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Datasheet generated 2026-10-07
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Danfoss USV-I DN 40 PN 16 manual static balancing valve, internal thread (003Z2135)

Danfoss · HVAC & Refrigeration · Balancing Valves · Denmark · danfoss.com
Part Number
003Z2135  ·  HS 8481.80
Danfoss USV-I DN 40 PN 16 manual static balancing valve, internal thread (003Z2135)

Danfoss USV-I DN 40 PN 16 — manual (static) balancing valve for the risers and branches of hydronic heating and cooling systems; the presetting and isolating partner valve — sets the design flow (setting scale), shuts off and drains the circuit. Presetting fixes the branch flow so design flow is distributed correctly across the network. Kvs 10 m³/h. Maximum differential pressure 150 kPa. Media temperature -20 °C to 120 °C. internal thread connection (Internal thread ISO 7/1; Rp 1 ½). Brass body, PN 16. OEM designation "USV-I, DN 40, Internal thread ISO 7/1; Rp 1 ½". OEM P/N 003Z2135. EAN 5702420082516. Technical data quoted verbatim from store.danfoss.com (code 003Z2135).

Technical Specifications

Code number003Z2135
TypeUSV-I
Product groupManual balancing
DescriptionUSV-I, DN 40, Internal thread ISO 7/1; Rp 1 ½
Valve sizeDN 40
ConnectionInternal thread ISO 7/1; Rp 1 ½
Valve body materialBrass
Kvs value10 m³/h
Pressure classPN 16
Max. differential pressure150 kPa
Media temperature range-20 °C to 120 °C
Setting scaleYes
Shut-off functionYes
Drain functionYes
Flow limitationYes
Contains batteriesNo
EU RoHS complianceOut of scope
China RoHS complianceOut of scope
REACH Candidate List substancesLead (CAS no. 7439-92-1)
Net weight1.263 kg
Gross weight1.347 kg
Volume2.055 L
EAN5702420082516
HS code8481.80

Properties

MaterialValve body Brass
Pressure ratingPN 16
Temperature range-20 °C to 120 °C
Standard sizeUSV-I
Thread standardISO 7/1
MOQ1

Compatibility

USV-I is the presetting/isolating partner of the USV pair — fit it with a USV-M measuring valve on the branch. Read the setting scale to fix the design flow; the valve also shuts off and drains the circuit. Select by pipe size (DN 40) and pressure class (PN 16). Confirm code and connection before ordering.

Attached Documents