three-way mixing valve

Transcription

1 three-way mixing valve with or without presetting, for heating and cooling systems. Pressurisation & Water Quality alancing & Control Thermostatic Control engineering avantage Three-way mixing valve, with or without presetting, for mixing volume flows in heating and cooling systems.

2 Technical description Three-way mixing valve, with or without presetting, for mixing volume flows in heating and cooling systems, made of gunmetal, with protection cap. Stainless spindle with double O-ring sealing. Outer O-ring can be exchanged without draining the system. Models: flat sealing, and flat sealing with T-piece. Connection with threaded, soldering, or welding nipples. Models: conically sealing N, G /4 male thread. Connection with HEIMEIER compression fittings for plastic, copper, precision steel, or multi-layer pipes. Operating temperature C to C; with protection cap or actuator up to 0 C. Admissible operating over-pressure P bar. Max. admissible differential pressure: N =. bar N = 0.7 bar N = 0. bar N = 0. bar Assembly Three-Way mixing valve (black protection cap) Three-Way mixing valve with presetting (white protection cap). Thermostatic insert. Corrosion-resistant gunmetal body. Thermostatic insert with presetting 4. Setting key A A A A models with or without presettin ideal for supply temperature control with actuator EMO / for all HEIMEIER thermostatic heads and actuators corrosion-resistant gunmetal body universal connection possibilities Function Thermostatic heads (brochure: Thermostatic Head K with contact or immersion sensor and/or thermostatic heads) are used for proportional control without auxiliary power. When the temperature rises, the angled -A passage is closed, and the straight A-A passage is opened. The EMO, EMO EI, EMOLON, and/or EMO / EMO / motorized actuators are used for proportional and/or three-step control with auxiliary power (brochure: EMO, EMO EI, EMOLON). The EMO T (brochure: EMO T) thermal actuator is used for two-step control with auxiliary power. In the model normally open (NO), the angled -A passage is open without, and the straight A-A passage is closed without current. In the model, normally closed (NC), the angled -A passage is closed without current, and the straight A-A passage is open without current. The models with continuously adjustable presetting enable the adjustment of the necessary volume flow in the A outlet. To preset, the setting key is slipped onto the valve insert, and the desired value is set. The setting values are displayed on the front of the valve insert. Without an instrument, the presetting cannot be manipulated by unauthorised persons.

3 Application With EMO T thermal actuator normally open (NO), or with motorized actuator EMO //EI/LON ) Principle - Heating mode ) With thermostatic head or with EMO T thermal actuator normally closed (NC) Mixing function Admixture control in heating or cooling systems. Variable volume flow in the primary circuit. Constant volume flow in the secondary circuit. Mixing function A A Mixing function A A istributing function Power control in heating or cooling systems by means of flow rate control. Constant volume flow in the primary circuit. Variable volume flow in the secondary circuit. istributing function A A istributing function ) A A ) For cooling, the connection of inlets A and must be exchanged. ) The effective direction of the EMO //EI/LON motorized actuators is determined by the controller or the connection. ) For Return temperature increase with thermostatic head, the connection of inlets A and must be exchanged. Sample application C A E. Globo P. Floor heating circuit manifold. Oil/gas boiler 4. Radiator. Fan/coil unit 6. Solid-fuel boiler 7. Solar collector 8. Combined solar storage tank 9. Primary circuit. Secondary circuit A. supply temperature control for floor heating circuit manifolds with thermostatic head K with contact sensor.. water-side control of fan-coil appliances (air-conditioning systems / fan-coil units), e. g. with EMO T (NO). C. heating support for bivalent solar facilities with EMO T (NO), for example. Admixture control in the heating circuit with EMO /, for example.. supply temperature control by means of admixture control in the heating circuit with EMO /. E. return temperature increase for solid-fuel boilers with thermostatic head K with contact sensor. Information To prevent damage and incrustation in hot water heating systems, the composition of the heat transfer medium should meet VI [German Engineer Association] directive. The instruction leaflet of the VdTÜV [German Association of Technical Inspection Authorities] 466/AGFW FW must be observed for industrial and long-distance energy systems. Mineral oil or mineral-oil based lubricants of all kinds in the heat transfer medium lead to considerable swelling and, in most cases, to a failure of EPM seals. When using non-nitrite anti-freeze and anti-corrosive agents based on ethylene glycol, please read the respective particulars-especially on the concentration of the individual additives-in the manufacturer s documentation.

4 Articles Three-way mixing valve without presetting (black protection cap) N Flat sealing N With T-piece, Flat sealing N Conically sealing. Male thread G/ Three-way mixing valve with presetting (white protection cap) N Flat sealing N With T-piece, Flat sealing N Conically sealing. Male thread G/ Accessories Setting key for activating the three-way mixing valve with presetting. For thermostatic valve body also V-exakt/F-exakt V-exakt F-exakt hahn Luft- Universal key as an alternative to the setting key (art. no. -0.4), for activating the three-way mixing valve with presetting. Also for thermostatic valve bodies V-exakt/F-exakt, thermostatic head (temperature setting), Regulux lockshield, Vekolux double connection fitting, and radiator air vents

5 Accessories Flat sealing Connecting nipple for flat sealing three-way mixing valves N valve Ø Pipe Threaded nipple (/ ) R / (/4 ) R / ( ) R ( /4) R / Soldered nipple (/ ) (/ ) (/ ) (/4 ) ( ) / /4 ) Melded nipple (/ ), (/4 ) 6, ( ), ( /4 ) 4, Accessories Conically sealing Compression fitting for copper or precision steel pipe. Connection male thread G/4. rass nickel-plated. With a pipe wall thickness of 0.8- mm insert supporting sleeves. Heed pipe manufacturer s technical advice. Ø Pipe Support sleeve for copper or precision steel pipe with a mm wall thickness. rass nickelplated. L Ø Pipe, , , , Compression fitting for copper or precision steel pipes. Soft sealed. rass nickel plated. Male thread connection G /4. Ø Pipe Compression fitting for plastic pipes. rass, nickel plated. Male thread connection G /4. Ø Pipe 4x -4. 6x -6. 7x -7. 8x -8. x -. Compression fitting for multi-layer pipes. Nickel-plated brass. Ø Pipe 6x -6.

6 Technical data iagram Three-way mixing valve, kvs values N (æ 6,40) N (æ 4,60) N (æ,) N (æ,) , 0, p [kpa] 0, 0, ª p [mbar] p [mm WS] kv value with thermostatic head ) Kvs ) Permitted operating temperature T [ C] Permitted operating over-pressure P [bar] Permitted differential pressure under which the valve still closes Δp [bar] N,40,, N with T-piece,40,, N,90, 0,7 N with T-piece,90, 0,7 N,60 4,60 0, N, 6,40 0, ) The kv value corresponds with the flow in angular direction -A or in straight direction A-A when the valve cone is in the middle respectively. The mixing ratio is then %. ) The Kvs value corresponds with the flow in angular direction -A when the valve is fully open, or with the flow in straight direction A-A when the valve is closed. Calculation example Required: Pressure loss Δp V Given: Three-way mixing valve N with actuator (add-mixing control) heat flow º = 48 W supply temperature primary circuit t v = 70 C return temperature secondary circuit t r = C Solution: Mass flow ª = º /(c Δt) = 48 / (,6 ) = 8 kg/h Pressure loss from diagram Δp V = 4 mbar 6

7 iagram, three-way mixing valve with presetting, kvs values N N kvs [m /h] 0 kvs [m /h] , 0, 0, 0, p [kpa] 0, 0, ª p [mbar] p [kpa] 0, 0, ª [kg/h] p [mbar] Presetting Permitted operating temperature T [ C] Permitted operating over-pressure P [bar] 4 6 N kv value with thermostatic head ) 0,0 0,08 0, 0,9 0,7 0,8, kvs value ) 0,0 0, 0, 0,6 0,70,, Admissible differential pressure under which the valve still closes Δp [bar] N kv value with thermostatic 0,6 0,8 0,47 0,7 0,8, 0,7 ) head kvs value ) 0, 0, 0,9,4,6, 0,7 ) The kv value corresponds with the flow in angular direction -A or in straight direction A-A when the valve cone is in the middle respectively. The mixing ratio is then %. ) The Kvs value corresponds with the flow in angular direction -A when the valve is fully open, or with the flow in straight direction A-A when the valve is closed. Calculation example Required: Presetting value for three-way mixing valve N with actuator (admixture control) Given: Heat flow º = 9 W supply temperature primary circuit t v = 70 C return temperature secondary circuit t r = 40 C Pressure loss Δp V = 4 mbar Solution: Mass flow ª = º / (c Δt) = 9 / (,6 ) = 70 kg/h c v = k v 0,86 k v = c v 0,86 Presetting value as per diagram: 7

8 imensions flat sealing SW flat sealing, with T-piece SW conically sealing L H L L H L L4 H L N L L L L L4 H SW G/4 6, 40 8, 6,0 G 7, 60,0 7 G /4 84 4,0, 47 G / 98 49,0, L l Threaded nipple R/ 7,, R/4, 4, R 6,8 R /4 6, 9, L l Soldering nipple L d Welding nipple,8 7 6, 40, 4 8 4,8 4 4 The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by TA Hydronics without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit partner in your country