pressure independent control valve automatic flow n.
Skip this Video
Loading SlideShow in 5 Seconds..
Download Presentation


42 Vues Download Presentation
Télécharger la présentation


- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. PRESSURE INDEPENDENT CONTROL VALVE AUTOMATIC FLOW LIMITING VALVE Precision Flow Balancing with 100% Authority for Consistent Optimal Energy Efficiency


  3. Company History • Founded by retired Navy pilot Joseph R. Martin. • 1961 - J. Robert Martin Inc. was formed and quickly became the leader in distributing plumbing and heating products in the Midwest. • 1984 - Jomar International Ltd. was formed and a partnership with Fratelli Pettinaroli Spa. was created to engineer and product quality plumbing products. • 1995 - Hydronic Components Inc. was formed to better serve the specialized commercial hydronic market with innovative valves & valve packages. • 2008 - Evosolar was formed to service the renewable energy market and provide a single source solution for solar water heating products & systems for the commercial and residential market. • 2010 - The Jomar Group was formed to ensure that each division is committed to providing the widest range of innovative products and services without compromising on quality. Jomar Group Corporate Headquarters : Warren Michigan

  4. Contents • EvoPICV – The Evolution in Hydronic Balancing • EvoPICV Video • Introduction to EvoPICV • How it works • Temperature Control • Competition Comparisons • Flow Rate and Start-up Pressure • Features & Options • Dimensional Data • Quality • Quality System • Testing • Actuators • Assembly • Types • Compatibility • Installation & System Benefits

  5. EvoPicv – The Evolution in Hydronic Balancing

  6. Introduction to EvoPICV & Evo Automatic EvoPicv Pressure Independent Control Valve is combined full stroke, full authority equal percentage temperature control valve, differential pressure regulator and a constant flow limiter. EvoPICV is suitable for use in both variable and constant speed systems. EvoPICV & Evo Automatic are suitable for application like: Fan-Coils Chilled Beams Radiant Panels and Radiators Air-Handling Units Heat Recovery Units Over-Door Heaters Fin Tube Unit Heaters Convectors Heat Pumps Cabinet Unit Heaters Unit Ventilators Duct Coil

  7. Why EvoPICV , Why HCi ? • Easy Selection -Sizing consideration is based only on the flow rate. • Externally Adjustable Flow Rate - Save time by presetting, commissioning or adjusting the flow rate without removing the controller. • Wide Range of Controllers - Suitable for many applications due to the wide range of available actuators by HCi and qualified controls manufactures. • Reduced Capital Outlay - Saves on installation time and space by eliminating the need for individual terminal balancing and temperature control valves • Reduces Wasted Energy - Delivers guaranteed flow rate with full stroke equal percentage temperature control while maintaining full valve authority. • Reliable Quality - Each valve is 100% tested in production then is serialized for identification. • Full Package Resource Provider - HCi can provide a fully equipped hydronic valve package that has been 100% tests, bagged & tagged for each custom terminal unit.


  9. How it Works Evo Automatic & EvoPICV are made of these main parts: Regulation Valve for Flow Adjustment – Brass CW602N, Stainless Steel Differential Pressure Regulating Cartridge – High resistance polymer, EPDM, Stainless Steel AISI 303 Valve Body – Brass CW602N Presetting Ring – High resistance polymer, Brass CW602N Gaskets – EPDM-x A D B C

  10. How it Works Differential Pressure Regulating Cartridge The differential pressure regulator is the heart of the pressure independent control valve, by keeping a constant differential pressure across the valve seats constant flow and full authority temperature control can be achieved. Incoming pressure P1 is transmitted to the top face of the diaphragm, outgoing pressure P3 is transmitted to the underside of this same diaphragm. A constant effective differential pressure is maintained between P2 and P3. As P1 increases relative to P3 it acts on the diaphragm closing the shutter (A) against a seat (B) thereby lowering the effective differential pressure. As P1 decreases relative to P3 the diaphragm acts to open the shutter (A) from the seat (B) thus increasing the effective differential pressure. The diaphragm acts against a spring in order to balance the pressure control and stop the diaphragm oscillating. Water flow through a valve varies as a function of the area of passage and the pressure differential across that valve. Due to the incorporation of the differential pressure regulator the differential across the valve seats P2-P3 is constant meaning the flow is now only a function of area of passage. P2 P1 P3 A B Housing Diaphragm Spring Housing

  11. How it Works Temperature Control Valve The temperature control element of the valve consists of an oblique pattern globe valve the differential pressure (P2-P3) across which is held constant by the differential pressure regulator. The authority (n) of a valve can be calculated from the pressure drops across that valve compared with the local system. In this case written as; Pa n = --------------- Pa + Pb In the case of a Pressure Independent Control Valve the system Pb is close to 0 meaning that the authority is very close to 1. Pa + Pb P2 P3 Pa

  12. How it Works Regulation Valve for Flow Adjustment In order to preset the maximum flow rate of the valve a second seat is used, again the differential pressure across this seat is held constant (P2-P3). The area of passage is changed by moving the hand wheel causing a profiled disc to move against a fixed seat thereby adjusting the flow. Figure 1: Lift the lock pin unlock the selector Figure 2: Turn the selector to the target position Figure 3: Press the lock pin to lock the selector in the final position P2 Figure 1 Figure 2 Figure 3 P3 Movable Seat Fixed Seat

  13. How it Works Regulation Valve for Flow Adjustment To calculate the design flow rate as a percentage of the nominal(maximum) valve flow rate, this value will be used in setting the valve. For example: A design flow rates of 3.3 is required and the ½” High (maximum nominal flow rate of 3.5 GPM) has been selected, the hand wheel setting is calculated as follows:

  14. How it Works General Dynamic Flow Control Performance Figure A. describes the general flow performance of the valve as the differential pressure changes. It can be seen that before the start-up pressure is achieved the flow rate increases almost as a fixed orifice valve. Once the start-up pressure has been achieved the valve controls the flow within the set point range. Values stated for the start-up pressure are calculated with the valve in the fully open position as the lowest differential pressure at which the valve will give a constant flow (±5% of nominal). It should be noted that for a particular pressure a range of flows (within ± 5% of the nominal) can be produced depending on if the pressure is rising or falling. This hysteresis effect is typical of all dynamic balancing valves due to the internal tolerances of the pressure regulator. When designing the pipe system the start-up pressure should be used as the nominal resistance of the valve for pump sizing purposes.

  15. How it Works Flow Rate Performance : Evo Automatic & EvoPICV - 0.5 Valve Differential Pressure : 0 - 100kPa / 0 - 14.5 PSI Flow Rate : 0 - 0.2 l/s / 0 - 3.17 GPM Start up Pressure : 20kPA / 2.9 PSI

  16. How it Works Flow Rate Performance : Evo Automatic & EvoPICV - 0.5 Valve Differential Pressure : 0 - 600kPa / 0 - 87.02 PSI Flow Rate : 0 - 0.2 l/s / 0 - 3.17 GPM Max Pressure : 414kPA / 60.0 PSI


  18. Temperature Control Flow Characteristics The valve characteristics is a measure of the rate at which the valve controls flow in relation to its opening position, authority is a measure of how well a valve performs in relation to its characteristics curve when in use. Figure C1. Describes an ON/OFF or quick acting valve characteristic, it can be seen that flow rate increases rapidly until 30% of the valve stroke and then slowly thereafter. Figure C2. Describes a Linear valve characteristic, flow rate increases in direct linear proportion to the valve stroke. Figure C3. Describes an Equal Percentage (modified logarithmic) EvoPICV valve characteristic. It can be seen that flow rate increases slowly until the valve stroke is approximately 70% and thereafter flow rate increases rapidly.

  19. Temperature Control General Dynamic Flow Control Performance It is generally desirable that the power output of a coil is linear in relation to the valve stoke as this results in the most easily controllable situation. Figure D1. Describes the system response (power output of a coil vs. valve stroke) when a quick acting or ON/OFF valve is used. It can be observed that the power output rises to over 95% before the valve is more than 20% open. Figure D2. Describes the system response when a linear valve is used, it can be seen that power output rises quickly for the first 50% of valve stroke and thereafter the rate of change decreases. It can also be seen that 95% of the power output is achieved with a valve stroke of approximately 80%. Figure D3. Describes the system response when an equal percentage valve is used, it can be observed that power output increases linearly with increasing valve stroke.

  20. Temperature Control Flow Characteristics : EvoPICV - 0.5 Valve

  21. Temperature Control Control Valve Authority Control valve authority is a mathematical representation for how a control valve will perform in circuit. In general it is a ratio for what the full load pressure drop is on the control valve with respect to the full load pressure drop of the entire circuit including the control valve. The video illustrate the membrane in action of the EvoPICV.  If the differential pressure across the valve increases, the membrane will immediately be pushed down and close the pressure controller.  If the differential pressure decreases, the membrane will instantly move up again.  Therefore a maintaining a constant ∆p across the control valve and results in accurate flow limitation and 100% authority.


  23. Flow Rate and Start-up Pressure

  24. Features & Options

  25. Dimensional Data

  26. Quality Control

  27. Quality

  28. Quality Fratelli Pettinaroli Spa. World Head Quarters : Novara, Italy Founded in 1938 Fratelli Worldwide Operating Partners : Jomar Group : United States Pettinaroli A/S : Denmark Pettinaroli S.A.S : France Pettinaroli Suisse S.A : Switzerland TSM : Italy ISO 9001 : Quality Management System ISO 14001 : Environmental Management System

  29. Quality Evo Automatic & EvoPICV : Testing & Validation Products are 100% tested with air at 87 PSI & 14.5 PSI to discover any defect during the assembly. After the test a successful test, 9 digits are printed on the body as followed. All test results are digitally stored at the factory and test results can be recalled if needed. YY DDD MMMM YY = Year DDD= Day MMMM= Manufacturing Serial Number Example: 11 096 033 33rd valve of the day 96th day of the year 2011 production year

  30. Actuator Assembly & Compatibility

  31. Actuator Assembly The interchangeable Advantage The Evo valve body can be equipped with a complete range of interchange able control valve actuators or used as a stand alone constant flow limiter without an actuator. HCi offers a wide range of actuators that can be factor pre-assembled. The Evo valve body can also be use with other compatible actuator suppliers that have been certified by Pettinaroli with the use of a mounting ring. Instructions for Thermal Actuator Assembly Instructions for Electro Mechanical Actuator Assembly

  32. Standard Actuators EvoPICV Controllers – Electric Gear Non-Spring Return - Syncube Ambient Temperature: 40°F - 120°F non-condensing • Input Voltage 24Vac • 60/50hz +10% -5% • Consumption: 45mA, 1Va., Enclosure IP51 • Approvals meet CE and ROHS • Low voltage Class II 24 Vac device

  33. Standard Actuators EvoPICV Controllers – Electric Gear 2-Position ON/OFF Spring Return Zone Valve - Power Cube Ambient Temperature: 40°F - 120°F non-condensing • Spring Up / Down Return • Input voltage 24 Vac, 110 Vac • 60/50hz +10% -5% • Consumption: 8Va, 0.3A at 24 Vac • Enclosure IP20 (NEMA 1) • Approvals meet CE and ROHS • UL and CSA Approved

  34. Standard Actuators EvoPICV Controllers - Electric Gear Modulating Spring Return Control Valve - Power cube Ambient Temperature: 40°F - 120°F non-condensing • Spring Up / Down Return • Input voltage 24 Vac, 110 Vac • 60/50hz +10% -5% • Consumption: 6 Watts • Approvals meet CE and ROHS Class 2 per UL and CSA

  35. Standard Actuators EvoPICV Controllers - Pneumatic Zone Control Valve Ambient Temperature: -20°F - 220°F non-condensing • Spring Return, nominal spring range • MP5100 - 3 - 6 PSI / MP5300 - 7 - 11 PSI • Max Air Pressure: 50 PSI • Air Connection 5/32” and 1/4” Barb

  36. Standard Actuators EvoPICV Controllers - Thermoelectric Wax Zone Control Valve Ambient Temperature: 40°F - 105°F • Fail safe • Input Voltage 24 Vac • 60/50hz +10% -5% • Control Input: ON/OFF PWM • Consumption: 3 Watts • Enclosure IP54 • Run Time 210 seconds • Conforms to CE and ROHS Class 2 per UL and CSA EvoPICV Controllers - Thermoelectric Self-Acting Control Valve Ambient Temperature: 40°F - 85°F • Temperature Setting Scale 1 - 5 • Set Point Memory Clip • Freeze Protection Setting • Direct Coupled • Remote Bulb • Wall Mount Sensor

  37. Compatible Actuator Manufactures Control Valve Stem & Stroke Specifications ½” – 1” Standard Connection M28 x 1.5 ½” – 1” Full Stroke Range 3MM Can be adapted to other control manufactures using a M30 x 1.5 mounting ring. Compatible Manufactures Spartan Peripheral Devices Mohlenhoff Sauter Controls Manufactures Undergoing Testing Johnson Controls Siemens

  38. Installation & System Benefits

  39. Installation & System Benefits • The EvoPICV is a True Costs Saving Product • Saves on Installation Cost • Reduces the number of system components by combining the temperature control valve with an automatic or flow limiting valve. • Saves on Space • Small compact design allows the valve to be easily close coupled to the terminal unit. • Saves Time on Balancing & Commissioning • Each EvoPICV can be factory pre-set and no proportional balancing is required. • Simple Sizing • Size by flow rate and pipe size. No authority calculations need to select the product. • Flexibility • Field adjustable flow rates can be easily accommodated late design changes. • Saves on Energy • Full Authority control valve and equal percentage control guarantees that each valve is getting the required design flow rate. • Complete Turn Key Valve Package Provider • Save procurement time, delivery cost, installation time with HCi’s bag & tag service and complete supply & return piping packages.

  40. Thank you...