Zone Valve

TMO

Motorised 3 ways mixing or diverting zone ball valves

MAIN CHARACTERISTICS

The TMO motorized valves are used in households and small systems for controlling the flow of hot and cold water.
They can be connected as deviator or mixer valves in central heating or cooling systems. The valve controls the water flow by way of a ball shutoff, which can ne set on two or more operating positions according to the model and how the electric motor that actions the valve is powered.
The valve head can be moved without influencing the hydraulic system, guaranteeing great flexibility and speed when carrying out valve maintenance. An auxiliary micro switch can be fitted if requested, and it can be actuated during valve commutation.

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 hot cold
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 3 ways mixings
 3 ways diverting
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 3 ways mixings
 3 ways diverting
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product details

When it is powered, the motor head transmits movement to a shaft that is integral with the ball; the ball, in turn, deviates the flow from one way to another through its holes. The valve can be used as a deviator, with input through way AB and output through way A or B, or as a mixer, with input through way A and B and output through way AB. The perfect ways’ sealing is guaranteed by technopolymer rings, combined with O-rings, fitted in perfect contact to the valve body

  • Valve body: Brass
  • Control shaf: Brass
  • Ball: Chrome plated brass
  • Sealing rings: Teflon
  • Sealing O-Rings: EPDM
  • Motor cover: PA (Nylon)

Type of action

SPDT, SPST, 3 points according to the model


Max. differential pressure

250 kPa, a tenuta A (EN 12266-1)


Nominal pressure

PN10


Fluid temperature limits

5 ÷ 90 °C


Max. ambient temperature

60 °C


Capacity coefficient Kvs

G1":5 m³/h (m³/h - ΔP =1 bar)


Nominal power supply voltage

230 V ~, 24 V ~ 50/60 Hz  according to the model


Absorbed power

7 W(max)


Auxiliary contact capacity

3 (1) A, 250 V ~


Way switching commutation time

6s (180 °), 8s (60 °), 35s (90 °) 140s (90 °) according to the model


Electrical connector type

Molex Mini-Fit JR 6-way or compatible


Appliance insulation class

II Ref. European Directive EN60730


Protection rating

IP 40 Ref. European Directive IEC EN60529


DIMENSIONI DI INGOMBRO Iso 228 e Dimensioni (mm) 
Fig. Mod. DN A B C D E H I
1 TMO 15MMM 15 111 86.5 154 43,5 G ½ (UNI ISO 228/1) 134 54
1 TMO 20MMM 20 111 86.5 154 43,5 G ¾ (UNI ISO 228/1) 134 54
1 TMO 25MMM 25 111 86.5 165 43,5 G 1 (UNI ISO 228/1) 156 54
2 TMO 25E 25 111 86.5 118 43,5 G 1 (UNI ISO 228/1) 62 54

To create the identification of the complete valve or just the actuator, only use the characters given in bold in the table. * only for version with 3P (3 point) control

EXAMPLE. 1. TMO 25MMM SPST 230V 180/6: TMO three-way valve with male connections G1”, SPST type control, without auxiliary micro, 230 V a.c., 180 ° working angle, switchover time 6 seconds.

EXAMPLE 2.  ATM-3 3P MIS 24V 90/35: ATM actuator, for three-way valves, 3-point control type with auxiliary micro, 24 V a.c., 90 ° working angle, switchover time 35 seconds.

EXAMPLE 3. VTM 25-MMM: VTM 25-MMM: VTM three-way valve without actuator, with male connections G 1”;

Head losses substantially do not vary as the fluid course varies, and not even as the fluid course direction varies.

Head losses diagram valve tmo

The TMO valve must be connected electrically to an external control (thermostat,etc..) using a three- or six-pole cable (if with micro switch), with a Molex Mini-Fit JR 6-way connector, respecting the phases from neutral according to the indications given on the label (fig. 1). As shown in fig. 3, there are three types of electric control according to the external control:

 SPST three-wire twin polar type external control:

  • by powering contacts 2 (neutral) and 3 (phase), way A closes and way B opens.
  • by powering contacts 2 (neutral) and 3+6 (phase), way B closes and way A opens.

 SPDT two-wire single pole type external control:

  • by powering contacts 2 (neutral) and 3 (phase), way A closes and way B opens.  
  • by powering contacts 2 (neutral) and 6 (phase), way B closes and way A opens. 

3 POINT control:

  • by powering contacts 2 (neutral) and 3 (phase), way A closes and way B opens.
  • by powering contacts 2 (neutral) and 6 (phase), way B closes and way A opens.
  • by disconnecting the power from contacts 2 and 3 or 2 and 6, the motor head stops and maintains the position reached at that moment. Connect the power, and start the motor in the direction required by the connection to obtain 3 point modulation.

NB: for all types of control, an interruption in the power supply leaves the valve in the position it was in when the supply was interrupted.

AUXILIARY SWITCH

 All versions are available with a double pole auxiliary micro switch (M1S version). The micro switch contacts are independent from the valve electric circuit. The micro switch cannot be fitted on versions that do not have it fitted originally. Micro signal output (fig. 1):

  • contact 1 : C (common)
  • contact 4 : NO (normally open)
  • contact 5 : NC (normally closed).
Electrical Connections
TMO 3 way valve application diagram
TMO 3 way valve application diagram
TMO 3 way valve application diagram
TMO 3 way valve application diagram

TMO

MUT series TMO motorised three-way ball zone valve with by-pass for applications in households and small-medium systems for controlling the flow of hot and cold water. TMO valve may be used either as deviator valve or as mixer valve. Threaded connections G 1” M (ISO 228-1). Brass body. Brass ball, chrome plated. PTFE ball hydraulic seal with EPDM O-Ring. Sealing O-Rings: EPDM. Motor Cover in PA (Nylon). Medium water and glycol solutions; maximum percentage of glycol 50%. Nominal pressure 10 bar. Working temperature range: 5 ÷ 90 °C. Maximum differential pressure 250 kPa. Type of control drive: SPDT, SPST, 3 points according to the model; electric supply 230 V (or 24 V); power consumption 7 W; Auxiliary microswitch contact rating 3 (1) A, 250 V. Protection class IP 40. Appliance insulation class: II - Ref. European Norm EN 60730.Operating time (way switching commutation): 6s (180°), 8s (60°), 35s (90°) 140s (90°) according to the model; ambient temperature range 0 – 60 °C.

specification summaries
TMO Datasheet 2014-04-29 it, en pdf go
  • TMO 2

  • VMR 2-WAY

  • VMR 3-way

  • SF-2

  • SF

  • SF 415

  • SF BASE

  • SFC

  • VS

  • SFCF