Danfoss SAVD safety pressure reduction controller, PN 25, DN 40, Kvs 20 m³/h, 3 – 12 bar setting, flange

Danfoss SAVD (003H6709) — self-acting safety pressure reduction controller, PN 25, DN 40, 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 3 – 12 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 1.4571; control diaphragm EPDM. Flange connection, PN 25 (mating flanges, gaskets and bolts 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 003H6709. EAN 5702421542309. Technical data quoted verbatim from store.danfoss.com (code 003H6709).

Code number

003H6709

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 40

Pressure class

PN 25

Connection

Flange, PN 25

Kvs value

20 m³/h

Pressure setting range

3 – 12 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

Free

Stem position

Normally open

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

16.144 kg

Gross weight

16.144 kg

EAN

5702421542309

HS code

8481.80

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