Temperature Regulator Type 1u
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Temperature Regulator Type 1u - 1

Self-operated Temperature Regulators Temperature Regulator Type 1u Application Temperature regulators for cooling installations · Control thermostats for set points 1) from –10 to 250 °C · G ½ to G 1 or DN 15 to 50 · Nominal pressure PN 25 · Suitable for liquids up to 150 °C and non-flammable gases up to 80 °C The valve opens as the temperature rises. Conversion of valve sizing coefficients CV (in US gallons/min) = 1.17 · KVS (in m³/h) KVS (in m³/h) = 0.86 · CV (in US gallons/min) The regulators consist of a globe valve with female thread (G ½ to G 1) or flanged body (DN 15 to 50) and a control thermostat, comprising a temperature sensor, set point adjuster with excess temperature protection, capillary tube and operating element. Special features • Low-maintenance P regulators requiring no auxiliary energy • Wide set point range and convenient set point adjustment indicated on a dial • Globe valves with plug balanced by a bellows (DN 32 to 50) • Suitable for liquids, particularly for cooling media, e.g. cooling water and brine Versions Type 1u Temperature Regulators · Type 2121 Valve with G ½ to G 1 female thread, PN 25, unbalanced or Type 2121 Valve with flange DN 15 to 50, PN 25, balanced DN 32 to 50 Type 2231 to 2234 Control Thermostat For details on the application of the control thermostats, refer to Information Sheet T 2010 EN. Type 2121/2231 (Fig. 1) · With Type 2121 Valve and Type 2231 Control Thermostat for liquids · Set point adjustment at the sensor · Set points from –10 to +150 °C Type 2121/2232 (Fig. 2) · With Type 2121 Valve and Type 2232 Control Thermostat for liquids and steam · Separate set point adjustment · Set points from –10 to +250 °C Type 2121/2233 · With Type 2121 Valve and Type 2233 Control Thermostat for liquids, air and gases · Set point adjustment at the sensor · Set points from –10 to +150 °C Type 2121/2234 · With Type 2121 Valve and Type 2234 Control Thermostat for liquids, steam, air and gases · Separate set point adjustment · Set points from –10 to +250 °C Special version – Capillary tube 5 m, 10 m, 15 m – Sensor made of CrNiMo steel – Capillary tube made of CrNiMo steel or plastic-coated copper version for set points from –40 to +60 °C Associated Information Sheet Fig. 1 · Type 1u Temperature Regulator (valve with female thread) with Type 2231 Control Thermostat Fig. 2 · Type 1u Temperature Regulator (valve with flanged body) with Type 2231 Control Thermostat Version with minimum flow rate Plug with PTFE sealing ring Valve free of non-ferrous metal Version for oil at max. permissible temperature of 220 °C ANSI version on request (

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Temperature Regulator Type 1u - 2

Principle of operation (see Fig. 3) The regulators operate according to the liquid expansion principle. The temperature sensor (13), capillary tube (10), and operating element (7) are filled with an expanding liquid. The liquid changes its volume depending on the temperature, causing the operating element (7) and thus the plug stem (5) with the plug (3) of the valve to move. The position of the plug determines the flow rate of the heat transfer medium across the area released between the plug (3) and seat (2). The temperature set point can be adjusted with a key (11) to a value that can be...

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Temperature Regulator Type 1u - 3

Table 2 • Materials • Material numbers according to DIN EN Installation • Valve Install the valves in horizontal pipelines. The direction of flow must correspond with the arrow on the body. The connecting element must be vertically suspended. • Temperature sensor The temperature sensor can be installed in any desired position. Nevertheless, its entire length must be immersed in the process medium. Choose a place of installation where neither overheating nor considerable idle times occur. Only use the same kind of materials together; thermowells made of stainless steel 1.4571, for example,...

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Temperature Regulator Type 1u - 4

Thermowells for Types 2231/2232 Thermowells with threaded and flanged connections Control thermostat_ Type 2231 Type 2232 Mounting parts for Types 2233/2234 Thermowells for flammable gases (PN 100/PN 63) Extension piece: Standard version L = approx. 140 mm, approx. 0.5 kg Special version (with bellows seal) L = approx. 180 mm, approx. 0.6 kg Separating piece: with seals approx. L = 55 mm, approx. 0.2 kg 1) When accessories are used, the H and H1 increase by the dimension L Accessories Thermowells with threaded or flanged connections for Types 2231 and 2232 Bulb Sensors • G 1 threaded...

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Temperature Regulator Type 1u - 5

Type 2121 with female thread Type 2121with flanged body Type 2231/2233 Control Thermostat Type 2231/2233 Control Thermostat Type 2232/2234 Control Thermostat with separate set point adjustment Table 3 · Dimensions in mm and weights in kg Type 2121 Valve Female thread Flanged body Weight, approx. Control thermostat Larger immersion depths available on request

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Temperature Regulator Type 1u - 6

A separating piece is made of brass (for water and steam) or CrNi steel (for water and oil). A separating piece must be used when a seal between thermostat and valve is required. Separating pieces made of CrNi steel must be used when all wetted parts are to be free of non-ferrous metals. In addition, it prevents the medium from leaking while the thermostat is being replaced. Manual adjuster Ma with travel indicator • MaS with electric signal transmitter Dynamic behavior of the thermostats The dynamics of the regulator are mainly determined by the response of the sensor with its...

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