Thermostatic Mixing Valves

Three-way valves “Tri-D”, “Tri-D plus” and Tri-M” Four-port valve “Tri-M plus”

Three-way diverting valve "Tri-D", brass. Brass valve DN 15 with connection thread M 30 x 1.5 for use in heating and cooling systems, 3 x 3/4" male threaded connection "Euro" cone for different pipes:
- threaded tailpipe
- solder tailpipe
- plug-in tailpipe
- compression fittings for copper, plastic and composition pipes
The valve is installed in the return pipe of chilled ceilings for the regulation of the flow temperature depending on the dew point temperature of the room. Adaptation of the flow temperature of the chilled ceiling without interrupting cooling operation. The installation not only of a temperature sensor in the supply pipe of the chilled ceiling but also of a sensor detecting the humidity of the room is required.

Three-way diverting valve "Tri-D plus" with T-piece DN 15 with connection thread M 30 x 1.5 for thermostats and actuators. Male threaded connection 4 x 3/4" to the pipe for different tailpipes and compression fittings.
Application:
- chilled ceilings
- Fan-Coil units
- heating systems
- for mass flow distribution with additional possibility for room temperature control or dew point control e.g.

Three-way diverting valve "Tri-D", bronze. Three-way mixing valve "Tri-M", bronze
Flat sealing bronze valves sized DN 20, 25, 40 with connection thread M 30 x 1.5 for thermostats or actuators.
The valves are used in heating or cooling systems in which the volumes of flow are to be diverted, mixed or changed-over. They are frequently used for storage charging connections or in heating systems with two heat producers.

System illustration

Three-way diverting valve in a chilled ceiling e.g. with electromotive actuator with temperature sensor in the supply pipe.

Four-port mixing valve "Tri-M plus" Regulating valve for heating and cooling systems as well as for the regulation of suspended and vertical Fan-Coil units.
Brass valve DN 15 with connection thread M 30 x 1.5 for thermostats and actuators. Flat sealing male threaded connection 4x1/2”.
Technical data:
- Max. working pressure: 10 bar
- Max. differential pressure: 1 bar
- Working temperature range: -10°C to +120°C
- kvs values: 0.45/1.0/1.8

“Brawa-Mix 97”

Table 1 - Conditions for Normal Use

Operating pressure range

High

Low

Max static pressure (bar)

10

10

Flow pressure hot & cold (bar)

1 to 5

0.2 to 1

Hot supply temperature (deg C)

52 to 65

52 to 65

Cold supply temperature (deg C)

5 to 20

5 to 20

Thermostatic mixing valve features a stepless manual adjustment of the temperature of mixed water for domestic use, and is particularly suitable for use in Hospitals, Schools, Nursing Homes and other care situations.

  • Performance in accordance with NHS Model Specification DO8, as a "Type 3" valve (see Table 2 below), and to NHS Estates Guidance Note "Safe" Hot Water and Surface Temperatures.
  • WRc Certificate No. ETC/43/0698
  • Allows high temperature primary hot water to combat Legionella, without the risk of scalding.
  • Lockable handwheel.
  • Calcification resistant.
  • A range of inlet fittings kits allow for flexibility of installation.
  • Available with integral WRc approved check valves and stainless steel mesh strainers.

Technical Specification:
Valve:
Bronze (Rg 5) valve body, DZR brass bonnet, the valve cone and sliding components are made from high quality calcification resistant plastic. EPDM seals. Lockable handwheel.
Item No. 130 03 51
Connections - 1" BSP male thread with union nuts, to suit 15 mm or 22 mm tailpipe sets.
Tailpipe Sets:
Compression sets
Straight compression tailpipes - 2 fold - complete with integral check valves and mesh strainers, for the hot and cold inlet ports, and a compression fitting for the mixed outlet port.
15 mm                                          Item No. 130 03 88
22 mm                                          Item No. 130 03 89
Swivel compression tailpipes - 2 fold - complete with integral check valves and mesh strainers, for the hot and cold inlet ports, and a compression fitting for the mixed outlet port.
15 mm                                          Item No. 130 03 95
22 mm                                          Item No. 130 03 96
Solder tailpipe sets
Comprising 3 solder tails without check valves or strainers.
15 mm                                          Item No. 130 03 92
22 mm                                          Item No. 130 03 94

Example of installation

Application:
Fitted in accordance with NHS and/or Local Authority requirements, typically under handbasins or baths, and in accordance with our Installation & Operation Instructions, the "Brawa-Mix 97" can be used to mix primary hot water with cold water from the mains or a storage tank provided that both hot and cold water conditions are within the limits detailed in Table 1. The mixed water entirely engulfs the sensing element, thereby maintaining an accurate temperature control.
The stepless adjustment between 35 and 460 deg.C for the mixed water is by a handwheel which is lockable, thus preventing unauthorised tampering. High quality calcification, dezincification and corrosion resistant materials are used in the manufacture of all working components. The hot water port closes in case of failure of the cold water supply.

In order to protect the precision machined internal surfaces of the "Brawa-Mix 97" we strongly recommend the use of "Y" type line strainers in the hot and cold water supply pipes.

15mm or 22mm

22mm only

HP-S (41 max)

HP-T44 (44 max)

HP-W (41 max)

HP-T46 (46 max) *

LP-W (41 max)

LP-S (41 max)

The “Brawa-Mix 97” is certificated for use as a “Type 3” valve on the following outlet designations only when fitted with the appropriate sized tailpipe set.

(41, 44 or 46 max) relates to the maximum set mixed water temperatures as defined within HGN “SAFE” Hot Water & Surface Temperatures.

* Refer to the above HGN for guidance when using designation HP-T46.