Danfoss AVPB-F differential pressure controller & flow limiter, PN 25, DN 15, fixed 0.5 bar (factory-preset, non-adj.), 0.07–1.6 m³/h, external thread G ¾ A

Danfoss AVPB-F (003H6461) — self-acting differential pressure control and flow limiter, PN 25, DN 15, for district heating and cooling systems. The AVPB-F closes on rising differential pressure or when the set maximum flow is exceeded, holding a stable differential pressure across the controlled circuit so connected control valves keep their authority. It combines a control valve, an adjustable flow restrictor and an actuator with one control diaphragm set to a fixed, factory-preset differential pressure (sealed, non-adjustable). Differential-pressure setting fixed 0.5 bar (factory-preset, non-adjustable); flow rate 0.07–1.6 m³/h; Kvs 2.5 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 and DP sealing EPDM. Connection External thread G ¾ A (ISO 228/1), via tailpieces. Media: district heating/cooling circulation water. OEM P/N 003H6461. Technical data quoted verbatim from store.danfoss.com (code 003H6461) and the Danfoss AVPB/AVPB-F (PN 16, 25) operating guide. differential-pressure range 20 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.

Code number

003H6461

Type

AVPB-F

Product group

Pressure and flow controllers (differential pressure control & flow limiter)

Function

Self-acting differential pressure control and flow limiter with a fixed, factory-preset differential-pressure setting (sealed, non-adjustable)

Valve size

DN 15

Pressure class

PN 25

Connection

External thread G ¾ A (ISO 228/1), via tailpieces

Kvs value

2.5 m³/h

Flow rate [m³/h]

0.07 - 1.6

Differential pressure setting

0.5 bar (fixed, factory preset)

Max. differential pressure range

20 bar

Media temperature

2 - 150 °C

Cavitation factor z

≥ 0.6

Seat leakage rate

0.02 % Kvs (IEC 60534)

Mounting version

Return

Permissible media

District heating/cooling circulation water

Valve body material

Red bronze CuSn5ZnPb (Rg5)

Valve cone material

Dezincing-free brass CuZn36Pb2As

Valve seat material

Stainless steel, mat. no. 1.4571

Diaphragm / DP sealing

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

2.69 kg

Gross weight

2.69 kg

EAN

5702421539804

Material

Valve body Red bronze CuSn5ZnPb (Rg5); valve cone dezincing-free brass CuZn36Pb2As; valve seat stainless steel 1.4571; control diaphragm and DP sealing EPDM

Pressure Rating

PN 25 (max. differential-pressure range 20 bar)

Temperature Range

2 to 150 °C (district heating/cooling water)

HS Code

8481.80