Features & Benefits
RVT valve (FLOWRETT)
Ensures trouble-free operation and reduced maintenance costs.
Calypso TRV-3 valve (TWORETT)
For accurate balancing, trouble-free operation and better comfort.
Low flow charateristics (TWORETT)
Flow range from a very low flow up to standard level.
Diverter TA-UNI
Convertible for one- or two-pipe application
Bottom or side connection
Ensures smoother installation.
Technical Information
Application:
Heating systems
Functions:
Regulating
Presetting
Shut-off
Dimensions:
DN 10
Pressure classe:
PN 10
Max. differential pressure:
The max. pressure difference allowed for the valve not to open against a closed thermostat: 100 kPa.
Temperature:
Max. working temperature: 120°C, with protection cap or actuator 100°C.
Min. working temperature: -10°C.
Material:
Diverters:
Valve body: Hot stamped brass
Valve stem: Brass
O-rings: EPDM rubber
Radiator valves:
Valve body: Brass
O-rings: EPDM rubber
Return spring: Stainless steel
RVT/RVO:
Valve disc: EPDM rubber
Valve insert: Brass. (The complete thermostatic insert can be replaced using the fitting tool without draining the system.)
Spindle: Niro-steel spindle with double O-ring sealing. (The outer O-ring can be replaced under pressure.)
Calypso TRV-3:
Valve disc: NBR rubber
Valve insert: Brass, PPS (polyphenylsulphide) and SPS (syndiotactic polystyrene). (The complete thermostatic insert can be replaced using the fitting tool without draining the system.)
Spindle: Niro-steel spindle with double O-ring sealing.
Others:
Connection pipes: Steel
Radiator connections: AMETAL®
AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.
Surface treatment:
Nickel-plated
Marking:
The distributors are marked with TA and a flow direction arrow on the valve body.
FLOWRETT:
The RSD 821 cap without splines.
TWORETT:
The RSD 802 cap with splines.
TA-UNI:
Cap without splines.
Radiator valves:
All radiator valves are marked with TA, country code, flow direction arrow, DN and KEYMARK-Designation on the valve body.
Calypso TRV-3: Red protection cap. Upper part of valve insert: Red.
RVT: Black protection cap. Black stuffing box.
RVO: White handwheel. Black stuffing box.
Connection to thermostatic head and actuator:
HEIMEIER M30x1,5
Articles
TWORETT/RSD 802
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_802-100_M.gif)
DN | Da | Kvs* | EAN | Article No | |
2-pipe | 10 | M22x1,5 | 1,54 | 7318792694400 | 50 802-100 |
FLOWRETT/RSD 821
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_600-100_M.gif)
DN | Da | Kvs* | EAN | Article No | |
1-pipe | 10 | M22x1,5 | 1,5 | 7318792693700 | 50 801-100 |
Convertable 1-pipe/-2-pipe
TA-UNI
Convertable 1-pipe/-2-pipe
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_600-100_M.gif)
DN | Da | Kvs* | EAN | Article No | |
1-pipe | 10 | M22x1,5 | 1,5 | 7318792642807 | 50 600-100 |
2-pipe | 1,0 |
*) Whole manifold assembly.
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
Thermostatic controlled
Calypso TRV-3 Reversed angle
Thermostatic controlled
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_824-012_M.gif)
DN | D | Da | L | L1 | L2** | H | KvΔT2K | EAN | Article No |
10 | 12 | M22x1,5 | 27 | 37 | 125 | 46,5 | 0,010-0,520 | 4024052946914 | 50 824-012 |
**) Valve with fitted thermostatic head K.
KvΔT2K = The values are valid when used together with thermostic head K (without diverter).
Thermostatic controlled
Calypso TRV-3 Straight
Thermostatic controlled
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_820-012_M.gif)
DN | D | Da | L1 | L2** | H | KvΔT2K | EAN | Article No |
10 | 12 | M22x1,5 | 22,5 | 110 | 50 | 0,010-0,520 | 4024052947010 | 50 820-012 |
Hand controlled
RVO Angle
Hand controlled
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_610-312_M.gif)
DN | D | Da | L | L1 | H | Kvs | EAN | Article No |
10 | 12 | M22x1,5 | 27 | 68,5 | 46,5 | 1,00 | 7318794030503 | 50 610-312 |
KvΔT2K = The values are valid when used together with thermostic head K (without diverter).
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
Thermostatic controlled (not suitable for two-pipe system)
RVT Angle
Thermostatic controlled (not suitable for two-pipe system)
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/With_M/50_520-312_M.gif)
DN | D | Da | L | L1 | L2** | H | KvΔT2K | Kvs | EAN | Article No |
10 | 12 | M22x1,5 | 27 | 37 | 125 | 46,5 | 0,65 | 1,00 | 7318794030404 | 50 520-312 |
**) Valve with fitted thermostatic head K.
Cut lengths for reversed angle valve
c/c | EAN | Article No * |
245-246 | 7318793915306 | 50 630-202 |
248-250 | 7318793915504 | 50 630-205 |
345-346 | 7318793916501 | 50 630-302 |
348-350 | 7318793916709 | 50 630-305 |
355 | 7318793916907 | 50 630-312 |
446 | 7318793918109 | 50 630-402 |
448-450 | 7318793918307 | 50 630-405 |
546 | 7318793919700 | 50 630-502 |
548-550 | 7318793919908 | 50 630-505 |
*) The last three digits of the article number represents to the pipe length, e.g. 50 630-305 = 305 mm.
Pipe – standard length
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Flowrett_Tworett_TA-UNI/Without_M/50629001.jpg)
L | ØD | EAN | Article No |
1100 | 12 | 7318793923103 | 50 630-001 |
Cut lengths for straight valve
c/c | EAN | Article No * |
145 | 7318793912503 | 50 630-064 |
149-150 | 7318793912701 | 50 630-069 |
240 | 7318793914408 | 50 630-160 |
248-250 | 7318793914705 | 50 630-168 |
340 | 7318793915900 | 50 630-260 |
348-350 | 7318793916105 | 50 630-268 |
385-387 | 7318793916709 | 50 630-305 |
398-400 | 7318793917003 | 50 630-318 |
440 | 7318793917409 | 50 630-360 |
446 | 7318793917607 | 50 630-365 |
448-450 | 7318793917706 | 50 630-368 |
485 | 7318793918307 | 50 630-405 |
505 | 7318793945709 | 50 630-425 |
540 | 7318793919106 | 50 630-460 |
546 | 7318793919304 | 50 630-465 |
548-550 | 7318793919403 | 50 630-468 |
600 | 7318793920201 | 50 630-520 |
845-846 | 7318793921505 | 50 630-765 |
*) The last three digits of the article number represents to the pipe length, e.g. 50 630-305 = 305 mm.
Straight with O-ring
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_M/50_707-610_M.gif)
d | Da | L | EAN | Article No |
G1/2 | M22x1,5 | 33 | 7318793825803 | 50 707-616 |
Elbow
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_M/50_702-510_M.gif)
d | Da | L | H | EAN | Article No |
M22x1,5 | M22x1,5 | 27 | 26,5 | 7318792689802 | 50 702-510 |
Straight
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_M/50_701-110_M.gif)
d | Da | L | L1 | EAN | Article No |
R3/8 | M22x1,5 | 25 | 8 | 7318792687402 | 50 701-510 |
R1/2 | M22x1,5 | 25 | 10 | 7318792687600 | 50 701-516 |
For ALU/PEX pipe.
Connection set FPL-MT with O-ring
For ALU/PEX pipe.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/FPL/With_M/53_644-312_M.gif)
d | L1 | For MT-pipe D | N | EAN | Article No |
M22x1,5 | 14 | 16x2,0 * | 25 | 7318792963100 | 53 693-116 |
1) Over all length.
*) Support bush made of brass CW724R.
complete with case, box spanner and replacement seals, for replacing thermostatic inserts without draining off the heating system (for DN 10 to DN 20).
Fitting tool
complete with case, box spanner and replacement seals, for replacing thermostatic inserts without draining off the heating system (for DN 10 to DN 20).
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_w-o-M/9721-00-000.jpg)
EAN | Article No | |
4024052298914 | 9721-00.000 | |
Replacement seals | 4024052299010 | 9721-00.514 |
Thermostatic heads - see catalogue leaflets K, DX and Halo.
Thermoelectric actuators - see catalogue leaflets EMO T and TA-Slider 160.
Other accessories - see catalogue leaflet ACCESSORIES AND SPARE PARTS.
Couplings - see catalogue leaflets FPL, FPL-MT and FPL-PX.
For V-exact II from 2012, Calypso exact, Calypso TRV-3 and Vekolux.Color grey.
Setting key
For V-exact II from 2012, Calypso exact, Calypso TRV-3 and Vekolux.
Color grey.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_w-o-M/367001142.jpg)
EAN | Article No |
4024052035823 | 3670-01.142 |
RVT, RVO
Valve insert
RVT, RVO
Can be replaced during operation.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_w-o-M/1302-02-300.jpg)
EAN | Article No |
4024052132614 | 1302-02.300 |
Handwheel
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_M/50_399-003_M.gif)
L | EAN | Article No |
36 | 4024052323494 | 1303-01.325 |
Calypso TRV-3
Valve insert
Calypso TRV-3
Can be replaced during operation.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Calypso_TRV-3/Without_M/367000300.jpg)
EAN | Article No |
4024052973316 | 3670-00.300 |
NOTE: Presetting and values according to thermostatic valve body V-exact II, see www.imi-hydronic.com.
Special insert Calypso TRV-3 for inverse direction of flow with reversed supply and return pipes
NOTE: Presetting and values according to thermostatic valve body V-exact II, see www.imi-hydronic.com.
Can be replaced during operation.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Drawings/Accessories%20for%20radiator%20valves/Drawings_w-o-M/3700-24-300.jpg)
EAN | Article No |
4024052951611 | 3700-24.300 |
Photos
![](/sites/default/files/styles/large/https/assets.imi-hydronic.com/Pictures/Image_Gallery_Heimeier/Photos/FLOWRETT_TWORETT_TA-UNI_2019/TA-UNI_TRV-3_straight_w_rad_conn_persp.gif?itok=lpYShw6Z)
TA-UNI_TRV-3_straight_w_rad_conn_persp
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TWORETT_angle
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RSD802_persp
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TWORETT_angle_persp
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FLOWRETT_angle_persp
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TA-UNI_persp
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TWORETT_straight_w_rad_conn
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FLOWRETT_angle
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RSD802
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TWORETT_straight_persp
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TA-UNI_TRV-3_straight_w_rad_conn
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RSD801
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50630001
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TA-UNI
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RSD801_persp
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