Product Description
Danfoss HRE 4 4-way rotary mixing valve body (OEM designation "HRE 4 PN6 20/6.3 rotary 4-way Rp3/4"). A rotating-slide 4-way valve for mixing or diverting service in heating and district-heating circuits — the slide is turned through 90° by a Danfoss AMB rotary actuator (ordered separately) or by the manual handle. Valve size DN 20; PN 6; Kvs 6.3 m³/h m³/h; Internal thread connection (Rp 3/4); S characteristic flow characteristic; operating torque 5 N-m. Body Grey cast iron EN-GJL-250 (GG-25); cone DZR brass CuZn36Pb2AS (CW 602N); slide shoe DZR brass CuZn36Pb2AS (CW 602N); stuffing-box seal EPDM; port leakage 1.5 % Kvs. Maximum closing differential pressure 1 bar (mixing) / 1 bar (diverting). Media District heating/cooling circulation water — alternative Glycolic water up to 50%, 2 °C to 110 °C. OEM P/N 065Z0423. EAN 5710104033402. Technical data quoted verbatim from store.danfoss.com (code 065Z0423).
Technical Specifications
- Code number
- 065Z0423
- Type
- HRE 4
- Product group
- Motorized control valves
- Gross weight
- 1.343 Kilogram
- Net weight
- 1.3 Kilogram
- Volume
- 2.14 Liter
- Application
- Heating
- Closing differential pressure (diverting) [bar] [Max]
- 1 bar
- Closing differential pressure (mixing) [bar] [Max]
- 1 bar
- Connection size
- Rp 3/4
- Connection types
- Internal thread
- Description
- HRE 4 PN6 20/6.3 rotary 4-way Rp3/4
- Diameter [mm]
- 20 mm
- Flow characteristic
- S characteristic
- Function
- Mixing valve
- Kvs values [m³/h]
- 6.3 m³/h
- Leakage through port max. [% Kvs]
- 1.5
- Media pH [Max]
- 10
- Media pH [Min]
- 7
- Media temperature [°C] [Max]
- 110 °C
- Media temperature [°C] [Min]
- 2 °C
- Medium alternative
- Glycolic water up to 50%
- Mounting version
- Flow
- Number of ports
- 4
- Operating torque [Nm]
- 5 N-m
- Permissible media
- District heating/cooling circulation water
- Pressure class
- PN 6
- Pressure nominal [bar]
- 6 bar
- Slide shoe material
- DZR brass CuZn36Pb2AS (CW 602N)
- Stuffing box sealing material
- EPDM
- Valve body material
- Grey cast iron EN-GJL-250 (GG-25)
- Valve cone material
- DZR brass CuZn36Pb2AS (CW 602N)
- Valve size
- DN 20
- EAN
- 5710104033402
- HS code
- 8481.80
Standards & Compliance
- Size / Series
- HRE 4
- Material
- Grey cast iron EN-GJL-250 (GG-25)
- Thread Standard
- Rp 3/4
- Pressure Rating
- PN 6
- Temperature Range
- 2 °C to 110 °C
- HS Code
- 8481.80
Compatibility & Fitment
Rotary 4-way mixing valve for weather-compensated heating and cooling circuits. Turn the threaded body with a Danfoss AMB rotary actuator (ordered separately) or the manual handle. Confirm valve size (DN 20), Kvs (6.3 m³/h m³/h), PN 6 and thread size Rp 3/4 against the HRB/HRE/HFE data sheet before ordering; the actuator, connection set and stuffing-box service parts are ordered separately (065Z0439-0461).
Product Documentation
More from Danfoss
Danfoss
Danfoss HRE 4 rotary 4-Way mixing valve body DN 25 Kvs 10 m³/h PN 6 Rp 1
065Z0424
Danfoss
Danfoss HRE 4 rotary 4-Way mixing valve body DN 32 Kvs 16 m³/h PN 6 Rp 1 1/4
065Z0425
Danfoss
Danfoss HRE 4 rotary 4-Way mixing valve body DN 40 Kvs 25 m³/h PN 6 Rp 1 1/2
065Z0426
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Danfoss HRE 4 rotary 4-Way mixing valve body DN 50 Kvs 40 m³/h PN 6 Rp 2
065Z0427
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Danfoss HFE 3 rotary 3-Way mixing valve body DN 20 Kvs 12 m³/h PN 6 flanged
065Z0428
Danfoss
Danfoss HFE 3 rotary 3-Way mixing valve body DN 25 Kvs 18 m³/h PN 6 flanged
065Z0429
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Danfoss HFE 3 rotary 3-Way mixing valve body DN 32 Kvs 28 m³/h PN 6 flanged
065Z0430
Danfoss
Danfoss HFE 3 rotary 3-Way mixing valve body DN 40 Kvs 44 m³/h PN 6 flanged
065Z0431
Technical guides
- Cross-Referencing Danfoss Refrigeration Components by IMPA and OEM Code
- Danfoss Product Code Decoder — 003Z, 013G, 017B, 023U, 027L, 032F, 060G, 060H, 065B, 065Z, 068Z, 084H, 132F, 148B Series (Complete Reference)
- Danfoss Maneurop MTZ Reciprocating Compressors — Model Range, Voltage Codes and Replacement Guide
Catalogue entry last verified: 2026-08-24. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 065Z0423?
- 065Z0423 can be ordered from cballast.com as a Danfoss catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Danfoss product?
- The manufacturer part number is 065Z0423.
- What is the HS code for 065Z0423?
- The customs tariff (HS) code for 065Z0423 is 8481.80.
- Who manufactures 065Z0423?
- 065Z0423 is a Danfoss product in the Valves range.
- Is a datasheet available for 065Z0423?
- Yes — the 065Z0423 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 065Z0423?
- The minimum order quantity is 1.
- Is 065Z0423 available?
- Yes — 065Z0423 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).