Danfoss AVPA, AVPA PN 16, AVPA PN 25 Data sheet

Data sheet

Differential pressure relief controller AVPA(PN16 and PN 25)

Description AVPA is a self-acting differential pressure relief

controller primarily for use in district heating systems. The controller is normally closed and opens on rising differential pressure.

The controller has a control valve, an actuator with one control diaphragm and handle for differential pressure setting.

Main data:

• DN 15-50

• kVS 4.0-25 m3/h

• PN 16, 25

• Setting range:

0.05-0.5 bar / 0.2-1.0 bar / 0.3-2.0 bar

• Temperature:

- Circulation water / glycolic water up to 30 %: 2 … 150 °C

• Connections:

- External thread (weld-on, thread and flange

AVPA (PN 16) AVPA (PN 25)

tailpieces)

- Flange

Ordering

Example: Differential pressure relief controller, DN 15, kVS 4.0; PN 25; setting range

0.2‑1.0 bar; T

‑ 1× AVPA DN 15 controller

Code no: 003H6 602

Option: ‑ 1× Weld‑on tailpieces

Code no: 003H6908

The controller will be delivered completely assembled, inclusive impulse tubes between valve and actuato r.

150 °C; ext. thread

max

AVPA PN 16 Controller

Picture

(mm)

15 4.0

20 6.3 G 1 A 003H6594 003H6597

25 8.0 G 1¼ A 003H6595 003H6598

AVPA PN 25 Controller

Picture

(mm)

15 4.0

20 6.3 G 1 A 003H6603 003H6606

25 8.0 G 1¼ A 003H6604 003H6607

32 12. 5 G 1¾ A 003H6599 -

40 16 G 2 A 003H6600 -

50 20 G 2½ A 003H6 601 -

32 12. 5

40 20 003H6609 003H6 612

50 25 0 03H6 610 003 H6613

(m3/h)

Connection

Cylin dr.

ext. thread acc. to

ISO 228/1

Connection

Cylin dr.

ext. thread acc. to

ISO 228/1

Flanges PN 25,

acc. to EN 1092-2

G ¾ A

∆p

setting

range

(bar)

0.05-0.5

∆p

setting

range

(bar)

0. 2-1.0

∆p

Code No.

003H6593

Code No.

003H6602

003H6608 003 H6 611

setting

range

(bar)

0. 2-1.0

∆p

setting

range

(bar)

0.3-2.0

Code No.

003H6596

Code No.

003H6605

Data sheet AVPA (PN 16 and PN 25)

Ordering (continuous) Accessories

Picture Type designation DN Connection Code No.

Weld-on tailpieces

External thread tailpieces

Flange tailpieces

003H6908

20 003H6909

25 00 3H6910

32 0 03 H69 11

40 00 3H6912

50 0 03H6 913

R ½” 003H6902

20 R ¾” 003H6903

25 R 1” 003H6904

Conical ex t. thread acc. to EN 10226 -1

32 R 1¼” 003H6905

40 R 1½ 065B2004

50 R 2 065B2005

Flanges PN 25, acc. to EN 1092-2

20 003H 6916

003H6915

25 0 03H6 917

Technical data

Service kits

Picture Type designation

Actuator with adjustable handle PN 16

Actuator with adjustable handle PN 25

Δp setting range

(bar)

0.05-0.5 003H6823

0. 2-1.0 003H6824

0. 2-1.0 003H6834

0.3-2.0 003H6835

Valve (for AVPA PN 16)

Nominal diameter DN 15 20 25

value m3/h 4.0 6.3 8.0

Cavitation factor z ≥ 0.6

Leakage acc. to standard IEC 534 % of k

Nominal pressure PN 25

Max. dierential pressure bar 12

Medium Circulation water / glycolic water up to 30%

Medium pH Min. 7, max. 10

Medium temperature

Connections

Materials

Valve body Red bronze CuSn5ZnPb (Rg5)

Valve seat Stainless steel, mat. No. 1.4571

Valve cone Dezincing free brass CuZn36Pb2As

Sealing EPDM

Pressure relieve system

valve External thread

tailpieces Weld-on, external thread and ange

C 2 … 150

≤ 0.2

Piston

Code No.

Actuator (for AVPA PN 16)

Typ e AVPA P N 16

Actuator size

Nominal pressure

Di. pressure setting ranges and spring colours

Materials

Actuator housing Zinc plated, DIN 1624, No. 1.0338

Diaphragm EPDM

Impulse tube Copper tube Ø6 × 1 mm

bar

0.05-0.5 0 .2-1.0

grey black

Data sheet AVPA (PN 16 and PN 25)

Technical data (continuous)

Valve (for AVPA PN 25)

Nominal diameter DN 15 20 25 32 40 50

value m3/h 4.0 6.3 8.0 12. 5 16/20 1)20/25

Cavitation factor z ≥ 0.6 ≥ 0.55 ≥ 0.5

Leakage acc. to standard IEC 534 % of k

Nominal pressure PN 25

Max. dierential pressure bar 20 16

Medium Circulation water / glycolic water up to 30 %

Medium pH Min. 7, max. 10

Medium temperature

valve Thread Thread and ange

Connections

Materials

Valve body

Valve seat Stainless steel, mat. No. 1.4571

Valve cone Dezincing free brass CuZn36Pb2As

Sealing EPDM

Pressure relieve system

Flange valve bod y

tailpieces

thread

ange -

C 2 …150

Red bronze CuSn5ZnPb (Rg5) Ductile iron

≤ 0.02 ≤ 0.05

Weld-on and external thread

Flange -

EN-GJS-400 -18-LT

(GGG 40.3)

Piston

Actuator (for AVPA PN 25)

Typ e AVPA PN 25

Actuator size cm

Nominal pressure PN 25

Diff. pressure setting ranges and spring colours

Materials

Actuator housing

Diaphragm EPDM

Impulse tube Copper tube Ø6 × 1 mm

Upper casing of diaphragm

Lower casing of diaphragm

bar

0. 2-1.0 0 .3-2. 0

yellow red

Stainless steel, mat. No.1.4301

Dezincing free brass CuZn36Pb2As

Application principle

Differential pressure control for a pump in bypass

Installation positions Up to medium temperature of 100 °C the

controllers can be installed in any position.

For higher temperatures the controllers have to be installed in horizontal pipes only, with a pressure actuator oriented downwards.

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