Danfoss AVTQ Self-Acting Temperature Controller DN 20, 45–60 °C, PN 16

Danfoss AVTQ (balancing valves), OEM order code 003L3526. Self-acting proportional temperature controller (main valve, pilot ordered separately) for domestic-hot-water and district-heating temperature regulation. Manufacturer description: AVTQ Main contr. DN20 excl.pilot c., I-p. connection/size DN 20, Kvs 3.2 m³/h, PN 16; max. differential pressure 4 bar, media/setting temperature 2 °C to 100 °C, body material Rg5 W. Specifications quoted verbatim from store.danfoss.com (code 003L3526). Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants. no 2.1096.01; Standard size: DN 20; Pressure rating: PN 16; max. differential pressure 4 bar; Temperature range: 2 °C to 100 °C; HS code: 8481.80.

Brand

Danfoss

Part number

003L3526

Code number

003L3526

Type

AVTQ

Product group

Temperature controllers

Description

AVTQ Main contr. DN20 excl.pilot c., I-p

Gross weight

2.92 Kilogram

Net weight

2.92 Kilogram

Ambient temperature [°C] [max]

70 °C

Ambient temperature [°C] [min]

0 °C

Capillary tube length [m]

1 m

Cavitation factor

0.6

Cone /seat sealing material

EPDM / Stainless steel 1.4571

Connection size

G 1 A

Connection standard

ISO 228/1

Connection types

External Thread

Control ratio

100:1

Diameter [mm]

20 mm

Differential pressure range [bar] [Max]

4 bar

Flow characteristic

Split

Function

Flow compensated temp. controller

Function VSP - P

No

Function VSP - Q

No

Function VSP - T

No

Impulse tube material

Copper mat. No 2.0090

Kvs values [m³/h]

3.2 m³/h

Leakage rate [% Kvs]

< 0.05

Media pH [Max]

10

Media pH [Min]

7

Media temperature [°C] [Max]

100 °C

Media temperature [°C] [Min]

2 °C

Media temperature at sensor [°C] [Max]

130 °C

Medium alternative

Glycolic water up to 30%

Medium alternative 2 DHW

Domestic hot water (clorine (cl) content max. 200 PPM)

Number of ports

2

Permissible media

District heating/cooling circulation water

Pressure class

PN 16

Pressure nominal [bar]

16 bar

Rection time close [sec]

4 "

Rection time open [sec]

4 "

Sensor connection

M22x1 / R3/4 ext thread acc. DIN 2999

Temperature sensor diameter [mm]

15 mm

Temperature sensor length [mm]

90 mm

Temperature sensor material

Copper mat. No 2.0090

Temperature setting range [°C] [Max]

60 °C

Temperature setting range [°C] [Min]

45 °C

Transport temperature [°C] [Max]

50 °C

Transport temperature [°C] [Min]

-20 °C

Valve body material

Rg5 W. no 2.1096.01

Valve cone material

EPDM rubber

Valve seat material

CrNi steel W. No 1.4404

Valve size

DN 20

HS code

8481.80 (taps, cocks, valves for pipes)

Size / Series

DN 20

Material

Rg5 W. no 2.1096.01

Pressure Rating

PN 16; max. differential pressure 4 bar

Temperature Range

2 °C to 100 °C

HS Code

8481.80