Product Description
Danfoss HVZ 3 PN16 20/4 2-way seated valve with a flat-end connection, for heating and cooling circulation water including glycol mixtures up to 50% at 2-120 °C and up to 16 bar. Kvs 2.5 m³/h through the B-AB port with a logarithmic flow characteristic, DZR brass body and cone, EPDM stuffing-box seal, stainless steel stem. Normally closed A-AB with 5.5 mm stroke. Reference part number 065Z5421.
Technical Specifications
- Code number
- 065Z5421
- EAN
- 5702421526637
- Net weight
- 0.506 Kilogram
- Application
- Heating and cooling
- Application alternative VSP
- Hot water
- China RoHS exemption clause
- 7.3
- Connection size
- G 3/4
- Connection types
- External thread ISO 228/1
- Control ratio
- 50:1
- Description
- HVZ 3 PN16 20/4 2-way seated flat end
- Diameter [mm]
- 20 mm
- EU RoHS compliance
- Yes with exemptions
- Flow characteristic
- Logarithmic
- Function
- Mixing valve
- Kvs value (B-AB) [m³/h]
- 2.50 m³/h
- Kvs values [m³/h]
- 4.00 m³/h
- Leakage through port (B-AB) max. [% Kvs]
- 1.0
- Leakage through port max. [% Kvs]
- 0.05
- Medium alternative
- Glycolic water up to 50%
- Mounting version
- Free
- Number of ports
- 3
- Permissible media
- District heating/cooling circulation water
- PN alternative VSP
- 10
- Pressure nominal [bar]
- 16 bar
- Product group
- Other valves
- Product line
- Hydronic Balancing and Controls
- Product Type
- VZ 3
- Spindle position
- A-AB: Normally closed
- Stroke [mm]
- 5.50 mm
- Stuffing box sealing material
- EPDM
- Valve body material
- DZR brass CuZn36Pb2AS (CW 602N)
- Valve cone material
- DZR brass CuZn36Pb2AS (CW 602N)
- Valve seat material
- DZR brass CuZn36Pb2AS (CW 602N)
- Valve stem material
- Stainless steel
- Closing differential pressure (diverting) [bar]
- 1.0 bar
- Closing differential pressure (mixing) [bar]
- 2.5 bar
- Media pH
- 7 … 10
- Media temperature [°C]
- 2 °C … 120 °C
- Gross weight
- 0.506 Kilogram
- Volume
- 0.638 Liter
- Type
- VZ 3
Cross References
- EAN 5702421526637
Product Documentation
More from Danfoss
![Danfoss valve motor AME 140 — Supply voltage [V] AC 24, 5.50 mm](/images/products/danfoss-7b4c1696c252c9c4.jpg?w=400)
Danfoss
Danfoss valve motor AME 140 — Supply voltage [V] AC 24, 5.50 mm
082H8045
![Danfoss girmotor AMB 162 — [V] AC:230, 60 s/mm](/images/products/danfoss-7368605b54a02e90.jpg?w=400)
Danfoss
Danfoss girmotor AMB 162 — [V] AC:230, 60 s/mm
082H0222
Danfoss
Danfoss boiler thermostat ITD — 0/90GRC, Safety Thermostat 100GRC
099-1061
Danfoss
Danfoss Angle Adapter RA 2000
013G1350
Danfoss
Danfoss thermowell brass — R1/2" x L182MM, RAVK
013U0290
Danfoss
Danfoss pressure transmitter AKS 3050 — -1/25bar
060G1045
Danfoss
Danfoss pressure transmitter AKS 33 — -1/12bar
060G2101
Danfoss
Danfoss pressure transmitter AKS 33 — -1/34bar
060G2103
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: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 065Z5421?
- 065Z5421 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 065Z5421.
- Who manufactures 065Z5421?
- 065Z5421 is a Danfoss product in the Valves range.
- Is a datasheet available for 065Z5421?
- Yes — the 065Z5421 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 065Z5421?
- The minimum order quantity is 1.
- Is 065Z5421 available?
- Yes — 065Z5421 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).
- How do I get a price for 065Z5421?
- Request a quotation with the quote button on this page or by email to sales@cballast.com — we reply within 24 hours with price, availability and lead time.