Danfoss SAVA safety pressure relief controller, PN 25, DN 32, Kvs 12.5 m³/h, 1 – 4.5 bar setting, external thread G 1 3/4 A
Pricing
Request a quote
We reply within 24 hours
Product Description
Danfoss SAVA (003H6678) — self-acting safety pressure relief controller, PN 25, DN 32, for district heating and central heating systems. The SAVA is a safety pressure relief 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 in standby and opens (as a bypass) when the pressure upstream rises above the setpoint, discharging flow to relieve and limit the over-pressure; when the pressure falls back it re-closes. Pressure setting range 1 – 4.5 bar adjustable; Kvs 12.5 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 1.4571; control diaphragm EPDM. External-thread connection G 1 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 Bypass; stem position Normally closed. OEM P/N 003H6678. EAN 5702421541999. Technical data quoted verbatim from store.danfoss.com (code 003H6678).
Technical Specifications
- Code number
- 003H6678
- Type
- SAVA
- Product group
- Pressure and flow controllers (safety pressure controller)
- Function
- Self-acting safety pressure relief controller (SÜV) — normally closed, opens on rising pressure to relieve/limit over-pressure
- Valve size
- DN 32
- Pressure class
- PN 25
- Connection
- External thread G 1 3/4 A (ISO 228/1), via tailpieces
- Kvs value
- 12.5 m³/h
- Pressure setting range
- 1 – 4.5 bar (adjustable)
- Max. differential pressure range
- 16 bar
- Media temperature
- 2 – 150 °C
- Media pH
- 7 – 10
- Cavitation factor z
- ≥ 0.6
- Seat leakage rate
- 0.05 % Kvs (IEC 60534)
- Mounting version
- Bypass
- Stem position
- Normally closed
- Number of ports
- 2
- 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
- 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
- 8.294 kg
- Gross weight
- 8.294 kg
- EAN
- 5702421541999
- HS code
- 8481.80
Standards & Compliance
- Material
- Valve body Ductile iron EN-GJS-400-18-LT (GGG 40.3); 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 16 bar)
- Temperature Range
- 2 to 150 °C (district heating/cooling water); glycolic water up to 30%
- HS Code
- 8481.80
Compatibility & Fitment
Danfoss SAVA for DN 32 district-heating/central-heating circuits at PN 25 where automatic over-pressure protection is required by relieving (bypassing) excess pressure. Set the relief setpoint within 1 – 4.5 bar; for a different band use the higher-range SAVA. Size the valve by the design flow against Kvs 12.5 m³/h. Confirm the connection (External thread G 1 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 16 bar, media temperature up to 150 °C. For pressure REDUCTION use the SAVD; for combined differential-pressure and flow control use the AVPQ.
Product Documentation
More from Danfoss
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 40, Kvs 16 m³/h, 1 – 4.5 bar setting, external thread G 2 A
003H6679
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 50, Kvs 20 m³/h, 1 – 4.5 bar setting, external thread G 2 1/2 A
003H6680
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 15, Kvs 4 m³/h, 3 – 11 bar setting, external thread G 3/4 A
003H6681
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 20, Kvs 6.3 m³/h, 3 – 11 bar setting, external thread G 1 A
003H6682
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 25, Kvs 8 m³/h, 3 – 11 bar setting, external thread G 1 1/4 A
003H6683
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 32, Kvs 12.5 m³/h, 3 – 11 bar setting, external thread G 1 3/4 A
003H6684
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 40, Kvs 16 m³/h, 3 – 11 bar setting, external thread G 2 A
003H6685
Danfoss
Danfoss SAVA safety pressure relief controller, PN 25, DN 50, Kvs 20 m³/h, 3 – 11 bar setting, external thread G 2 1/2 A
003H6686
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 003H6678?
- 003H6678 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 003H6678.
- What is the HS code for 003H6678?
- The customs tariff (HS) code for 003H6678 is 8481.80.
- Who manufactures 003H6678?
- 003H6678 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003H6678?
- Yes — the 003H6678 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003H6678?
- The minimum order quantity is 1.
- Is 003H6678 available?
- Yes — 003H6678 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).