Danfoss AVP-F differential pressure controller, PN 25, DN 25, kVS 8 m³/h, Δp 0.2 bar fixed, external thread G 1 1/4 A (003H6303)

Danfoss AVP-F (003H6303) — self-acting differential pressure controller, PN 25, DN 25, for district heating and central heating systems. The AVP-F is the fixed-setpoint version of the AVP: the differential pressure is factory-preset and sealed (no adjustment handle), holding a constant differential pressure across the controlled circuit so that connected control valves keep their authority. Unlike the AVPB, the AVP-F is a differential-pressure controller only (no integrated flow limiter). kVS 8 m³/h; fixed differential-pressure setting 0.2 bar (factory-preset, sealed). Maximum differential pressure 20 bar; medium temperature 2–150 °C; leakage 0.02% of kVS (IEC 534). Valve body red bronze CuSn5ZnPb (Rg5), valve seat stainless steel 1.4571, valve cone dezincing free brass CuZn36Pb2As, control diaphragm EPDM. Connection external thread G 1 1/4 A (ISO 228/1), via tailpieces (ordered separately). Media: circulation water / glycolic water up to 30% (pH 7–10). OEM P/N 003H6303, EAN 5702421538425. Technical data quoted verbatim from the Danfoss AVP PN 25 (VD.55.W6.02) data sheet and store.danfoss.com (code 003H6303). differential pressure 20 bar); Temperature range: 2 – 150 °C (medium); HS code: 8481.80. Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants.

Code number

003H6303

Type

AVP-F

Product group

Pressure and flow controllers

Description

Self-acting differential pressure controller (district heating), fixed setting, return mounting

Valve size

DN 25

Pressure class

PN 25

kVS value

8 m³/h

Connection

external thread G 1 1/4 A (ISO 228/1)

Differential pressure setting

0.2 bar (fixed)

Max. differential pressure

20 bar

Medium

Circulation water / glycolic water up to 30% (pH 7–10)

Medium temperature

2 – 150 °C

Leakage (IEC 534)

0.02% of kVS

Mounting version

Return

Stem position

Normally open

Valve body

Red bronze CuSn5ZnPb (Rg5)

Valve seat

Stainless steel, mat. No. 1.4571

Valve cone

Dezincing free brass CuZn36Pb2As

Control diaphragm / sealing

EPDM

EU RoHS compliance

Out of scope

Net weight

2.944 Kilogram

Gross weight

2.944 Kilogram

Packed volume

6.136 Liter

EAN

5702421538425

HS code

8481.80

Material

Valve body red bronze CuSn5ZnPb (Rg5); valve seat stainless steel 1.4571; valve cone dezincing free brass CuZn36Pb2As; control diaphragm EPDM

Thread Standard

ISO 228/1

Pressure Rating

PN 25 (max. differential pressure 20 bar)

Temperature Range

2 – 150 °C (medium)

HS Code

8481.80