Danfoss AVPA differential pressure relief controller, PN 25, DN 40, 0.2–1 bar adjustable, Kvs 20 m³/h, flange
Pricing
Request a quote
We reply within 24 hours
Product Description
Danfoss AVPA (003H6609) — self-acting differential pressure relief controller, PN 25, DN 40, for district heating and cooling systems. The AVPA is a self-acting differential pressure relief controller; it is normally closed and opens on rising differential pressure, relieving (limiting) the differential pressure across the controlled circuit. It has a control valve, an actuator with one control diaphragm and a spring for the differential-pressure setting. Differential-pressure setting 0.2–1 bar adjustable; Kvs 20 m³/h. Maximum differential-pressure range 16 bar; media temperature 2–150 °C; cavitation factor z ≥ 0.6; seat leakage 0.05 % Kvs (IEC 60534). Valve body Ductile iron EN-GJS-400-18-LT (GGG 40.3); valve cone Dezincing free brass CuZn36Pb2As; seat Stainless steel, mat. 1.4571; control diaphragm and DP sealing EPDM. Connection Flange, PN 25. Mounting version Bypass. Permissible media: District heating/cooling circulation water (glycolic water up to 30%). OEM P/N 003H6609. Technical data quoted verbatim from store.danfoss.com (code 003H6609). 1.4571; control diaphragm and DP sealing EPDM; Pressure rating: PN 25 (max. differential-pressure range 16 bar); Temperature range: 2 to 150 °C (district heating/cooling water); HS code: 8481.80. Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants.
Technical Specifications
- Code number
- 003H6609
- Type
- AVPA
- Product group
- Pressure and flow controllers (differential pressure relief controller)
- Function
- Self-acting differential pressure relief controller (opens on rising differential pressure)
- Valve size
- DN 40
- Pressure class
- PN 25
- Connection
- Flange, PN 25
- Kvs value
- 20 m³/h
- Differential-pressure setting
- 0.2 - 1 bar (adjustable, factory range)
- Max. differential pressure range
- 16 bar
- Media temperature
- 2 - 150 °C
- Cavitation factor z
- ≥ 0.6
- Seat leakage rate
- 0.05 % Kvs (IEC 60534)
- Mounting version
- Bypass
- Permissible media
- District heating/cooling circulation water (Glycolic water up to 30%)
- Valve body material
- Ductile iron EN-GJS-400-18-LT (GGG 40.3)
- Valve cone material
- Dezincing free brass CuZn36Pb2As
- Valve seat material
- Stainless steel, mat. No. 1.4571
- Diaphragm / DP sealing
- EPDM
- EU RoHS compliance
- Out of scope
- REACH Candidate List substance
- Lead (CAS no. 7439-92-1)
- China RoHS
- Out of scope
- Net weight
- 12.545 kg
- Gross weight
- 12.545 kg
- EAN
- 5702421541296
Standards & Compliance
- Material
- Valve body Ductile iron EN-GJS-400-18-LT (GGG 40.3); valve cone Dezincing free brass CuZn36Pb2As; valve seat Stainless steel, mat. No. 1.4571; control diaphragm and DP sealing EPDM
- Pressure Rating
- PN 25 (max. differential-pressure range 16 bar)
- Temperature Range
- 2 to 150 °C (district heating/cooling water)
- HS Code
- 8481.80
Compatibility & Fitment
Danfoss AVPA for DN 40 district-heating/cooling circuits at PN 25. Set the differential-pressure setpoint within 0.2–1 bar. Confirm the connection (Flange, PN 25) and pressure class (PN 25) match the pipework; order the matching tailpiece/union-nut set and impulse tube separately. Maximum differential-pressure range 16 bar, media temperature up to 150 °C.
Product Documentation
More from Danfoss
Danfoss
Danfoss AVPA differential pressure relief controller, PN 25, DN 50, 0.2–1 bar adjustable, Kvs 25 m³/h, flange
003H6610
Danfoss
Danfoss AVPA differential pressure relief controller, PN 25, DN 32, 0.3–2 bar adjustable, Kvs 12.5 m³/h, flange
003H6611
Danfoss
Danfoss AVPA differential pressure relief controller, PN 25, DN 40, 0.3–2 bar adjustable, Kvs 20 m³/h, flange
003H6612
Danfoss
Danfoss AVPA differential pressure relief controller, PN 25, DN 50, 0.3–2 bar adjustable, Kvs 25 m³/h, flange
003H6613
Danfoss
Danfoss AVA pressure relief controller, PN 25, DN 15, 1–4.5 bar adjustable, Kvs 4 m³/h, external thread G ¾ A
003H6614
Danfoss
Danfoss AVA pressure relief controller, PN 25, DN 20, 1–4.5 bar adjustable, Kvs 6.3 m³/h, external thread G 1 A
003H6615
Danfoss
Danfoss AVA pressure relief controller, PN 25, DN 25, 1–4.5 bar adjustable, Kvs 8 m³/h, external thread G 1¼ A
003H6616
Danfoss
Danfoss AVA pressure relief controller, PN 25, DN 15, 3–11 bar adjustable, Kvs 4 m³/h, external thread G ¾ A
003H6620
Technical guides
- Flange Finder — EN 1092-1 PN6 to PN40 and ASME B16.5 Class 150/300 by DN, Pressure Rating and Type (Weld Neck, Slip-On, Blind, Plate)
- 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: 2026-08-29. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 003H6609?
- 003H6609 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 003H6609.
- What is the HS code for 003H6609?
- The customs tariff (HS) code for 003H6609 is 8481.80.
- Who manufactures 003H6609?
- 003H6609 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003H6609?
- Yes — the 003H6609 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003H6609?
- The minimum order quantity is 1.
- Is 003H6609 available?
- Yes — 003H6609 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).