Danfoss SAVD safety pressure reduction controller, PN 25, DN 15, Kvs 4 m³/h, 1 – 5 bar setting, external thread G 3/4 A
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Product Description
Danfoss SAVD (003H6693) — self-acting safety pressure reduction controller, PN 25, DN 15, for district heating and central heating systems. The SAVD is a safety pressure reduction controller that needs no external power or control signal; the setpoint is set on the actuator spring and the reduced/relieved pressure is sensed through an impulse line to the control diaphragm. It is normally open and closes progressively as the downstream (outlet) pressure rises, holding the reduced pressure at or below the setpoint to protect equipment against over-pressure. Pressure setting range 1 – 5 bar adjustable; Kvs 4 m³/h; maximum differential-pressure range 20 bar; media temperature 2–150 °C; cavitation factor z ≥ 0.6; seat leakage 0.02 % Kvs (IEC 60534). Valve body Red bronze CuSn5ZnPb (Rg5); valve cone dezincing-free brass CuZn36Pb2As; seat stainless steel 1.4571; control diaphragm EPDM. External-thread connection G 3/4 A (ISO 228/1) via tailpieces (tailpiece/union-nut set ordered separately). Media: district heating/cooling circulation water (glycolic water up to 30%), pH 7–10. Mounting version Free; stem position Normally open. OEM P/N 003H6693. EAN 5702421542149. Technical data quoted verbatim from store.danfoss.com (code 003H6693).
Technical Specifications
- Code number
- 003H6693
- Type
- SAVD
- Product group
- Pressure and flow controllers (safety pressure controller)
- Function
- Self-acting safety pressure reduction controller (SAV) — normally open, closes on rising downstream pressure to hold a limited reduced (outlet) pressure
- Valve size
- DN 15
- Pressure class
- PN 25
- Connection
- External thread G 3/4 A (ISO 228/1), via tailpieces
- Kvs value
- 4 m³/h
- Pressure setting range
- 1 – 5 bar (adjustable)
- Max. differential pressure range
- 20 bar
- Media temperature
- 2 – 150 °C
- Media pH
- 7 – 10
- Cavitation factor z
- ≥ 0.6
- Seat leakage rate
- 0.02 % Kvs (IEC 60534)
- Mounting version
- Free
- Stem position
- Normally open
- Number of ports
- 2
- Permissible media
- District heating/cooling circulation water (glycolic water up to 30%)
- Valve body material
- Red bronze CuSn5ZnPb (Rg5)
- Valve cone material
- Dezincing free brass CuZn36Pb2As
- Valve seat material
- Stainless steel, mat. No. 1.4571
- Actuator diaphragm
- EPDM
- EU RoHS compliance
- Yes with exemptions (6(c))
- REACH Candidate List substance
- Lead (CAS no. 7439-92-1)
- China RoHS
- Out of scope
- Net weight
- 5.471 kg
- Gross weight
- 5.471 kg
- EAN
- 5702421542149
- HS code
- 8481.80
Standards & Compliance
- Material
- Valve body Red bronze CuSn5ZnPb (Rg5); valve cone dezincing-free brass CuZn36Pb2As; seat stainless steel, mat. No. 1.4571; control diaphragm + DP sealing EPDM
- Pressure Rating
- PN 25 (max. differential-pressure range 20 bar)
- Temperature Range
- 2 to 150 °C (district heating/cooling water); glycolic water up to 30%
- HS Code
- 8481.80
Compatibility & Fitment
Danfoss SAVD for DN 15 district-heating/central-heating circuits at PN 25 where automatic over-pressure protection is required by limiting the reduced downstream pressure. Set the reduction setpoint within 1 – 5 bar; for a different band use the higher-range SAVD. Size the valve by the design flow against Kvs 4 m³/h. Confirm the connection (External thread G 3/4 A (ISO 228/1), via tailpieces) and pressure class (PN 25) match the pipework; order the matching tailpiece/union-nut set and impulse tube separately. Maximum differential-pressure range 20 bar, media temperature up to 150 °C. For pressure RELIEF use the SAVA; for combined differential-pressure and flow control use the AVPQ.
Product Documentation
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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: 2026-08-24. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 003H6693?
- 003H6693 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 003H6693.
- What is the HS code for 003H6693?
- The customs tariff (HS) code for 003H6693 is 8481.80.
- Who manufactures 003H6693?
- 003H6693 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003H6693?
- Yes — the 003H6693 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003H6693?
- The minimum order quantity is 1.
- Is 003H6693 available?
- Yes — 003H6693 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).