Danfoss AFPA 2 PN 16 self-acting differential-pressure-relief actuator — setting 1.5–6 bar, 80 cm² diaphragm, valve DN 65–125 (003G5689) — Datasheet

Danfoss AFPA 2 PN 16 — a self-acting differential-pressure-relief controller (surplus differential-pressure / overflow controller). It opens the matching globe valve body via its rolling-diaphragm actuator when the differential pressure across the controlled section exceeds the spring setting, discharging surplus flow through a bypass to hold the differential pressure at the set maximum. The actuator carries the diaphragm and setting spring only; it combines with a Danfoss VFG 2 / VFGS 2 / VFU 2 globe valve body (ordered separately) to form a complete self-acting controller for district heating and district cooling circuits. Actuator diaphragm area 80 cm²; setting 1.5–6 bar; suits valve bodies DN 65–125. Media temperature 2 °C to 150 °C; maximum operating pressure 16 bar. Actuator housing Steel, mat. 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced). Medium: district heating/cooling circulation water (glycolic water up to 30%). OEM designation "AFPA 2, PN 16, 1.5 bar - 6 bar, 80 cm²". OEM P/N 003G5689. Technical data quoted verbatim from store.danfoss.com (code 003G5689). 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced); Standard size: AFPA 2; Pressure rating: PN 16; Temperature range: 2 °C to 150 °C; HS code: 8481.90. Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants. No.

AFPA 2 is the self-acting actuator of the Danfoss AF range; it combines with a Danfoss VFG 2 / VFGS 2 / VFU 2 globe valve body to build a complete controller. Select by pressure class (PN 16), required setting range (1.5–6 bar), actuator size (80 cm²) and the valve-body size range (DN 65–125). For plain pressure relief use AFA; for differential-pressure control (constant, not relief) use AFP; for pressure reduction use AFD. AFPA mounts in a bypass line. Confirm actuator size, setting range and matching valve body against the AF-range data sheet before ordering.

Code number	003G5689
Type	AFPA 2
Product group	Actuators - Pressure Flow
Gross weight	12.371 Kilogram
Net weight	10 Kilogram
Volume	52.746 Liter
Actuator diaphragm material	EPDM (Rolling, fibre enforced)
Actuator size [cm²]	80 cm²
Application	District heating and cooling
Body material	Steel, mat. No. 1.0345, zinc plated
China RoHS compliance	Out of scope
Contains batteries	No
Description	Differential pressure relief actuator
Diameter [mm] [Max]	125 mm
Diameter [mm] [Min]	65 mm
Differential pressure setting [bar] [Max]	6 bar
Differential pressure setting [bar] [Min]	1.5 bar
EU RoHS compliance	Out of scope
Flow control	No
Flow limitation	No
Function	Diff. press. relief controller
Media pH [Max]	10
Media pH [Min]	7
Media temperature [°C] [Max]	150 °C
Media temperature [°C] [Min]	2 °C
Medium alternative	Glycolic water up to 30%
Mounting version	Bypass
Operating pressure [bar] [Max]	16 bar
Permissible media	District heating/cooling circulation water
Pressure class	PN 16
Pressure controller	Differential pressure relief controller
Pressure nominal [bar]	16 bar
REACH Candidate List substances	Lead (CAS no. 7439-92-1)
Setting Type	Adjustable
EAN	5715162292587
HS code	8481.90
Nominal diameter	DN65

Danfoss AFPA 2 PN 16 self-acting differential-pressure-relief actuator — setting 1.5–6 bar, 80 cm² diaphragm, valve DN 65–125 (003G5689)

Technical Specifications

Properties

Compatibility

Attached Documents

Material	Actuator housing Steel, mat. No. 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced)
Pressure rating	PN 16
Temperature range	2 °C to 150 °C
Standard size	AFPA 2
MOQ	1