Danfoss MTCV Version A DN 20 thermostatic circulation valve (KIWA)
Danfoss

Danfoss MTCV Version A DN 20 thermostatic circulation valve (KIWA)

Part number003Z0551Item numberCB-DANF-003Z0551EAN / GTIN5702421547250HS code8481.80
MaterialValve body Rg5 (bronze)KIWA
HVAC & Refrigeration
Balancing Valves
MOQ:1

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Product Description

Danfoss MTCV DN 20, Version A — self-acting multifunctional thermostatic circulation valve for automatic thermal balancing of domestic hot-water (DHW) return risers. It throttles the circulation flow as the return-water temperature rises toward the set point, keeping every riser at the required temperature and reducing pumping energy and Legionella risk. Bronze (Rg5) body, Internal thread ISO 7/1Rp ½, PN 10, Kvs 1.8 m³/h, factory setting 50 °C, temperature setting range 45 °C to 65 °C, media temperature max 100 °C. Approval: KIWA. OEM P/N 003Z0551. EAN 5702421547250. Technical data quoted verbatim from store.danfoss.com (code 003Z0551).

Technical Specifications

Code number
003Z0551
Type
MTCV
Product group
Hot water balancing
Description
MTCV DN 20, NL, A version, multifunctional thermostatic circulation valve
Version
A
Valve size
DN 20
Valve body material
Rg5
Connection types
Internal thread ISO 7/1Rp ½
Approval type
KIWA
Pressure class
PN 10
Kvs values [m³/h]
1.8 m³/h
Factory setting [°C]
50 °C
Temperature setting range [°C] [Min]
45 °C
Temperature setting range [°C] [Max]
65 °C
Media temperature [°C] [Max]
100 °C
Differential pressure over the valve [kPa] [Max]
100 KPa
Disinfection function
No
Contains batteries
No
EU RoHS compliance
Out of scope
China RoHS compliance
Out of scope
REACH Candidate List substances
Lead (CAS no. 7439-92-1)
Net weight
0.608 Kilogram
Gross weight
0.608 Kilogram
Volume
0.535 Liter
EAN
5702421547250

Standards & Compliance

Material
Valve body Rg5 (bronze)
Pressure Rating
PN 10
Temperature Range
45 °C to 65 °C (set-point); media max 100 °C
Classification / Approval
KIWA
HS Code
8481.80

Compatibility & Fitment

Danfoss MTCV DN 20 Version A. Version and DN determine setting range and Kvs; the approval type (KIWA) is the regional drinking-water certification — select the variant approved for the installation country. Disinfection/thermometer/actuator modules are ordered separately for the MTCV.

Not sure if it fits? Email sales@cballast.com with your equipment serial number or photos — we confirm fit before you order.

Product Documentation

Document preview: Danfoss 003Z0551 — OEM Product Page

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 003Z0551?
003Z0551 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 003Z0551.
What is the HS code for 003Z0551?
The customs tariff (HS) code for 003Z0551 is 8481.80.
Who manufactures 003Z0551?
003Z0551 is a Danfoss product in the HVAC & Refrigeration range.
Is a datasheet available for 003Z0551?
Yes — the 003Z0551 datasheet can be viewed and downloaded on this page.
What is the minimum order quantity for 003Z0551?
The minimum order quantity is 1.
Is 003Z0551 available?
Yes — 003Z0551 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).