Thermostatic radiator valves for towel warmer style radiators 338 33, 00 series REDITED LEFFI 0009/3 N ISO 900 FM 6 ISO 900 No. 0003 Function onvertible radiator valves are typically used in North merica for controlling the fluid to towel warmer style radiators. These special valves can be converted from manual to thermostatic operation by simple replacement of the adjusting knob with a thermostatic control head. This means that the ambient temperature of any room in which they are installed can be constantly maintained at the set value. These valves have a special tailpiece with rubber hydraulic seal, permitting quick, safe connection to the radiator without the use of additional sealing materials. The radiator isolation and balancing valves have a removal protective cap, when removed exposes the allen head screw for adjusting the valve plug position. Product range VLVES: For copper, single and multi-layer PEX pipes 338 series ngled convertible radiator valve body... metric connections /" radiator x 3/" conical pipe 339 series Straight convertible radiator valve body... metric connections /" radiator x 3/" conical pipe 3 series ngled radiator isolation and balancing valves... metric connections /" radiator x 3/" conical pipe 33 series Straight radiator isolation and balancing valves............................. metric connections /" radiator x 3/" conical pipe THERMOSTTI ONTROL HEDS: 00 series Thermostatic control head, built-in sensor with liquid-filled element... graduated scale * corresponding to 8 F (7 8 ) Technical specification of radiator valve bodies and isolation/balancing valves Materials - body: brass chrome plated - valve control stem: stainless steel - seals: EPDM - valve control knob and cap: S (RL 900) ontrol adjustment scale, control head 00000 0 * 3 3 F F F 60 F 68 F 7 F 8 F 0 7 6 0 8 Performance Suitable fluids: water, glycol solutions Max. percentage of glycol: 30% Max. differential pressure assembled with control head: psi ( bar) Max. working pressure: 0 psi (0 bar) Temperature range: 0 F ( 00 ) Technical specification of control head 00000 Scale of adjustment: 0 Setting temperature range: 8 F (7 8 ) Frost protection cut-in: F (7 ) Max. ambient temperature: 0 F (0 ) pproval: ombined with 338/339 valve bodies: UNI EN : 990
Dimensions 3 D E F 3 E F D ode D E F Wt. (lb.) 338 " straight 3 " conical 8" 7 8" 3" 3 6" 0. ode D E F Wt. (lb.) 339 " straight 3 " conical 8" " 3 6" 6" 0. D E E D ode D E Wt. (lb.) 3 " straight 3 " conical 8" 7 8" " 0. ode D E Wt. (lb.) 33 " straight 3 " conical 8" " 3 " 0. 3 ode 00000 M30 x. 3 8" "
3 LEFFI 3 LEFFI Principle of Operation The thermostatic control head is a proportional temperature controller, containing a liquid-filled bellows thermostatic sensor. The valve plug is normally in the spring-to-open (normally open) position () without the control head, or when the control head is in the maximum open position (setting ). Under operation the ambient room temperature of air passing around the sensor rises causing the liquid in the bellows to expand, pushing the valve control stem down against the return spring. This closes the valve, reducing fluid flow to the radiator to cool the room, in proportion to the deviation from the desired temperature setting. When the room temperature decreases, the reverse occurs; the bellows contracts, which in turn allows the valve spring to open the valve, increasing the fluid flow to the radiator to warm the room. NOTE: The valve must be installed with the valve plug closing against incoming flow. The valve control stem () is stainless steel with an EPDM o-ring double seal. This allows for replacement of the control head (3) even with the system operating. The valve plug () is shaped to provide an optimal flow characteristic throughout the opening and closing stroke under proportional thermostatic operation. The wide passageway between the seat and the valve plug causes reduced head losses in manual operation. 3 onvertible valve with manual control (339 pictured) Valve closed Pipe from floor Isolation & alancing Valve open Pipe from floor Isolation & alancing onvertible valve with thermostatic control head (339 with 00000 pictured) Thermostatic Tailpiece with rubber seal The radiator connection thread coupling union is equipped with a special shaped rubber ring (). This system ensures a hydraulic seal without using additional sealing materials such as hemp or PTFE tape. Thermostatic Isolation and balancing valve The isolation and balancing valve, without spring-return action, is adjusted to either shutoff flow (isolation) or modulate flow rate (balancing) with a mm (3/6") allen head wrench (6). The valve must be installed with the plug closing against incoming flow, as shown. 6 (33 pictured) Tamper-proof cap The thermostatic control head can be protected against tampering and theft by mounting the tamper-proof cap, code 09000, on the knob as shown. The cover is fastened with two screws with special heads that can only be tightened or loosened with the special hex key, code 0900.
Hydraulic charateristics onvertible radiator valve with angled connections, code 338 with thermostatic control head, proportional band F onvertible radiator valve with angled connections, code 338 with manual operation 30 0 0 0. 0 (.3) 3. (.).6 ().3.6 (.) 00 0 0 0 0. 33. (.) 6 (7.) 3. (.).6 ().3.6 (.) 0. 0. () (.0) 0. 0. () (.0).00 (.0).00 (.).08.0. (.).8. s at F Proportional band* 30 0 0 0. 0. 0. 0 (.3) 3. (.).6 ().3.6 (.) () (.0).00 (.0).00 (.).08.0. (.).8..00 (.).08.0. (.).8..83 (3.) v = 3. Kv = onvertible radiator valve with straight connections, code 339 with thermostatic control head, proportional band F onvertible radiator valve with straight connections, code 339 with manual operation 00 0 0 0 0. 0. 0. 33. (.) 6 (7.) 3. (.).6 ().3.6 (.) () (.0).00 (.).08.0. (.).8..83 (3.) s at F Proportional band* v =.0 Kv =.8 Isolation and balancing valve with angled connections, code 3 and control head Isolation and balancing valve with straight connections, code 33 0 6 (7.) 0 6 (7.) 0 0 0. / / Fully open * * 7 3..6.3.6 (3) (.) () (.) 0 0 0. / / Fully open * * 7 3..6.3.6 (3) (.) () (.) 0. 0. () (.0) 0. 0. () (.0).00 (.0).00 (.).08.0. (.).8..00 (.0).00 (.).08.0. (.).8. v =.6 Kv =.0 v =. Kv =. * Proportional band is the difference between the thermostatic radiator valve control head setting and the actual room temperature. **7 full turns with mm (3/6") allen head wrench fully, opens the code 3 and 33 valves.
LEFFI LEFFI 3 3 3 Installation Thermostatic control heads should be installed in the horizontal position. The sensitive element of the thermostatic control head must not be installed in niches, alcoves, behind curtains or directly exposed to sunlight, any of which would sense incorrect temperature values. onverting valves from manual to thermostatic control efore installing the thermostatic control head, turn the control knob to the number position. Locking and restricting the thermostat control temperature Temperature restriction. Turn the knob to the fully open position (Pos. ). Using a screw-driver, unlock the ring, pressing it fully towards the valve body.. Turn the knob to the new maximum open position required (e.g. Pos. 3). Turn the ring counterclockwise up to the stop. 3. Re-lock the ring. The valve will now have a temperature range restriction from 0 to the set value. Locking the temperature. Turn the knob to the fully open position (Pos. ). Using a screw-driver, unlock the ring, pressing it fully towards the valve body.. Position the valve at the required temperature and turn the ring clockwise up to the stop. 3. Re-lock the ring. The valve will now be locked at the set temperature. Resetting the temperature restriction and temperature lock. Using a screwdriver,. Turn the knob to unlock the the fully open position ring, pressing it and the ring counterclockwise, fully towards the up to the valve body. stop. The RESET arrows will match up. 3. Re-lock the ring. The valve will now no longer have any temperature restriction or lock.
Fittings ode 68 Universal PEX fittings 68 series fittings are compatible with any STM F876 single layer PEX. Max. working pressure: 0 psi. Working temperature for STM F876 PEX piping: - 80ºF. hrome plated. 68 " nominal PEX, 3 " straight thread female nut ode 68 Universal PEX-L-PEX fittings 68 series fittings are compatible with any STM F8 multilayer PEX-L-PEX pipe. Max. working pressure: 0 psi. Working temperature for STM F8 multilayer PEX-L-PEX piping: - 67ºF with tubing rated 00ºF. 680 " nominal PEX-L-PEX, 3 " straight thread female nut N0 Sweat connection fitting. ode N06 " sweat, 3 " straight thread female nut 37 ompression fitting, for ½" hard copper. With o-ring seal. Max. working pressure: 0 psi (0 bar). Temperature range: -3 0ºF (- 0º). hrome plated. For connecting copper to valve 338 and 339 series. ode 376 " compression, 3 " straight thread female nut
SPEIFITION SUMMRIES 338 series Radiator valve body convertible from standard manual operation to thermostatic control heads and thermo-electric actuators. ngled connections for copper and single and multilayer PEX pipes. Radiator connection /" straight threads with tailpiece equipped with EPDM seal. Pipe connection 3/" conical. rass body. hrome plated. ontrol knob white RL 900, for manual control, in S. Stainless steel control stem. Double seal on control stem with EPDM o-rings. Maximum working temperature F (00 ). Maximum working pressure 0 psi (0 bar). 339 series Radiator valve body convertible from standard manual operation to thermostatic control heads and thermo-electric actuators. Straight connections for copper and single and multilayer PEX pipes. Radiator connection /" straight threads with tailpiece equipped with EPDM seal. Pipe connection 3/" conical. rass body. hrome plated. ontrol knob white RL 900, for manual control, in S. Stainless steel control stem. Double seal on control stem with EPDM o-rings. Maximum working temperature F (00 ). Maximum working pressure 0 psi (0 bar). 3 series Isolation and balancing valve. ngled connections for copper and single and multilayer PEX pipes. Radiator connection /" straight threads with tailpiece equipped with EPDM seal. Pipe connection 3/" conical. rass body. hrome plated. ap white RL 900 in S. Double seal on control stem with EPDM o-rings. Maximum working temperature F (00 ). Maximum working pressure 0 psi (0 bar). 33 series Isolation and balancing valve. Straight connections for copper and single and multilayer PEX pipes. Radiator connection /" straight threads with tailpiece equipped with EPDM seal. Pipe connection 3/" conical. rass body. hrome plated. ap white RL 900 in S. Double seal on control stem with EPDM o-rings. Maximum working temperature F (00 ). Maximum working pressure 0 psi (0 bar). 00 series Thermostatic control head for thermostatic and convertible radiator valves. Sensor incorporated with liquid-filled element. Maximum ambient temperature 0 F (0 ). Graduated scale from * to corresponding to a temperature range of to 8 F (7 to 8 ), with possibility of temperature restriction and locking. Frost protection cut-in at F (7 ). 09 series Tamper-proof cap for thermostatic control head 00 series, for use in public places. We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice. aleffi North merica, Inc. 3883 W. Milwaukee Road Milwaukee, WI 308 Tel: -38-360 Fax: -38-366 sales@caleffi.com www.caleffi.us opyright 0 aleffi North merica, Inc.