Mixing Valve For Hot Water Circulation

Mixing Valve For Hot Water Circulation

Model: 5219, External Thread

  

TECHNICAL DATA

Materials
Body: dezincification resistant alloy
EN 12165 CW602N, outside chrome plated
Obturator: PSU
Springs: stainless steel
Seals: EPDM
Knob: ABS

Performance
Adjustment temperature range: 35–65°C
Accuracy: ±2°C
Max. working pressure (static): 10 bar
Max. working pressure (dynamic): 5 bar
Max. inlet temperature: 90°C
Max. inlet pressure ratio (H/C or C/H): 2:1
Minimum temperature difference between hot water inlet and mixed
water outlet, to ensure thermal shut-off function: 15°C
Minimum flow rate for stable operation: 4 l/min (1/2” and 3/4”), 6 l/min (1”)
Connections: 1/2”, 3/4”, 1” M with union

Operating principle
The tempering valve mixes the hot and cold water at the inlet so as to maintain the mixed water at a constant set temperature at the outlet.
A thermostatic element (1) is fully immersed in the mixed water flow (2). It contracts or expands, moving an obturator (3) which controls the passage of hot (4) or cold (5) water at the inlet. If the inlet temperature or pressure changes, the internal element automatically reacts to restore the set temperature at the outlet.

Construction details

Anti-scale materials
The materials used in constructing the tempering valve were selected to eliminate seizing due to limescale deposits. All
functional parts are made using a special anti-scale material with low friction coefficient, which ensures that performance is
maintained over time.
Thermal shut-off
In the event of accidental cold water supply failure, the obturator shuts off the hot water passage, thus preventing the delivery of mixed water. This performance is guaranteed only when there is a minimum temperature difference between the inlet hot water and the outlet mixed water of 15°C.

Temperature adjustment

The temperature is set at the desired value using the control knob with the graduated scale on the valve.

INSTALLATION EXAMPLES