Differential Pressure Control Valve

Transcription

1 Differential Pressure Control Valve

2 2

3 Table of contents Chapter Ballorex Delta DHC DN Safety instructions Rules/regulations Intended use Initial operation Working on the system Liability 5 2. Introduction Description Benefits Design Pressure balancing With partner valve Mounting Operation Applications Product data sheet Product finder Ballorex Delta DHC DN Ballorex Delta DHC DN with partner valve Ballorex Delta DHC DN Flow diagrams Valve sizing Valve setting DN Accessoires Sizing examples System with Ballorex Delta DHC and Ballorex Venturi General specifications DN

4 1. Safety instructions Please read the instructions carefully before installation The installation and initial operation of the assembly may be carried out only by an authorised specialist company. Prior to starting work. familiarise yourself with all parts and how they are handled. The application examples in these operating instructions are ideas sketched out. Local laws and regulations have to be observed. Target group: These instructions are intended for authorised specialists exclusively. Work on the heating system. the potable water as well as gas and power network may be carried out by specialists only. Please follow these safety instructions carefully in order to avoid hazards and damage to people and property. 1.1 Rules/regulations Please observe the applicable accident prevention regulations. the environmental legislation and the legal rules for mounting. installation and operation. Moreover. please observe the appropriate guidelines of German standard DIN. EN. DVGW. VDI and VDE (including lightning protection) as well as all current relevant country-specific standards. laws and regulations. Old and newly enforced regulations and standards shall apply. if they are relevant for the individual case. Moreover. the regulations of your local energy supply company have to be observed. Electrical connection: Electrical wiring work may be carried out by qualified electricians only. The VDE regulations and the specifications of the relevant energy supply company have to be met. Excerpt: Installation and construction of heat generators as well as the drinking water heaters: DIN EN Part 1: Water heater and water heating plants for potable and process water. DIN : Heating systems and central water heating systems DIN : Gas. water. waste water installation work within buildings. DIN : Insulation work on technical plants AV B Wa s V Regulations concerning the general conditions for the supply with water DIN EN 806 ff.: Technical rules for potable water installation DIN 1988 ff.: Technical rules for potable water installation (national addition) DIN EN 1717: Protection of potable water against contaminations DIN 4751: Safety equipment Electrical connection: VDE 0100: Erection of electrical equipment. grounding. protective conductor. potential equalisation conductor. VDE 0701: Repair. modification and testing of electrical devices. VDE 0185: General aspects on the erection of lightning protection systems. VDE 0190: Main potential equalisation of electrical plants. VDE 0855: Installation of antenna plants (shall apply mutatis mutandis). 4

5 Additional remarks: VDI 6002 Sheet 1: General principles. system technology and use in house building VDI Sheet 2: Use in students hostels. retirement homes. hospitals. indoor swimming pools and on camping facilities Caution: Prior to any electrical wiring work on pumps and controls. these modules have to be disconnected from voltage correctly. 1.2 Intended use Inexpert installation as well as use for a purpose not intended of the assembly shall rule out all warranty claims. All shut-off valves may be closed by an approved specialist only in case of servicing as otherwise the safety valves are not effective. Do not modify the electrical components. the construction or the hydraulic components! You will impair the safe function of the plant otherwise. 1.3 Initial operation Prior to the initial operation. the plant has to be tested for tightness. correct hydraulic connection as well as accurate and correct electrical connection. In addition. the plant has to be flushed correctly and/as required in keeping with German standard DIN The initial operation has to be carried out by a trained specialist. which has to be recorded in writing. In addition. the settings have to be put down in writing. The technical documentation has to be available at the device. 1.4 Working on the system The plant has to be de-energised and to be checked for the absence of voltage (such as on the separate fuse or a master switch). Secure the plant against unintentional restart. (If gas is used as fuel. close the gas shut-off valve and secure against unintentional opening.) Repair work on component parts with a safety-relevant function is impermissible. 1.5 Liability We reserve all copyrights for this document. Wrongful use. in particular reproduction and forwarding to third parties shall not be permitted. These installation and operating instructions shall have to be handed to the customer. The executing and/or authorised tradesperson (such as fitter) shall have to explain the function and operation of the plant to the customer in an intelligible manner. 5

6 2. Introduction Ballorex Delta DHC Differential Pressure Control Valve (DPCV) DN / Description The Ballorex Delta DHC is a differential pressure control valve. typically used in district heating and district cooling applications. Ensuring a constant differential pressure across motorized valves or static balancing valves. the Ballorex Delta DHC provides conditions for achieving the correct system distribution. The Ballorex Delta DHC valve eliminates at the same time any noise nuisance caused by high differential pressure across two-way control valves. static valves. or other system components. 2.2 Benefits Wide setting range for different applications: System balance ensured regardless of pressure fluctuations Noise problems eliminated Direct installation onto bends and reducers for improved flexibility Robust construction for pressure class PN16 Accurate and easy setting of designed in combination with the Ballorex Venturi or Ballorex Vario Possible to do project handovers in stages due to zone balancing Partial close-downs possible without influencing other parts of the system Easy commissioning saves time and money No overs and unnecessary energy consumption for better thermal comfort 6

7 2.3 Design The Ballorex Delta DHC is installed either in the supply or the return line. The supply line pressure is received above the diaphragm and the return line pressure underneath the diaphragm. through capillary tubes. One capillary tube is to be connected to the drain of a partner valve like the Ballorex Venturi. Ballorex Vario. or Ballorex Basic. and the other capillary tube to a T-piece. When pressure increases in the system. it also increases above the Ballorex Delta DHC actuator diaphragm. This forces the valve cone downwards. and the valve gradually closes. As a result. a constant pressure drop is obtained across the circuit controlled by the Ballorex Delta DHC. The DN valves are single seated. whereas the DN valves are double seated. The medium pressure acts onto the bottom and top surfaces of the cone at the same time. In this way. the forces produced by the medium pressure on the cone are compensated the valve cone is pressure balanced. Without the actuator the valve is held in an open position by means of a spring. With force applied on the spindle the valve will close Capillary tube connection - Higher pressure diaphragm chamber - Diaphragm housing - Lower pressure diaphragm chamber - Spring - wheel - Spindle - Valve housing - Valve cone - Locking ring - Nut - Stud bolt - Gasket - Gasket for actuator - Disc - Spring - Valve seat 7

8 2. Introduction 2.4 Pressure balancing The Ballorex Delta DHC valve is provided with a selection of actuators for different pressure ranges. Depending on the actuator type the Ballorex Delta DHC is factory pre-set at: 50 - actuator for DN actuator for DN actuator for DN actuator for DN The Ballorex Delta DHC valve is set to a required differential pressure by means of the regulating wheel and a setting tool. By rotating the regulating wheel with a setting tool. any differential pressure. within the control range of each actuator. can be provided. 2.5 With partner valve The Ballorex Delta DHC can be used in combination with a Ballorex Venturi. a Ballorex Vario. or a Ballorex Basic. with drain. as a partner valve. In this case one capillary tube is connected to the coupling installed on the drain of the partner valve and the other to a T-piece in the system. Ballorex Delta DHC in combination with Ballorex Venturi as a partner valve. 8

9 The pre-setting of the differential pressure is done by rotating the regulating wheel in the Ballorex Delta DHC. The design is set on the Ballorex Venturi or Ballorex Vario using an Allen key. The Ballorex Delta DHC valve can be installed in the return line. The pressure loss across the Ballorex Venturi partner valve, installed in the supply line, is added to the pressure loss in the controlled circuit. When the Ballorex Venturi is installed in the supply line as a partner valve. it is always in the circuit controlled by the Ballorex Delta DHC. In this instance the pressure loss across the Ballorex Venturi is added to the pressure loss in the controlled circuit and needs to be taken into account when setting the Ballorex Delta DHC valve. The Ballorex Delta DHC can be installed in the supply line. The pressure loss across the Ballorex Venturi (partner valve) installed in the return line is not added to the pressure loss in the controlled circuit. When the Ballorex Venturi is installed in the return line and is used as a partner valve it is not in the circuit controlled by the Ballorex Delta DHC valve. Consequently the pressure loss is not taken into account when setting the Ballorex Delta DHC valve installed in the supply line. When the Ballorex Delta DHC valve is installed in combination with a Ballorex Vario or a Ballorex Basic. the pressure loss across the partner valve is not added to the pressure loss in the controlled circuit. provided that the capillary tube is connected to the drain on the outlet side of the partner valve. If the capillary tube is connected to the drain on the inlet side to the partner valve. the pressure loss must be taken into account when setting the Ballorex Delta DHC (see the application examples 5 and 6 for further details). 9

10 2. Introduction 2.6 Mounting An arrow on the Ballorex Delta DHC valve housing indicates the direction to be respected. The Ballorex Delta DHC can be installed in the return or the supply line. No straight piping before and after the Ballorex Delta DHC is required. The valve can be installed directly at bends. System flushing and pressure testing can be done when the maximum differential pressure setting is provided on the actuator. Maximum test pressure is 16 bar. It is extremely important that both sides of the rubber diaphragm in the actuator are filled with media before start up. If only media has been filled on the upper chamber the pressure can cause severe damage to the diaphragm. After mounting the capillary tubes, the diaphragm chamber has to be vented by loosening the connectors of the capillary tubes. When air is bled and water starts dripping from the capillary tubes, the connectors are tightened. The capillary tubes are to be connected in such a manner that the highest pressure (forward ) is always connected to the diaphragm side where the differential pressure adjustment is made (lower chamber). The lowest pressure (return) is always to be connected to the diaphragm side closest to the valve. To provide the required setting of the Ballorex Delta DHC, the pre-setting wheel is rotated using the setting tool. The differential pressure stabilized by the Ballorex Delta DHC can be verified with the Ballorex Balancing Computer BC2. After connecting one hose to the high pressure port on the Ballorex Venturi (if it is used as a partner valve) and the other hose to the drain valve (provided as an accessory and installed in a T-piece), the Ballorex Balancing Computer BC2 will display the pressure drop in the controlled part of the system. Differential pressure verification is also possible when the Ballorex Delta DHC is combined with the Ballorex Vario or the Ballorex Basic. It is recommended to install isolation valves to be able to service the controlled circuit. During the start-up isolation valves are opened simultaneously slowly and carefully in order to put pressure on both sides of the diaphragm. It is very important to not only put pressure on one side at a time because this will destroy the diaphragm. The differential pressure across the diaphragm must never exceed the set point pressure. 10

11 2.7 Operation The Ballorex Delta DHC valve is designed for district heating and district cooling systems to ensure a constant differential pressure across the motorized valve controlling through the heat exchanger or in a direct heating system. The stabilization of the differential pressure across the motorized valve improves the temperature control function. The motorized valve opens or closes only in response to the temperature signal from the controlled system and not because of the pressure fluctuation that would trigger changes. The Ballorex Delta DHC provides a constant differential pressure across a motorized valve at a heat exchanger. When the Ballorex Delta DHC is combined with a Ballorex Venturi or a Ballorex Vario. the solution can be used as both a constant pressure regulator and as a maximum limiter. This guarantees that the designed is never exceeded and that the motorized valve is operating with the required authority to provide optimal temperature control. The Ballorex Delta DHC provides a constant differential pressure across a motorized valve in a direct heating system. The Ballorex Delta DHC can be also combined with the Ballorex Basic to ensure constant differential pressure across the motorized valve and to be able to service the controlled part of the system or circuit. The Ballorex Basic can be used for verification provided that the pressure loss across the measuring points of this valve is at least 3.0. When the motorized valve is in a fully open position and the pressure loss across the measuring points of the Ballorex Basic is at least 3.0. the designed can be adjusted by providing the required differential pressure setting on the Ballorex Delta DHC. The motorized valve needs to be correctly sized for this application to operate with the desired authority. 11

12 3. Applications Application 1 - Temperature control in a heating system with air handling units The Ballorex Delta DHC installed at a heat exchanger in a central heating system will stabilize the differential pressure across the motorized valve. As a result the motorized valve only reacts to the temperature signal and not to pressure fluctuations. The Ballorex Venturi is used as a partner valve to connect the capillary tube and to limit the maximum. The pressure loss across the Ballorex Venturi needs to be taken into account when setting the Ballorex Delta DHC. Application 2 - Temperature control in an air-condition cooling system The Ballorex Delta DHC installed directly in a cooling system will stabilize the differential pressure. By providing stable working conditions the motorized valve only reacts to the temperature signal and not to pressure fluctuations. The Ballorex Venturi is used as a partner valve to connect the capillary tube and to limit the maximum. The pressure loss across the Ballorex Venturi needs to be taken into account when setting the Ballorex Delta DHC. 12

13 Application 3 - Temperature control in a domestic water system The Ballorex Delta DHC is installed on the primary side of a domestic water system. By stabilizing the differential pressure the desired working conditions for the motorized valve are ensured. The Ballorex Basic can be used as a partner valve to measure the. During commissioning the motorized valve is in a fully open position. When the pressure loss across the measuring points of the Ballorex Basic is at least 3.0, the designed can be verified and adjusted by providing the required differential pressure setting on the Ballorex Delta DHC valve. Application 4 - By-pass across a pump The Ballorex Delta DHC can be used in the pump by-pass (or across supply and return pipes of a circuit). This prevents the pump working against a dead head when all the sub-circuits are closed down. Note: For this application the Ballorex Delta DHC with reverse acting valve needs to be ordered. The valve is provided on request only! 13

14 3. Applications Application 5 - Ballorex Delta DHC in combination with Ballorex Vario or Ballorex Basic When the Ballorex Vario or the Ballorex Basic is used as a partner valve to the Ballorex Delta DHC, the capillary tube must be connected to the drain installed in the P/T port on the outlet side of the valve. In this instance the pressure loss across the partner valve is not added to the pressure loss in the controlled circuit and thus the Ballorex Delta DHC setting must be equal to the differential pressure required for the controlled circuit only. ΔPdHc = ΔPc Application 6 - Ballorex Delta DHC in combination with Ballorex Vario or Ballorex Basic When the Ballorex Vario or the Ballorex Basic is used as a partner valve to the Ballorex Delta DHC, the capillary tube must be connected to the drain installed in the P/T port on the inlet side of the valve. In this instance the pressure loss across the partner valve is added to the pressure loss in the controlled circuit and the Ballorex Delta DHC setting must be equal to the differential pressure required for the controlled circuit and the pressure loss across the partner valve. ΔPdHc = ΔPc + ΔPbv 14

15 4. Product data sheet 4.1 Product finder Ballorex Delta DHC DN Ballorex Delta DHC DN 150 DN 125 DN 100 DN 80 DN 65 DN 50 DN 40 DN 32 DN 25 DN 20 DN ,080 Flow rate m 3 /h 15

16 4. Product data sheet Ballorex Delta DHC DN with partner valve Ballorex Venturi as a partner valve to Ballorex Delta DHC DN 50 H DN 40 H DN 25 H & DN 32 H DN 20 H & DN 25 S DN 15 H DN 20 S DN 15 S & DN 20 L DN 15 L DN 15 UL Flow rate DN 300 DN 250 DN 200 DN 150 DN 125 DN 100 DN 80 DN ,080 Flow rate m 3 /h 16

17 Ballorex Vario as a partner valve to Ballorex Delta DHC DN 50 DN 40 DN 32 DN 25 DN DN Flow rate Ballorex Basic as a partner valve to Ballorex Delta DHC DN bar Pressure drop across valve - ΔPbasic DN 15 DN DN 25 DN 32 DN 40 DN Flow

18 4. Product data sheet Flow range Dimension Differential pressures setting range DN DN 20 DN DN 25 DN DN DN 40 DN DN 50 DN

19 Flow range Dimension Differential pressures setting range DN DN DN DN DN Differential pressure setting range [] Factory setting []

20 4. Product data sheet 4.2 Ballorex Delta DHC DN Dimensions Specifications temperature 120 C at 16 bar, 150 C at 14 bar, 250 C at 13 bar temperature -20 C diff. pressure 1600 bar pressure 16 bar (PN25 on request) Differential pressure setting range 20-80, , , Leakage rate Less than 0.05% of Kvs Marking on valve DN, PN, arrow, Kvs, differential pressure setting range, material Connection Flange EN PN16 Valve housing Cast iron EN-GJS Seat, cone and spindle Stainless steel Spring W. Nr powder coated Nuts and bolts 24 CrMo 4/A4 Stag bolt, set point adjuster and spindle housing St. 42, electroplated Diaphragm housing Steel Diaphragm EPDM O-rings EPDM DN A (mm) B (mm) C (mm) D (diameter) (mm) DN DN DN DN DN DN DN DN DN DN DN

21 Valve Article Dimension Nom. Inch DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 Kvs m 3 /h DN 15 ½ ΔP Range [] DN 15 ½ DN 15 ½ DN 15 ½ DN 20 ¾ DN 20 ¾ DN 20 ¾ DN 20 ¾ DN DN DN DN DN 32 1¼ DN 32 1¼ DN 32 1¼ DN 32 1¼ DN 40 1½ DN 40 1½ DN 40 1½ DN 40 1½ DN DN DN DN

22 4. Product data sheet Valve Article Dimension Nom. Inch DN 65 DN 80 DN 100 DN 125 DN 150 Kvs m 3 /h DN 65 2½ ΔP Range [] DN 65 2½ DN 65 2½ DN 65 2½ DN DN DN DN DN DN DN DN DN DN DN DN DN DN DN DN

23 4.3 Flow diagrams The graphs are used to determine the total pressure loss across the Ballorex Delta DHC at the required. DN 15 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

24 4. Product data sheet DN 20 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

25 DN 25 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

26 4. Product data sheet DN 32 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

27 DN 40 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

28 4. Product data sheet DN 50 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

29 DN 65 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

30 4. Product data sheet DN 80 - flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

31 DN flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

32 4. Product data sheet DN flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow

33 DN flange/flange bar Pressure drop across valve - ΔPdelta dhc Flow m 3 /h 33

34 4. Product data sheet 4.4 Valve sizing The available ranges in reference to the required differential pressure setting on the Ballorex Delta DHC valve are specified in the tables. DN 15 - flange/flange

35 The Ballorex Delta DHC DN 15 can be combined with the Ballorex Venturi DN as well as the Ballorex Vario DN or the Ballorex Basic DN to provide a constant differential pressure in the controlled part of the system. The Ballorex Venturi and the Ballorex Vario combined with the Ballorex Delta DHC also provide the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 15UL Ballorex Venturi with drain For graphs consult chapter Ballorex Venturi DN 15L DN 15S DN 15H DN 20L DN 20S DN 20H DN 25S DN 25H DN 32H DN 40H DN 50H 35

36 4. Product data sheet Partner valve Flow range Dimension Description DN 15 Ballorex Vario with drain For graphs consult chapter Ballorex Vario DN DN DN DN DN 50 Partner valve Kvs Dimension Description m 3 /h 1.80* DN 15 Ballorex Basic with drain For graphs consult chapter Ballorex Basic. 4.65* DN * DN * DN * DN * DN 50 * For quick selection the Ballorex Basic range may be considered equal to the Ballorex Vario range. 36

37 DN 20 - flange/flange

38 4. Product data sheet The Ballorex Delta DHC DN 20 can be combined with the Ballorex Venturi DN as well as the Ballorex Vario DN or the Ballorex Basic DN to provide a constant differential pressure in the controlled part of the system. The Ballorex Venturi and the Ballorex Vario combined with the Ballorex Delta DHC also provide the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 20L Ballorex Venturi with drain For graphs consult chapter Ballorex Venturi DN 20S DN 20H DN 25S DN 25H DN 32H DN 40H DN 50H DN 25H DN 32H DN 40H DN 50H Partner valve Flow range Dimension Description DN 65 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi. 38

39 Partner valve Flow range Dimension Description DN 20 Ballorex Vario with drain For graphs consult chapter Ballorex Vario DN DN DN DN 50 Partner valve Kvs Dimension Description m 3 /h 4.65* DN 20 Ballorex Basic with drain For graphs consult chapter Ballorex Basic. 7.40* DN * DN * DN * DN 50 * For quick selection the Ballorex Basic range may be considered equal to the Ballorex Vario range. 39

40 4. Product data sheet DN 25 - flange/flange

41 The Ballorex Delta DHC DN 25 can be combined with the Ballorex Venturi DN as well as the Ballorex Vario DN or the Ballorex Basic DN to provide a constant differential pressure in the controlled part of the system. The Ballorex Venturi and the Ballorex Vario combined with the Ballorex Delta DHC also provide the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 25S Ballorex Venturi with drain For graphs consult chapter Ballorex Venturi DN 25H DN 32H DN 40H DN 50H Partner valve Flow range Dimension Description DN 65 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi. Partner valve Flow range Dimension Description DN 25 Ballorex Vario with drain For graphs consult chapter Ballorex Vario DN DN DN 50 41

42 4. Product data sheet Partner valve Kvs Dimension Description m 3 /h 7.40* DN 25 Ballorex Basic with drain For graphs consult chapter Ballorex Basic. 15.5* DN * DN * DN 50 * For quick selection the Ballorex Basic range may be considered equal to the Ballorex Vario range. 42

43 DN 32 - flange/flange

44 4. Product data sheet The Ballorex Delta DHC DN 32 can be combined with the Ballorex Venturi DN as well as the Ballorex Vario DN or the Ballorex Basic DN to provide a constant differential pressure in the controlled part of the system. The Ballorex Venturi and the Ballorex Vario combined with the Ballorex Delta DHC also provide the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 32H Ballorex Venturi with drain For graphs consult chapter Ballorex Venturi DN 40H DN 50H Partner valve Flow range Dimension Description DN 65 DN 80 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi. Partner valve Flow range Dimension Description DN 32 Ballorex Vario with drain For graphs consult chapter Ballorex Vario DN DN 50 Partner valve Kvs Dimension Description m 3 /h 15.5* DN 32 Ballorex Basic with drain For graphs consult chapter Ballorex Basic. 25.7* DN * DN 50 * For quick selection the Ballorex Basic range may be considered equal to the Ballorex Vario range. 44

45 DN 40 - flange/flange

46 4. Product data sheet The Ballorex Delta DHC DN 40 can be combined with the Ballorex Venturi DN as well as the Ballorex Vario DN or the Ballorex Basic DN to provide a constant differential pressure in the controlled part of the system. The Ballorex Venturi and the Ballorex Vario combined with the Ballorex Delta DHC also provide the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 40H Ballorex Venturi with drain For graphs consult chapter Ballorex Venturi DN 50H Partner valve Flow range Dimension Description DN 65 DN 80 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN 100 Partner valve Flow range Dimension Description DN 40 Ballorex Vario with drain For graphs consult chapter Ballorex Vario DN 50 Partner valve Kvs Dimension Description m 3 /h 25.7* DN 40 Ballorex Basic with drain For graphs consult chapter Ballorex Basic. 44.0* DN 50 * For quick selection the Ballorex Basic range may be considered equal to the Ballorex Vario range. 46

47 DN 50 - flange/flange

48 4. Product data sheet The Ballorex Delta DHC DN 50 can be combined with the Ballorex Venturi DN as well as the Ballorex Vario DN 50 or the Ballorex Basic DN 50 to provide a constant differential pressure in the controlled part of the system. The Ballorex Venturi and the Ballorex Vario combined with the Ballorex Delta DE also provide the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 50H Ballorex Venturi with drain For graphs consult chapter Ballorex Venturi. Partner valve Flow range Dimension Description DN 65 DN 80 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN 100 Partner valve Flow range Dimension Description DN 50 Ballorex Vario with drain For graphs consult chapter Ballorex Vario. Partner valve Kvs Dimension Description m 3 /h 44.0* DN 50 Ballorex Basic with drain For graphs consult chapter Ballorex Basic. * For quick selection the Ballorex Basic range may be considered equal to the Ballorex Vario range. 48

49 DN 65 - flange/flange

50 4. Product data sheet The Ballorex Delta DHC DN 65 can be combined with the Ballorex Venturi DN to provide a constant differential pressure in the controlled part of the system as well as to ensure the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 65 DN 80 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN DN

51 DN 80 - flange/flange

52 4. Product data sheet The Ballorex Delta DHC DN 80 can be combined with the Ballorex Venturi DN to provide a constant differential pressure in the controlled part of the system as well as to ensure the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 80 DN 100 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN DN

53 DN flange/flange

54 4. Product data sheet The Ballorex Delta DHC DN 100 can be combined with the Ballorex Venturi DN to provide a constant differential pressure in the controlled part of the system as well as to ensure the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 100 DN 125 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN DN

55 DN flange/flange

56 4. Product data sheet The Ballorex Delta DHC DN 125 can be combined with the Ballorex Venturi DN to provide a constant differential pressure in the controlled part of the system as well as to ensure the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 125 DN 150 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN DN

57 DN flange/flange

58 4. Product data sheet The Ballorex Delta DHC DN 150 can be combined with the Ballorex Venturi DN to provide a constant differential pressure in the controlled part of the system as well as to ensure the option of limiting the maximum. See the application examples for further details. Partner valve Flow range Dimension Description DN 150 DN 200 Ballorex Venturi with drain (provided as an accessory) For graphs consult chapter Ballorex Venturi DN DN

59 4.5 Valve setting DN The Ballorex Delta DHC valve is provided with four differential pressure setting ranges. The differential pressure setting is done turning a regulating wheel operated by a setting tool. Differential pressure setting range Factory setting Other settingsfactory setting To provide any other setting on the Ballorex Delta DHC valve, the regulating wheel must be rotated using a setting tool. The rotations of the regulating wheel change the spring compression and thus the force counteracting the force produced by the pressure in the membrane chamber. Each time the regulating wheel is rotated, a new force equilibrium is obtained ensuring the desired differential pressure in the controlled circuit. In order to control the setting, pressure gauges must be installed in the supply and the return lines. The differential pressure can be also checked with the Ballorex Balancing Computer BC2 provided that the medium temperature does not exceed 90 C. The balancing computer must be connected to the measuring point on a partner valve and to a measuring point installed in the pipe inside the controlled loop of the Ballorex Delta DHC valve. The Ballorex Delta DHC is provided with two capillary tubes for installation in the supply or the return line. The valve does not provide the shut-off function. It is therefore recommended to install isolation valves in the system. 59

60 5. Accessoires Accessories Article Dimension Description DN 15UL Ballorex Venturi with Combi Drain Midi DN 15L DN 15S DN 15H DN 20L DN 20S DN 20H DN 25S DN 25H DN 32H DN 40H DN 50H DN 15 Ballorex Vario with Combi Drain Midi DN DN DN DN DN 50 60

61 Accessories Article Dimension Description DN 15 Ballorex Basic with drain DN DN DN DN DN DN 65 DN 80 Ballorex Venturi - When used as a partner valve a Combi Drain Maxi for capillary tube connection is required. The drain is provided as an accessory to DN 100 be ordered separately DN DN DN DN DN R 1/4 connection 3/8 UNF measuring point G 3/4 drain Combi Drain Maxi - drain with measuring point for Ballorex Venturi DN The capillary tube from the Ballorex Delta DHC is connected to the R 1/4 coupling delivered along with the Combi Drain Maxi and installed on the drain R ¼ A coupling installed on the drain of the Ballorex Venturi, the Ballorex Vario or the Ballorex Basic DN to connect the capillary tube with R 1/4 connector from the Ballorex Delta DHC On request 1.0 m, Ø 4 mm Capillary tube with ¼ connector 61