way Reversing Valve

Brand:
Sanhua
Medium Temperature[℃ ]:
-30/120 ℃
Min. OPD[MPa]:
0.1 MPa
Max. OPD[MPa]:
3.1 MPa
Max. Working Pressure[MPa]:
4.2 MPa
Connections ØE,S,C [inch]:
5/8 inch
Connections ØD [inch]:
1/4 inch
Fixed/Inverter AC:
General
Series:
SHF
Model:
SHF 4
Order Number:
SHF-4H-23U-P-A
Description:
SHF-4H-23U-P-A, Sanhua, SHF Series, General, 1/4 inch, 5/8 inch, 4.2 MPa, 3.1 MPa, 0.1 MPa, -30/120 ℃
WhatsApp Inquire Now

Product parameters

Product attributes Attribute value Filter product attributes
Brand： Sanhua
Medium Temperature[℃ ]： -30/120 ℃
Min. OPD[MPa]： 0.1 MPa
Max. OPD[MPa]： 3.1 MPa
Max. Working Pressure[MPa]： 4.2 MPa
Connections ØE,S,C [inch]： 5/8 inch
Connections ØD [inch]： 1/4 inch
Fixed/Inverter AC： General
Series： SHF
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 SHF-4H-23U-P-A is a balanced small-sized pneumatic series 4-way reversing valve designed for medium-to-small precision control scenarios. Its core differentiation is the combination of a 4H nominal diameter and a U-P-A pneumatic interface with pressure feedback, balancing flow adaptability with control precision. It is suitable for medium-precision pneumatic actuators, medium-flow pneumatic circuits in automation equipment, and other applications requiring both flow capacity and pressure feedback.

Key Parameters:

  • Nominal diameter: 4H (compatible with DN4 piping)

  • Operating pressure: 0.3–0.9 MPa

  • Operating temperature: -5℃ to 80℃

  • Core differentiator: U-P-A pneumatic control interface (supports PNP-type pressure feedback signal)

  • Recommended flow: 0.15–1.2 m³/h (standard conditions)

Compared with the 3H ultra-micro model, the maximum flow is increased by 50% to suit medium-flow pneumatic scenarios. Compared with the 7H conventional small model, the volume is reduced by 30% for greater installation flexibility. Pressure feedback accuracy reaches ±0.015 MPa, meeting medium-to-small precision control requirements.

Technical Advantages & Innovations:

  • Optimized medium-flow channels reduce flow resistance coefficient to 0.22; pressure loss ≤0.08 MPa within the rated flow range, improving pneumatic system efficiency.

  • Built-in pressure feedback module responds ≤0.08 s, allowing real-time dynamic adjustment of airflow. Combined with pilot-operated switching, response time remains stable at 0.2 s, with action consistency deviation ≤0.03 s under ±0.1 MPa pressure fluctuation.

  • Valve body made of high-strength anodized aluminum alloy; surface hardness HV300+, enhancing resistance to pneumatic oil mist corrosion by 20% over the basic model.

Precise Industry Applications:

  • Medium-Precision Pneumatic Actuators: Controls switching of pneumatic grippers and push rods; pressure feedback adjusts actuation force in real time, protecting delicate components during assembly.

  • Medium-Flow Pneumatic Circuits in Automation Lines: Switches airflow in small pneumatic conveyors and sorting mechanisms; medium-flow compatibility meets production line cadence, and pressure feedback helps optimize operating parameters.

  • Medium-Precision Pneumatic Test Circuits: Switches media in pneumatic component testing; precise pressure feedback ensures repeatable and accurate measurements, suitable for batch testing of small-to-medium pneumatic components.

Installation & Adaptation Notes:

  • Confirm that the control system signal type is compatible with the U-P-A interface’s PNP pressure feedback mode to avoid transmission errors.

  • Use ferrule-type fittings for pneumatic connections to ensure sealing under medium flow and reduce interference with pressure feedback from leaks.

  • During commissioning, calibrate the pressure feedback module with the system controller; clean the pressure sensor probe regularly (recommended every 3 months) to prevent oil mist or debris from affecting accuracy.

  • Ensure ≥10 cm maintenance space around the valve body for easy future servicing and component replacement.

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

Message*
email*
address
File upload：
Attention: Upload file types:. jpg,. png,. jpg,. pdf,. doc,. docx.
Upload file sizes up to 2 MB

Product Category

SHF(L)-70-810-30 Sanhua 4 Way Reversing Valve

View details

SHF-35B-67G48 Sanhua Stainless Steel 4 Way Reversing Valve

View details

SHF(L)-350-1721 Sanhua 4 Way Reversing Valve

View details

SHF(L)-11H-45D1+L2 Sanhua 4 Way Reversing Valve

View details

SHF(L)-140-1214 Sanhua 4 Way Reversing Valve

View details

SHF-35B-79G48 Sanhua Stainless Steel 4 Way Reversing Valve

View details

SHF(L)-210-1321 Sanhua 4 Way Reversing Valve

View details

SHF(L)-175-1217 Sanhua 4 Way Reversing Valve

View details

SHF(G)-7H-34U-A Sanhua Stainless Steel 4 Way Reversing Valve

View details

SHF-3H-12U-P-A Sanhua 4 Way Reversing Valve

View details

Latest Articles

  • Exploring How Siemens SINAMICS Drives and ebm-papst Smart Fans are Reshaping the Factory of the Future
    This article will focus on two industry giants—Siemens SINAMICS drive series and ebmpapst smart fans—and delve into how they are defining the performance standards for modern industry.
  • The Importance of Industrial Communication Protocols in Drive Control Systems
    In today’s connected manufacturing environment, industrial communication protocols form the backbone of modern automation. They enable devices to exchange data, integrate seamlessly, and support remote monitoring across global networks. For industrial suppliers serving international customers, understanding and implementing mainstream communication standards is crucial for product compatibility and competitiveness.
  • Application and Advantages of AC Servo Drive Systems in Precision Manufacturing
    As manufacturing shifts toward high precision, high flexibility, and intelligent automation, traditional motor control methods are no longer sufficient. AC servo drive systems have emerged as the preferred choice for CNC machines, industrial robots, and automated assembly lines. This article provides an in-depth look at AC servo drive principles, selection criteria, and application advantages in precision control environments.
  • Industrial VFD Selection Guide – The Key to Efficient and Reliable Motor Control
    In modern industrial automation systems, the motor drive acts as the core power unit that determines the efficiency, stability, and energy consumption of the entire process. For international projects and engineering contractors, selecting the right Variable Frequency Drive (VFD) is crucial. This article provides a detailed and practical guide to understanding how VFDs work, how to select them correctly, and how to avoid common mistakes during implementation.
  • Intelligent Motor Control – Integration, Optimization, and Future Trends
    Intelligent motor control systems integrate sensors, controllers, frequency converters, and communication modules into a unified platform capable of real-time decision-making. This shift marks the transition from simple control to smart orchestration—where data, algorithms, and hardware collaborate to maximize performance and reliability.
  • The Core Role of Frequency Converters in Modern Motor Control Systems
    A frequency converter regulates the speed and torque of an AC motor by adjusting the frequency and voltage supplied to it. This not only enhances process control but also significantly reduces power consumption, equipment wear, and system maintenance costs.
  • Industrial Power System Stability and Energy-Saving Design Strategies
    In any industrial automation setup, power stability determines the overall reliability of control systems. A single voltage drop or surge can cause PLC malfunctions, sensor errors, or complete equipment shutdown. Therefore, designing a stable, efficient, and maintainable industrial power system is a fundamental task for electrical and automation engineers.
  • The Role and Optimization of Industrial Ethernet in Modern Automation Systems
    In the field of industrial automation, Industrial Ethernet has become a cornerstone of efficient communication, replacing many traditional fieldbus systems. Its high speed, flexibility, and openness make it an essential part of smart manufacturing and Industry 4.0. For engineers and plant operators, mastering how to deploy and optimize Industrial Ethernet networks is key to ensuring system stability, reducing downtime, and preparing for digital transformation.
  • ICX: Your Trusted HVAC, Industrial Control & Electronic Components Partner for Global Trade
    In today’s interconnected industrial supply chains, businesses worldwide need reliable access to high-quality HVAC (Heating, Ventilation, Air Conditioning) systems, industrial control equipment, and electronic components—with fast delivery, clear technical support, and flexible sourcing solutions. As an international trade partner operated by APAC HVAC TECH PTE. LTD. and headquartered in Singapore, ICX (icxsg.com) delivers exactly that.
  • Motor Protection Circuit Breaker: From Technical Principles to Selection and Maintenance
    As the "first line of defense," Motor Protection Circuit Breakers (MPCBs) can minimize fault losses through accurate monitoring and rapid circuit interruption. This article provides a comprehensive analysis of MPCBs, covering technical principles, selection methods, installation and maintenance, as well as industry trends, to offer systematic solutions for industrial users.
  • The Sequence Regulation of Low-Voltage Fuses and Low-Voltage Switches (Including Circuit Breakers) in Circuits
    The sequence of low-voltage fuses and low-voltage switches (including circuit breakers) in a circuit depends primarily on the core protection objectives of the circuit, the functional positioning of the equipment, and specific application scenarios; it is not absolutely fixed. The design of "connecting the fuse after the air switch" in machine tool distribution boxes is essentially an optimized protection logic tailored to the special power consumption needs of machine tool equipment, rather than a violation of general principles.
  • Vacuum Contactor: A Comprehensive Analysis of Principle, Structure, Application and Maintenance
    In modern industrial electrical systems, the vacuum contactor, as a key control and protection device, plays an extremely important role. With its unique arc-extinguishing method and many excellent performances, it is widely used in various power control scenarios to ensure the reliable operation of power systems. Next, let's deeply explore the working principle, structural composition, application fields and maintenance points of the vacuum contactor.​
  • Fan Procurement Guide: Professional Solutions from Selection to After-Sales Service
    As a professional engaged in overseas fan procurement, do you often encounter challenges such as difficult working condition adaptation, complex cost accounting, and delayed after-sales response during cross-border procurement? Combining 15 years of experience in serving the global fan market, we have sorted out professional solutions in three core dimensions—selection, cost, and after-sales service—based on the actual needs of overseas procurement, providing you with rigorous and practical procurement references.
  • Time Relay: The Core Component That Lets Circuits "Act with a Delay"
    Have you ever wondered why your home washing machine can "automatically power off after washing clothes"? Or why the factory assembly line can "feed materials first and then start stamping after 3 seconds"? Behind these scenarios of "doing things in a time sequence" lies a key component — the time relay.
  • Cookie
    Please read our Terms and Conditions and this Policy before accessing or using our Services. If you cannot agree with this Policy or the Terms and Conditions, please do not access or use our Services. If you are located in a jurisdiction outside the European Economic Area, by using our Services, you accept the Terms and Conditions and accept our privacy practices described in this Policy.
  • APAC HVAC TECH PTE. LTD Privacy Policy
    APAC HVAC TECH PTE. LTD. (hereinafter referred to as "we") is dedicated to safeguarding the privacy and security of your personal information. This Privacy Policy explains how we collect, use, and disclose your personal information when you use our website or purchase our import and export products.
  • Technical Analysis of PLC Programmable Logic Controller
    As a core control device in industrial automation, the PLC has evolved from an early "relay replacement" to an "industrial nerve center" integrating logic control, motion control, and process control. This article will elaborate on the technical architecture, core functions, application scenarios, and development trends of PLCs, systematically sorting out their technical principles and engineering practice points.
  • Frame Circuit Breaker: A Key Protection Device in Power Systems
    The Frame Circuit Breaker, also known as the air circuit breaker (ACB), usually has a steel frame structure, and all components are installed within this frame. It can switch on, carry, and break currents under normal circuit conditions, and also has the ability to switch on, carry for a certain time, and break currents under specified abnormal circuit conditions (such as overload, short circuit, ground fault, etc.)
  • A Comprehensive Analysis of Fan Technology: Principles, Classification, and Applications
    Fans, as key equipment that converts mechanical energy into gas energy, play a vital role in various fields such as industrial production, building ventilation, and energy development. This article will delve into the working principles, classification methods, performance parameters, design essentials, application fields, and future development trends of fans, presenting a comprehensive knowledge system of fan technology to readers.
Tel: +65 89039621
Email:Anthony@icxsg.com
Address: 46 EAST COAST ROAD #10-01 EASTGATE SINGAPORE (428766)
Home
Products Industries Manufacturers News About Us Contact Us
Industries
Battery Energy Storage System
Copyright © 2025 APAC HVAC TECH PTE. LTD All Rights Reserved
Privacy Policy Cookie

We use cookies to improve your online experience.

By continuing browsing this website, we assume you agree our use of cookies.

Agree Refuse