Thermostatic valve bodies

Transcription

1 Thermostatic valve bodies for single pipe heating systems Thermostatic valves with radiator connection systems

2 IMI HEIMEIER / Thermostatic heads and Radiator valves / Thermostatic valve bodies for single pipe heating systems Thermostatic valve bodies for single pipe heating systems E-Z System The E-Z System is a universally useable valve for all radiators with a two point connection in single and two-pipe heating systems. the single pipe valve with immersion pipe is used for radiators with lateral single point connection. Centre-to-centre distance of pipe connections 58 mm. Key features > > For single and two-pipe heating systems > > Especially low flow resistance > > Fits in every installation situation thanks to different structural shapes of the thermostatic valve bodies > > No return circulation thanks to integrated gravity brakes in the E-Z distributor Technical description The E-Z System is a universally useable valve for all radiators with a two point connection in single and two-pipe heating systems. The system consists of an E-Z distributor, thermostatic valve body, alternatively with axial, angle or straight form with bend nipple, as well as precision steel pipe and compression fittings. Pipe connector G3/4, with compression fittings for plastic, copper, precision steel, or multi-layer pipes. For the E-Z System, use only the accompanying, labeled IMI Heimeier compression fittings (label e. g. 15 THE). In single pipe operation, the mass flow to the radiators can be set anywhere in the area between 30 60%. Factory settings: 35% to the radiator. The distributor can be reset by turning the regulating cone to the left as far as it will go to two-pipe operation (100% mass flow through the radiator, by-pass closed). By turning the regulating cone all the way to the right, the return is shut off, the supply by closing the thermostatic valve body, as a result of which the radiator is detachable without emptying the unit. The by-pass stays opened in single pipe operation regardless of the shut-off, so that the circulation of the circularpipeline is not interrupted. The flow direction marked on the E-Z distributor should be followed, since the flow through the radiator is not optimal with a switched connection. Important for single pipe heating! Always use thermostatic valve bodies with blue protection cap and stuffing box (gravity model). 2

3 Contruction E-Z System with axial thermostatic valve body and blue protection cap 1. Gravity brake 2. Regulating cone Application Sample application Single pipe system 1. E-Z System 2. Radiator 3. STAD balancing valve Note The composition of the heat transfer medium should be one which avoids damage or the accumulation of stones in hot water heating systems, in accordance with VDI guide line For industrial and long-distance energy systems, see applicable codes VdTÜV and 1466/AGFW 5/15. Heat transfer media containing mineral oils or lubricants containing mineral oil can have seriously negative effects on the source apparatus and usually lead to the disintegration of EPDM seals. When using nitrite-free frost and corrosion resistance solutions with an ethylene glycol base, pay close attention to the details outlined in the manufacturers documentation, particularly details concerning concentration and specific additives. The thermostatic valve bodies fit all IMI Heimeier thermostatic heads and thermal or motor-driven actuators. Tune components appropriately to guarantee maximum safety. When using actuators from other manufacturers, make sure that the regulating power is appropriate for thermostatic valve bodies with soft-seal valve heads. 3

4 IMI HEIMEIER / Thermostatic heads and Radiator valves / Thermostatic valve bodies for single pipe heating systems Articles E-Z System Axial thermostatic valve body With protection cap and stuffing box blue. Nickel-plated gunmetal. DN 15 (1 2 ) Angle thermostatic valve body With protection cap and stuffing box blue. Nickel-plated gunmetal. DN 15 (1 2 ) Connection to radiator left DN 15 (1 2 ) Connection to radiator right Straight thermostatic valve body with bended nipple With protection cap and stuffing box blue. Nickel-plated gunmetal. DN 15 (1 2 ) Compression fitting for precision steel pipes. Female thread connection Rp 1/2. Metal-to-metal joint. Brass nickel-plated Precision steel pipe For supply pipe. Chrome-plated. Ø 15 mm mm long Compression fitting for precision steel pipes. Female thread connection Rp 1/2. Metal-to-metal joint. Brass nickel-plated E-Z distributor For single and two-pipe heating systems. Nickel-plated gunmetal. DN 15 (1 2 ) Compression fitting for plastic, copper, precision steel or multi-layer pipes see Accessories. 4

5 Single pipe valve with immersion pipe Single pipe valve with immersion pipe for radiators with lateral single point connection. Centre-to-centre distance of pipe connections 58 mm. Key features > > Body made of nickel-plated corrosion-free gunmetal > > Especially low flow resistance > > Universal connection possibilities for plastic, copper, precision steel or multi-layer pipes > > No return circulation thanks to integrated gravity brakes in the single pipe valve Technical description Single pipe valve made out of gunmetal nickel-plated with immersion pipe for radiators with lateral single point connection. The valves consists of a single pipe valve lower part, immersion pipe (short or long version) and diaphragm plate. Pipe connector G 3/4, with compression fittings for plastic, copper, precision steel, or multi-layer pipes. For the Single pipe valve lower part, use only the accompanying, labeled IMI Heimeier compression fittings (label e. g. 15 THE). An almost completely consistent mass flow rate in the circular pipe is guaranteed by the special regulating cone. When working at full capacity, the radiator is set at 35% of the mass flow rate in circuit. Supply and return can be shut off, as a result of which the radiator is detachable without emptying the unit. The by-pass remains open, independent of the shutoff, so that circuit operation is not interrupted. Note: The immersion pipes are available according to application in two different lengths. The long immersion pipe (thread reach 250 mm) is to be used when installing DIN, pipes and narrowtube radiators with more than 10 elements, otherwise use the short immersion pipe (thread reach 85 mm). With both immersion pipes, the stuffing box is installed in the middle of the first element. When using plate and special radiators, a two chamber connection with a bore hole of Ø 11 mm must exist or the radiator connection must be installed in such a way so that the long immersion pipe can be fed in without a diaphragm plate. Distributor and separation elements as well as the immersion pipe length are to be built according to the specifications of the respective radiator manufacturer. The radiator can be easily disassembled by separating the immersion pipe in the screw connection. The flow direction marked on the single pipe valve should be followed, since the flow through the radiator is not optimal with a switched connection. 5

6 IMI HEIMEIER / Thermostatic heads and Radiator valves / Thermostatic valve bodies for single pipe heating systems Contruction Single pipe valve with immersion pipe 1. Regulating cone 2. Diaphragm plate 3. Return / Shut-off Sample application 1. Single pipe valve with immersion pipe 2. Radiator 3. TA STAD balancing valve Note The composition of the heat transfer medium should be one which avoids damage or the accumulation of stones in hot water heating systems, in accordance with VDI guide line For industrial and long-distance energy systems, see applicable codes VdTÜV and 1466/AGFW 5/15. Heat transfer media containing mineral oils or lubricants containing mineral oil can have seriously negative effects on the source apparatus and usually lead to the disintegration of EPDM seals. When using nitrite-free frost and corrosion resistance solutions with an ethylene glycol base, pay close attention to the details outlined in the manufacturers documentation, particularly details concerning concentration and specific additives. The thermostatic valve bodies fit all IMI Hydronic Engineering thermostatic heads and thermal or motor-driven actuators. Tune components appropriately to guarantee maximum safety. When using actuators from other manufacturers, make sure that the regulating power is appropriate for thermostatic valve bodies with soft-seal valve heads. 6

7 Articles Single pipe valve with immersion pipe Valve body of a single pipe valve With blue protection cap Nickel-plated gunmetal Ø 11 +0,5 mm Immersion pipe Mounting the immersion pipe: Screw off the screw nipple from the single pipe valve and completely screw on the immersion pipe with the long side in the nipple of the cone side (bead). The immersion pipe must end flush on the cone side of the screw nipple. Thread reach 85 mm Thread reach 250 mm Diaphragm plate for DIN, pipe and narrow tube radiators absolutely required Compression fitting for plastic, copper, precision steel or multi-layer pipes see Accessories. 7

8 IMI HEIMEIER / Thermostatic heads and Radiator valves / Thermostatic valve bodies for single pipe heating systems Accessories Compression fitting for copper or precision steel pipe. Connection male thread G3/4. Metal-to-metal joint. Nickel plated brass. For pipe wall thickness of 0,8 1 mm supporting sleeves must be used. Pay attention to pipe manufacturer s details. Supporting sleeves for copper or precision steel pipe with a wall thickness of 1 mm. Ø Pipe Ø Pipe L 12 25, , , , Compression fitting for copper or precision steel pipe. Connection male thread G 3/4. Nickel plated brass. Soft sealed. Ø Pipe Compression fitting for plastic pipes. Connection male thread G 3/4. Nickel-plated brass. Ø Pipe 14x x x x x Compression fitting for multi-layer pipes. Male thread connection G 3/4. Nickel-plated brass. Ø Pipe 16x x Double rosette white plastic, can be divided in the centre, for various pipe diameters, distance between center points 58 mm, total height max. 31 mm. Length adjustment fitting For clamping plastic, copper, precision steel or multi-layer pipes. For valves with male thread connection G 3/4. Brass nickel-plated L G3/4 x G3/ G3/4 x G3/

9 S-connection For compensating different pipe distances, e. g. when replacing old single pipe valves. Note flow direction! Brass, nickel-plated. Axial Total distance length [mm] [mm] G3/4 x G3/4 11, Thermostatic insert for single pipe valve Substitue insert. Line of product since June Thermostatic insert for single pipe valve with immersion pipe Modified insert, line of products up to May Replacement insert for modifying a microthermal single pipe valve (immersion pipe line) into a thermostatic model. Use only in connection with thermostatic head with remote sensor or control Attention: microthermal single pipe manual valves in universal production are to be retrofitted according to the principle of the E-Z System to thermostatic valves. To do this, the angle clamp compression fitting in the radiator supply pipe is to be replaced with a flow through thermostatic valve body with bend nipple (art. no ). The microthermal manual insert is to be replaced with the above-mentioned special insert (art. no ). For further information, please contact the factory. Special insert for replacing the manual regulator top part with the single pipe manual regulator valve in the universal production line. Water division 50/50. Union threading for the circular pipeline Union nut Screw nipple R 1/

10 IMI HEIMEIER / Thermostatic heads and Radiator valves / Thermostatic valve bodies for single pipe heating systems Technical data % 3,5 U k v = 2,01 k v = 2, , , Δp [kpa] 0,2 0, Δp [mbar] Δp [mm WS] ª R (xp 2K) Equivalent pipe lengths [m] Kv 12 x 1 14 x 1 15 x 1 16 x 1 18 x 1 2,01 1,3 3,4 5,1 7,7 14,9 2,50 0,8 2,2 3,3 5,0 9,6 Copper pipe t = 80 C (176 F) v = 0,5 m/s 10

11 Setting for the E-Z distributor Turn the regulating cone all the way to the left with a screwdriver to the position 0. Set the required radiator settings by turning the regulating cone to the right (factory setting: 3.5 revolutions 35 % radiator setting). Attention: Before the return shut-off, determine the preset radiator setting (setting U ) by turning the regulating cone all the way to the left. This will insure that the original radiator settings can be reset after the return shut-off. With the thermostatic head and with 2 K actuating variable E-Z distributor and thermostatic valve body DN 15 (1/2 ) Single pipe valve DN 15 (1/2 ) kv-value Permitted operatonal temperature Radiator setting [%] TB [ C] Settings E-Z distributor [U] 4,25 3,50 3,00 2,50 2,25 1,90 1,50 0 Permitted operational pressure 2,15 2,01 1,91 1,80 1,71 1,57 1,44 1,42 1) 120 2) 10-2, ) 10 PB [bar] 1) Two pipe operation, without thermostatic valve body 2) with protection cap or actuators 100 C with immersion pipe DN 15 (1/2 ) Sample calculation Goal: Pressure loss in single pipe circuit Given: Heat flow in closed circuit Q = 6510 W Temp. flux in circuit Δt = 20 K (70/50 C) Precision steel pipe O = 15 x 1 mm Length in curcuit I = 25 m Total individual resistors ζ= 7.0 Number of radiators n = 5 Radiator portion m HK = 35% Solution: Mass flow rate in circuit m R = Q / (c Δt) = 6510 / ( 1,163 20) = 280 kg/h Pressure drop in line R = 3.6 mbar/m (v = 0.6 m/s) Pressure loss in line Δp R = R I = = 90 mbar Pressure loss individual resistors Z = 5 ζ v 2 = = 12.6 mbar Pressure loss E-Z System Δp V = 19.4 mbar Pressure loss single pipe-flow circuit Δp ges = Δp V n + Δp R + Z = = 200 mbar 11

12 IMI HEIMEIER / Thermostatic heads and Radiator valves / Thermostatic valve bodies for single pipe heating systems Dimensions E-Z System for single pipe and two-pipe pipe heating systems Required length for the precision steel pipe Z: Z = A (Z 1 + Z 2 ) Z 1 = 30 Z 2 = 78 Z = A (Z 1 + Z 2 ) Z 1 = 30 Z 2 = 13 Single pipe valve with immersion pipe G 1/ mm = 0,0394 inch The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by IMI Hydronic Engineering without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit Thermostatic valve bodies for single pipe heating systems ed