Danfoss AVTB-RA Data sheet

Data sheet AVTB-RA, Reverse Acting

Thermostatic Water Valve

Applications:

AVTB-RA is a reverse acting thermostatic temperature controller used to regulate the water temperature where cooling is required. As the water temperature rises the thermostatic controller opens. Typical applications could involve:

• Injection molding machines

• Compressors

• Vacuum pumps

• Dry cleaning machines The thermostatic controller is a three part assembly consisting of the valve body, the thermostatic element and an adjustment assembly.

Features:

• For water

• Self-acting

• Opens on rising temperature

• Can be  tted in the supply or return

• Pressure range PN 16 (232 psi/16 bar)

Typical Application:

Ordering Information:

1. Oil Tank

2. Hydraulic machinery

3. Heat exchangers

4. Cooling water supply

5. Cooling water valve AVTB-RA

Code No. Model

003N6032RA

003N6252RA 190 (90) 77-150 (20-60)

003N6272RA 255 (125) 125-190 (50-90)

003N7032RA

003N7252RA 190 (90) 70-150 (20-60)

003N7272RA 255 (125) 125-190 (50-90)

003N8032RA

003N8252RA 190 (90) 70-150 (20-60)

003N8272RA 255 (125) 125-190 (50-90)

AVTB-RA 15 1/2"

AVTB-RA 20 3/4"

AVTB-RA 25 1"

Connection

(FNPT)

Capillary

Tube Length

6’ 6”

(2.0 m)

Max. Sensor

Temperature

°F (°C)

130 (55)

2.2

4.0

6.4

Temperature

Range

°F (°C)

32-85 (0-30)

32-86 (0-30)

VDBJD222 © Danfoss 12/12

Data sheet

AVTB-RA, Reverse Acting Thermostatic Water Valve

Ordering Information (Cont.):

Design:

1. Handle for temperature

setting

2. Spring housing

3. Setting spring

4. O-ring

5. Diaphragm

6. Spindle

7. Valve body

8. Valve cone

9. Bellows

10. Bellows stop

11. Pressure stem

12. Tem per at ure s en sor

13. Capillary tube gland

Accessories

Code No. Components

003N0056 Capillary tube gland, 3/4” NPT

003N0418 Gasket for capillary tube gland

AVTBWELL Sensor pocket, 3/4” NPT, brass

003N0053

Include gasket for capillary tube gland

Sensor pocket, 3/4” NPT, stainless steel

Spare Parts

Code No. Components

003N0075

003N0078

003N0062

Thermostatic element 32-85°F (0-30°C)

Thermostatic element 77-150°F (20-60°C)

Thermostatic element 125-190°F (50-90°C)

Cap. tube

length ft (m)

6’6

(2)

003N4006 For 1/2” Repair set: Two diaphragms,

003N4007 For 3/4”

003N4008 For 1”

two O-rings, one rubber cone, one tube of grease and eight valve cover crews

003N6100 1/2”

003N7100 3/4”

Brass AVT body and adjustment knob, less element

003N8100 1”

003N0520 AVT spare handle

Materials, parts in contact with water:

Valve body: Other metal parts: Diaphragms:

Ms 58, hot-pressed Ms 58 EPDM rubber (alt. NBR rubber for mineral oils)

Capillary tube gland: Valve cone: Valve seat: Sensor: Sensor pocket:

NBR rubber NBR rubber CR Ni steel Cu Ms 63

Speci cations:

Sizing:

Example

Cooling water valve for temperature regulation of a vacuum pump. Regulation of the oil temperature is required. The sensor to be placed horizontally.

Given

• Necessary cooling e ect at full load, 34,000 BTU/h

• Required oil temperature: 113°F (45°C)

• Cooling water pressure P

• Outlet pressure P3= 0 psi (0 bar)

• Cooling water temperature T1= 77°F (25°C)

• Oulet temperature T2= 84°F (29°C), (T= 7°F (4°C))

Supply temperature range:

Maximum working pressure:

Maximum di erential pressure:

Maximum test pressure:

= 28.5 psi (2 bar)

-13°F to 266°F (-25°C to 130°C) 232 psi (16 bar) 100 psi (7 bar) 365 psi (25 bar)

AVTB-RA

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