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Datasheet generated 2026-10-08
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Danfoss SAVA safety pressure-relief controller, PN 25, DN 50, kVS 20 m³/h, setting 2 – 7.5 bar, external thread G 2 1/2 A, bypass mounting (003H6965)

Danfoss · HVAC & Refrigeration · Balancing Valves · Denmark · danfoss.com
Part Number
003H6965  ·  HS 8481.80
Danfoss SAVA safety pressure-relief controller, PN 25, DN 50, kVS 20 m³/h, setting 2 – 7.5 bar, external thread G 2 1/2 A, bypass mounting (003H6965)

Danfoss SAVA (003H6965) — self-acting safety pressure-relief controller, PN 25, DN 50, bypass mounting, for district heating and central-heating circuits. The SAVA is a self-acting safety pressure-relief controller that requires no auxiliary energy: it opens on rising pressure to relieve the circuit, using a control valve and a spring-loaded actuator diaphragm. As a safety controller (SÜV pressure-relief) it provides the self-acting overpressure protection required for district-heating substations, independent of any electric control. kVS 20 m³/h; adjustable pressure setting range 2 – 7.5 bar; maximum differential pressure 16 bar. Medium temperature 2–150 °C; leakage 0.05% of kVS (IEC 534); Valve body ductile iron EN-GJS-400-18-LT (GGG 40.3), valve seat stainless steel 1.4571, valve cone dezincing free brass CuZn36Pb2As, actuator diaphragm EPDM. Connection external thread G 2 1/2 A (ISO 228/1). OEM P/N 003H6965, EAN 5710104031149. Technical data quoted verbatim from store.danfoss.com (code 003H6965).

Technical Specifications

Code number003H6965
TypeSAVA
FunctionSafety press. relief controller (SÜV)
Product groupPressure and flow controllers
DescriptionSelf-acting safety pressure-relief controller (district heating), adjustable setting, bypass mounting
Valve sizeDN 50
Pressure classPN 25
kVS value20 m³/h
Connectionexternal thread G 2 1/2 A (ISO 228/1)
Pressure setting range2 – 7.5 bar (adjustable)
Max. differential pressure16 bar
PN alternative (safety function VSP)PN 16
ApplicationDistrict Heating
MediumDistrict heating/cooling circulation water / glycolic water up to 30% (pH 7–10)
Medium temperature2 – 150 °C
Leakage (IEC 534)0.05% of kVS
Mounting versionBypass
Stem positionNormally closed
Valve bodyDuctile iron EN-GJS-400-18-LT (GGG 40.3)
Valve seatStainless steel, mat. No. 1.4571
Valve coneDezincing free brass CuZn36Pb2As
Actuator diaphragmEPDM
EU RoHS complianceYes with exemptions (6(c))
Net weight10.227 Kilogram
Gross weight10.227 Kilogram
Packed volume25.151 Liter
EAN5710104031149
HS code8481.80

Properties

MaterialValve body ductile iron EN-GJS-400-18-LT (GGG 40.3); valve seat stainless steel 1.4571; valve cone dezincing free brass CuZn36Pb2As; actuator diaphragm EPDM
Pressure ratingPN 25 (max. differential pressure 16 bar)
Temperature range2 – 150 °C (medium)
Thread standardISO 228/1
MOQ1

Compatibility

Danfoss SAVA for DN 50 district-heating circuits, PN 25, bypass mounting. Size by the design flow (kVS 20 m³/h) and set the relief setpoint within 2 – 7.5 bar. Confirm the connection (external thread G 2 1/2 A (ISO 228/1)) and pressure class (PN 25) against the pipework. Where the local code requires certified overpressure protection (SÜV/SAV), the SAVA provides it self-actingly. Genuine Danfoss part — specify order code 003H6965.

Attached Documents