Thermostatic three-way valve body
without presetting, with automatic bypass control
The thermostatic three-way-valve bodies are used in two-pipe pump heating systems. For one-pipe pump heating systems a retrofitting thermostatic insert is available. When almost all valves are closed at the same time, additional pressures build up in the heating system. If the three-way valve intercepts the radiator flow, the bypass for the return flow is fully opened. Additional pressures are avoided and the pressure is kept almost constant. The bypass can be connected with the corresponding bypass T-piece on the radiator return.
Features & Benefits
To avoid additional differential pressure
Due to automatic bypass control
With bypass T-piece
For easy connection to the return
Double O-ring seal
For durable and maintenance free operation
Valve body in gunmetal
Corrosion-resistant and safe
Technical Information
Applications:
Two-pipe or one-pipe pump heating systems.
Function:
Control
Shut-off
Avoids additional differential pressure
Ensuring minimum amounts of water circulation
Dimensions:
DN 15
Pressure class:
PN 10
Temperature:
Max. working temperature: 120°C, with protection cap or actuator 100°C.
Min. working temperature: -10°C.
Materials:
Valve body: corrosion resistant Gunmetal
Bypass T-piece: Brass
O-rings: EPDM rubber
Valve disc: EPDM rubber
Return spring: Stainless steel
Valve insert: Brass
Spindle: Niro-steel spindle with double O-ring sealing. The outer O-ring can be replaced under pressure.
Surface treatment:
Valve body and fittings are nickel-plated.
Marking:
THE and flow direction arrow. Black protection cap.
Pipe connection:
The valve body and the bypass T-piece are designed for connection to threaded pipe, or in conjunction with compression fittings, to copper precision steel or multi-layer pipe.
Connection to thermostatic head and actuator:
HEIMEIER M30x1,5
Articles
Connection on the radiator left or right
Bypass T-piece
Connection on the radiator left or right
Bypass connection | DN | D | d2 | EAN | Article No |
DN 15 (1/2") Screwed nipple | 15 | Rp1/2 | R1/2 | 4024052222117 | 4154-02.000 |
*) SW1: 27mm, SW2: 30mm
Connection on the radiator left
Thermostatic three-way valve body
Connection on the radiator left
Bypass connection | DN | D | d2 | Kv Radiator [xp] 1 K / 2 K 1) | Kv total 2) | EAN | Article No |
DN 15 (1/2") Screwed nipple | 15 | Rp1/2 | R1/2 | 0,38 / 0,73 | 1,45 | 4024052221714 | 4151-02.000 |
1) Distribution ratio at 2.0 K approx. 50%.
2) Total Kv-value for radiator and bypass.
*) SW1: 27mm, SW2: 30mm
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
Kv [xp] max. 1 K / 2 K = m3/h at a pressure drop of 1 bar with thermostatic head.
Connection on the radiator right
Thermostatic three-way valve body
Connection on the radiator right
Bypass connection | DN | D | d2 | Kv Radiator [xp] 1 K / 2 K 1) | Kv total 2) | EAN | Article No |
DN 15 (1/2") Screwed nipple | 15 | Rp1/2 | R1/2 | 0,38 / 0,73 | 1,45 | 4024052221615 | 4150-02.000 |
1) Distribution ratio at 2.0 K approx. 50%.
2) Total Kv-value for radiator and bypass.
*) SW1: 27mm, SW2: 30mm
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
Kv [xp] max. 1 K / 2 K = m3/h at a pressure drop of 1 bar with thermostatic head.
for copper or precision steel pipe according to DIN EN 1057/10305-1/2. Connection male thread G3/4 according to DIN EN 16313 (Eurocone). Metal-to-metal joint. Nickel-plated brass. With a pipe wall thickness of 0.8-1 mm insert supporting sleeves. Heed pipe manufacturer’s technical advice.
Compression fitting
for copper or precision steel pipe according to DIN EN 1057/10305-1/2.
Connection male thread G3/4 according to DIN EN 16313 (Eurocone).
Metal-to-metal joint.
Nickel-plated brass.
With a pipe wall thickness of 0.8-1 mm insert supporting sleeves. Heed pipe manufacturer’s technical advice.
Ø Pipe | EAN | Article No |
12 | 4024052214211 | 3831-12.351 |
14 | 4024052214310 | 3831-14.351 |
15 | 4024052214617 | 3831-15.351 |
16 | 4024052214914 | 3831-16.351 |
18 | 4024052215218 | 3831-18.351 |
for Alu/PEX multi-layer pipe according to DIN 16836. Female thread connection Rp1/2.Nickel-plated brass.
Compression fitting
for Alu/PEX multi-layer pipe according to DIN 16836.
Female thread connection Rp1/2.
Nickel-plated brass.
Ø Pipe | EAN | Article No |
16 x 2 | 4024052138616 | 1335-16.351 |
for Alu/PEX multi-layer pipe according to DIN 16836. Connection male thread G3/4 according to DIN EN 16313 (Eurocone).Nickel-plated brass.
Compression fitting
for Alu/PEX multi-layer pipe according to DIN 16836.
Connection male thread G3/4 according to DIN EN 16313 (Eurocone).
Nickel-plated brass.
Ø Pipe | EAN | Article No |
16x2 | 4024052137312 | 1331-16.351 |
18x2 | 4024052137411 | 1331-18.351 |
For the application of thermostatic three-way valve bodies in one-pipe heating systems.The circuit flow rate is designed to be distributed to 35% radiator and 65% bypass.Kv-value total 2,40 [m3/h] (with 2 K p-band).Flow diagram on request.
Retrofit thermostatic insert
For the application of thermostatic three-way valve bodies in one-pipe heating systems.
The circuit flow rate is designed to be distributed to 35% radiator and 65% bypass.
Kv-value total 2,40 [m3/h] (with 2 K p-band).
Flow diagram on request.
EAN | Article No |
4024052217410 | 4101-03.300 |
for plastic pipe according to DIN 4726, ISO 10508. PE-X: DIN 16892/16893, EN ISO 15875; PB: DIN 16968/16969. Connection male thread G3/4 according to DIN EN 16313 (Eurocone). Nickel-plated brass.
Compression fitting
for plastic pipe according to DIN 4726, ISO 10508. PE-X: DIN 16892/16893, EN ISO 15875; PB: DIN 16968/16969.
Connection male thread G3/4 according to DIN EN 16313 (Eurocone).
Nickel-plated brass.
Ø Pipe | EAN | Article No |
12x1,1 | 4024052136018 | 1315-12.351 |
14x2 | 4024052134618 | 1311-14.351 |
16x1,5 | 4024052136117 | 1315-16.351 |
16x2 | 4024052134816 | 1311-16.351 |
17x2 | 4024052134915 | 1311-17.351 |
18x2 | 4024052135110 | 1311-18.351 |
20x2 | 4024052135318 | 1311-20.351 |
For clamping plastic, copper, precision steel or multi-layer pipes.Nickel-plated brass.
Double connection fitting
For clamping plastic, copper, precision steel or multi-layer pipes.
Nickel-plated brass.
L | EAN | Article No | |
G3/4 x R1/2 | 26 | 4024052308415 | 1321-12.083 |
for copper or precision steel pipe according to DIN EN 1057/10305-1/2.Female thread connection Rp3/8 – Rp3/4.Metal-to-metal joint. Brass nickel-plated.Support sleeves should be used for a pipe wall thickness of 0.8 – 1 mm. Follow the specifications of the pipe manufacturer.
Compression fitting
for copper or precision steel pipe according to DIN EN 1057/10305-1/2.
Female thread connection Rp3/8 – Rp3/4.
Metal-to-metal joint.
Brass nickel-plated.
Support sleeves should be used for a pipe wall thickness of 0.8 – 1 mm. Follow the specifications of the pipe manufacturer.
Ø Pipe | DN | EAN | Article No |
12 | 10 (3/8") | 4024052174614 | 2201-12.351 |
14 | 15 (1/2") | 4024052174713 | 2201-14.351 |
15 | 15 (1/2") | 4024052175017 | 2201-15.351 |
16 | 15 (1/2") | 4024052175116 | 2201-16.351 |
18 | 20 (3/4") | 4024052175215 | 2201-18.351 |
for copper or precision steel pipe according to DIN EN 1057/10305-1/2 and stainless steel pipe. Connection male thread G3/4 according to DIN EN 16313 (Eurocone). Soft sealed, max. 95°C. Nickel-plated brass.
Compression fitting
for copper or precision steel pipe according to DIN EN 1057/10305-1/2 and stainless steel pipe.
Connection male thread G3/4 according to DIN EN 16313 (Eurocone).
Soft sealed, max. 95°C.
Nickel-plated brass.
Ø Pipe | EAN | Article No |
15 | 4024052515851 | 1313-15.351 |
18 | 4024052516056 | 1313-18.351 |
for copper or precision steel pipe with a 1 mm wall thickness. Brass.
Support sleeve
for copper or precision steel pipe with a 1 mm wall thickness.
Brass.
Ø Pipe | L | EAN | Article No |
12 | 25,0 | 4024052127016 | 1300-12.170 |
15 | 26,0 | 4024052127917 | 1300-15.170 |
16 | 26,3 | 4024052128419 | 1300-16.170 |
18 | 26,8 | 4024052128815 | 1300-18.170 |
