Dunan DSF-34H 4-Way Air Conditioner Reversing Valve – 3/4" Inlet x 7/8" Outlet, 12.3 m³/h Flow, R410A/R32/R22 Compatible

Product Description

The Dunan DSF-34H model is a professional-grade 4-way reversing valve used in high-capacity split air conditioner and heat pump systems. With 3/4" inlet and 7/8" outlet connection sizes, this model reliably switches between heating and cooling modes by means of a pilot valve. Compatible with many refrigerants including R410A, R32 and R22, the DSF-34H offers superior performance especially in large-capacity applications.

Key Features

• High flow capacity: 12.3 m³/h
• Full compatibility with R410A, R32, R22, R407C, R134a, R290, R404A refrigerants
• Stable switching at low pressure differences (min. 0.3 MPa)
• Fluid temperature resistance: -30°C ~ +135°C
• Maximum capacity (R22): 116,000 BTU (≈ 34.0 kW)
• Holds international certifications such as CE, PED, UL, IECEx

Technical Specifications

• Model: DSF-34H (DSF-34-2262)
• Part Code: 240034041000
• Connection Sizes: Inlet: 3/4" – Outlet: 7/8"
• Flow (Kv): 12.3 m³/h
• Nominal Capacity (R410A): 32.2 ~ 45.5 kW
• Maximum Capacity (R22): 116,000 BTU ≈ 34.0 kW
• Operating Pressure: Max. 3.5 MPa
• Minimum Pressure Difference: 0.3 MPa
• Operating Temperature: Ambient: -30°C ~ +55°C | Fluid: -30°C ~ +135°C

Compatible Refrigerants

R410A, R32, R22, R407C, R134a, R290, R404A

Applications

• Commercial split air conditioner outdoor units
• High-capacity air source heat pumps
• Industrial and large-scale HVAC systems

Frequently Asked Questions

What does the Dunan DSF-34H 4-way valve do?

The DSF-34H is a 4-way reversing valve that switches between heating and cooling modes by means of a pilot valve in high-capacity split air conditioner and heat pump systems. It is used in commercial split air conditioner outdoor units, high-capacity air source heat pumps and industrial HVAC systems.

What are the original (OEM) part codes of the DSF-34H valve?

The equivalent/original codes of this product are DSF-34-2262 and 240034041000. You can verify compatibility by comparing with the code on your existing valve.

What are the connection sizes and flow of the DSF-34H valve?

The inlet connection is 3/4" and the outlet connection is 7/8", with a flow capacity (Kv) of 12.3 m³/h. The maximum operating pressure is 3.5 MPa and the minimum pressure difference is 0.3 MPa.

Which refrigerants is the DSF-34H compatible with and what is its capacity?

The DSF-34H is compatible with R410A, R32, R22, R407C, R134a, R290 and R404A. Its nominal capacity with R410A is 32.2 – 45.5 kW, and its maximum capacity with R22 is 116,000 BTU (≈ 34.0 kW).

As a service company/technician, can I make invoiced and regular purchases?

Yes, all our sales are invoiced. All orders, including those from service companies and technicians, are placed directly through our website.

How do I track my shipment after ordering?

Your shipment tracking number is sent to your e-mail and phone after the order; you can track its status in the “Where Is My Package?” section.

Can I return or exchange the product?

Yes. Under the Consumer Protection Law No. 6502, you have the right of withdrawal/return within 14 days of delivery. To avoid ordering the wrong model, we recommend that you verify compatibility before ordering. Details are on our “Delivery, Returns and Exchanges” page.

What payment and instalment options are available?

You can pay by bank/credit card and Tosla, and take advantage of instalment/credit options via Fibabanka and Akbank. Current options are listed on our “Payment Options” page.

Where is Yedepa located and how is delivery made?

Yedepa is an e-commerce site; orders are placed via yedepa.com and shipped to your address by courier from our warehouses across Turkey and from our contracted suppliers. Our head office is at Cennet Mah. 2. Yavuz Selim Cad. No:68/A, Kucukcekmece / Istanbul.