Danfoss WVTS Data sheet

Data Sheet

Water regulating valves Type WVTS

Thermostatic operated water valve Opens on rising sensor temperature

Thermostatic operated water valve type WVTS is suitable for controlling the temperature of a ow of water or neutral brine.

WVTS opens on rising sensor temperature and is indirect servo operated thermostatic valve.

It is suitable for controlling temperature in industrial applications by regulating the quantity of cooling water or neutral brine that cools down the process.

The valves are self-acting, i.e. they operate without the supply of auxiliary energy such as electricity or compressed air.

The required temperature is maintained constant without unnecessary use of cooling water in cooling systems.

The operating economy and-eciency are maximized.

Features:

• Insensitive to dirt

• Insensitive to water pulsating pressure

• Proven reliable through decades

• Easy to service

• Built-in pilot lter

• Long lifetime

• High performance

• Very high capacity

• Both welding and thread connection anges

AI214786434421en-000602

Danfoss

16D71

Danfoss

16D61

Type

WVTS for neutral media

Operation

Servo-operated

Temperature range

0 – 30 °C

25 – 65 °C

50 – 90 °C

Max. sensor temperature

57 °C

90 °C

125 °C

Features

Description

Media

Fresh water, neutral brine

Media temperature range

- 25 – 90 °C

Permissible working pressure PB

10 bar

Max. test pressure

16 bar

Opening dierential pressure WVTS 32 – WVTS 40: min. 0.5 bar; max. 4 bar

WVTS 50 – WVTS 100: min. 0.3 bar; max. 4 bar

Water regulating valves, Type WVTS

Product specication

Technical data

Table 1: Type and media

Table 2: Sensor side

Table 3: Liquid side

Valves are supplied with capillary tube gland. Dierent lengths of capillary tube are available.

If WVTS is required with an opening dierential pressure of 1 – 10 bar, the valve servo spring must be replaced. See

Ordering.

Material

Parts in contact with the medium.

Figure 1: WVTS 32

Figure 2: WVTS 40

Danfoss

16D60

1.2.3.5.6.

6a.7.10.

15.

20.

21.

Sensor

Gland

Bellows element

Regulating nut

Setting element housing

Cover

Pilot orice assembly

Insulating washer

Servo piston

Filter cartridge (self-cleaning)

Equalising orice

Water regulating valves, Type WVTS

Figure 3: WVTS 50 – WVTS 100

The valve body is made of cast iron with pressed-in bronze seat. The pilot orice assembly (7) consists of a housing with seat and pilot cone of stainless steel. A lter cartridge (20) is built into the valve cover. Here the equalising orice is protected by a replaceable lter.

The bellows in the bellows element (3) are of tin bronze. In designing WVTS, great emphasis was placed on producing a valve with a completely tight seat and no external leakage. The servo piston was therefore tted with a ring of special rubber that creates an elastic seal against the valve seat.

A specially designed rubber sleeve ensures that the servo piston moves in the cylinder with minimum friction. External valve leakage is prevented at the pilot cone where the spindle is tted with Teon cupwashers. Cover gaskets and pilot channel seals are rubber.

The water-tight rubber seal between cover (6a) and housing (6) ensure that moisture cannot enter and freeze up the spindle. The insulating washer (10) prevents heat transmission between valve body and setting element housing.

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