Danfoss USV-I DN 25 PN 16 manual static balancing valve, external thread
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Product Description
Danfoss USV-I DN 25 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 4 m³/h. Maximum differential pressure 150 kPa. Media temperature -20 °C to 120 °C. external thread connection (External thread ISO 228/1; G 1 ¼A). Brass body, PN 16. OEM designation "USV-I, DN 25, External thread ISO 228/1; G 1 ¼A". OEM P/N 003Z2138. EAN 5702420083582. Technical data quoted verbatim from store.danfoss.com (code 003Z2138).
Technical Specifications
- Code number
- 003Z2138
- Type
- USV-I
- Product group
- Manual balancing
- Description
- USV-I, DN 25, External thread ISO 228/1; G 1 ¼A
- Valve size
- DN 25
- Connection
- External thread ISO 228/1; G 1 ¼A
- Valve body material
- Brass
- Kvs value
- 4 m³/h
- Pressure class
- PN 16
- Max. differential pressure
- 150 kPa
- Media temperature range
- -20 °C to 120 °C
- Setting scale
- Yes
- Shut-off function
- Yes
- Drain function
- Yes
- Flow limitation
- Yes
- 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
- 0.76 kg
- Gross weight
- 0.76 kg
- Volume
- 1.077 L
- EAN
- 5702420083582
- HS code
- 8481.80
Standards & Compliance
- Size / Series
- USV-I
- Material
- Valve body Brass
- Thread Standard
- ISO 228/1
- Pressure Rating
- PN 16
- Temperature Range
- -20 °C to 120 °C
- HS Code
- 8481.80
Compatibility & Fitment
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 25) and pressure class (PN 16). Confirm code and connection before ordering.
Product Documentation
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Technical guides
- Balancing Valve Finder — Danfoss AB-QM, ASV-PV / ASV-M, USV-I / USV-M, MSV-BD / MSV-F2, IMI TA STAD / STAF, Frese by DN and Type
- 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)
Catalogue entry last verified: 2026-08-13. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 003Z2138?
- 003Z2138 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 003Z2138.
- What is the HS code for 003Z2138?
- The customs tariff (HS) code for 003Z2138 is 8481.80.
- Who manufactures 003Z2138?
- 003Z2138 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003Z2138?
- Yes — the 003Z2138 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003Z2138?
- The minimum order quantity is 1.
- Is 003Z2138 available?
- Yes — 003Z2138 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).