RS Series. Three way rotary valves for temperature control systems

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1 RS Series Three way rotary valves for temperature control systems

2 R S RS Three way rotary valve for temperature control systems RS 3-way rotary valve for temperature control systems High Efficiency Mixing and Diverting Valve RS Valves are 3-way control valves provide a high degree of accuracy and repeatability for accurate temperature control. They consist of a valve body with rotary plug and a quarter-turn electric actuator suitable for heavy duty service, equipped with a complete drive and control panel for a power unit, 4-20 m remote control signals driven or locally operated. s an alternative, variants are available, including the use of pneumatic actuators. SPIRX-SRO RS valves have been designed and built for very low operating forces with higher overall flow capacities, resulting in lower pressure losses and in the possibility to select valves with lower dimensions than the equivalent globe valves. RS 3-way rotary valves are suitable for mixing or diverting service for a wide range of flowrates and for a variety of fluids such as mains water, glycoled water, lubricating oils and hydraulic oils. Piping design can be simplified, providing low installation cost, through the compact valves design and the selectability of the rotation direction depending on the operating mode. RS 3-way rotary valves dditional features: Reliability Non-fouling, non-sticking design Easy maintainability ompact size Fine adjustment Mixing or diverting flow capability Drive and control panel fitted as standard Reversible action valve Handwheel for manual override Position indicator Sizes: DN100 - DN400 Fig. 1

3 spiraxsarco.com pplications For Refineries, hemical Plants & Exhaust Oil Regeneration: Heat Revcovery from Steam Generators ooling Systems Heating Systems ondensing Systems For Engines, Turbines, Gear oxes & Heat Exchanges: harge ir ooling Secondary ooling Systems Preheating of Fuel & Lube Oil o-generation ooling of Engine Jacket ompact size plus a reliable, long-life operation, in combination with a complete range of electronic control devices, make the RS 3-way Rotary Valve the best choice for almost all temperature control applications with by-pass line. Fig. 2 - RS 3-way valve 3

4 R S RS 3-way rotary valve Principles of operation Operation of the 3-way rotary valve is simple and straightforward: ccording to the application the service of the valve can be: diverging or converging. Diverting Valve: flow enters the common port or and flows out of the other ports depending upon the position of the rotor. Mixing Valve: flow enters from and or and depending upon position of rotor and leaves through the common port. ll sizes have an external position indicator.valve action can be reversed without removing the valve from the line and without additional parts. Fig. 3 - Diverging Valve Fig. 4 - onverging Valve Table 1 - Specification Type RS Fluids - Mains water - Glycoled water - Lubricating oil - Hydraulic oil Valve size and ctuator ombinations Output Torque Operating times 50 Hz 60 Hz Electric ctuators DN SxS mod. SG1 230V-3Ph-50/60 Hz 100 Nm 15 s 13 s DN SxS mod. SG2 230V-3Ph-50/60 Hz 300 Nm 36 s 30 s DN SxS mod. SG3 230V-3Ph-50/60 Hz 1000 Nm 40 s 33 s ody Material Nodular ast Iron EN1563 GJS LT Rotor Material ronze DIN1705 usn5zn5pb5 Shaft Material Stainless Steel STM 351 F8M over material Stainless Steel STM 216 W Gaskets O rings Viton Sizes DN DN onnections UNI-DIN PN6 UNI-DIN PN10-16 Inlet Pressure 6 bar (maximum) bar (maximum) according to flanges Differential Pressure Through the valve: - Full port - 15 psi max Max Leakage Rate Temperature Range ccessories coming with the actuator - Diverting Valve ll sizes: - Mixing Valve SxS Motor Drive Unit - 1,6% - 1,8% - Local temperature ontrol Options: - Pneumatic ctuation - Other types of flange connections and electric power supplies rranged for 4-20 m input signal from the controller and 4-20 m output signal of valve position N..: On request the electric actuator can supply with, 380V or 440V and 50 or 60 Hz.

5 spiraxsarco.com Table 2 - Valve onfigurations DIVERTING SERVIE MIXING SERVIE Table 2 configuration shows the valve rotor in the 4 m or 0,2 bar (3 psi) position, which also corresponds to the position of the signal failure. Table 3 - K VS Flow rate coefficients Full Port DN100 DN150 DN200 DN250 DN300 DN350 DN400 K VS Table 4 - Valve nomenclature guide Description Example Valve size DN100, 125, 150, 200, 250, 300, 350, 400 DN250 Valve Model RS RS ody / Rotor / Shaft / Gasket / Materials 7 = S. G. Iron / ronze / Stainless steel / Viton 7 onnection 3 = Flanged 3 onfiguration (see Tab. 3) Stem sealing material onverging Diverging = Viton M-M-M-MD D-D-D-DD Rotor size 0 = Standard full port 0 Flow oefficient K VS (to be specified) K VS = 1836 onnection type PN6 PN10 PN6 PN16 ctuator Model SG1 = for DN valve sizes SG2 = for DN valve sizes SG3 = for DN valve sizes SG2 M Valve spares lways order spares by using the description given in the Tab. 5 vailable Spares. lso state the information shown in the RS series Valve nomenclature guide, the serial number Table 5 - vailable spares Description Item Valve gaskets kit 5 Rotor, shaft, bushes, kit 3, 4, 6 usches 6 Fig

6 R S Dimensions F E G H D M L Fig. 6 mod. SG1 - DN F E D M G H L Fig. 7 mod. SG2 - DN F E D G H M L Fig. 8 mod. SG3 - DN

7 spiraxsarco.com P O S R N Q Fig. 9 mod. PM - DN Dimensions (in mm) Table 6 - Valve body and dimensions Flanged PN6 Flanged PN10 Flanged PN16 DN n on Φ n on Φ n on Φ G G G holes Φ holes holes Φ holes holes Φ holes * * Local Normatives can restrict the use with oils. Table 7 - Electric and pneumatic actuators dimensions DN Electric ctuators Double Effect Pneumatic ctuators Simple Effect D E F H L M N O P Q R S N O P Q R S Weights (approximate in Kg) Valve Size DN100 DN150 DN200 DN250 DN300 DN350 DN400 Electric ctuator Pneumatic ctuator (Double Effect) Pneumatic ctuator (Simple Effect)

8 spiraxsarco.com Global coverage Operating companies Sales offices Distributors Spirax-Sarco S.r.l. Via per inisello, Nova Milanese (M) Tel.: Fax: G7.400-E Issue opyright 2014 Spirax Sarco is a registered trademark of Spirax-Sarco Limited

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