ACVATIX™ On/Off PICV, PN 25 VQP46.., VQP46..Q, VQI46.., VQI46..Q VQP46.. VQP46..Q with pressure test points P/T VQI46.. VQI46..Q with pressure test points P/T For rooms, zones, ventilation and air-conditioning systems ● ● ● ● ● ● ● ● A6V11877580_en--_c 2020-10-08 Integrated differential pressure controller Valve body made of dezincification resistant hot-pressed brass (DZR) Volumetric flow 30...1800 l/h Differential pressure range 17...
Use ● ● ● In ventilation and air conditioning plants for control on the water side and automatic hydraulic balancing of terminal units, such as fan coils, induction units, and in heat exchangers for heating and cooling, with 2-point control In heating zones, such as self-contained heating systems, apartments, individual rooms, etc.
P1 Pressure at inlet of PICV P2 Pressure at outlet of presetting P3 Pressure at outlet of PICV P+ P/T port, pressure test point with red ribbon [7] P- P/T port, pressure test point with blue ribbon [6] A Inlet medium (inlet port) B Outlet medium (outlet port) 2 Ring with dial for presetting 4 Differential pressure controller maintains the pressure P1 – P2 constant across the presetting [5] 6 On/Off control valve with mounted actuator Manual control The manual control knob can be fitted t
. The valve shall have connections with external threads to ISO 228-1 and size DN 15. – PICV selection: VQP46.15L0.5 (externally threaded connections, no pressure test points P/T, nominal volumetric flow 520 l/h) 5. Volumetric flow: 270 l/h Dial setting: 2.6 Volumetric flow/dial presetting Tables to determine the dial setting for a desired volumetric flow. Δpmin [kPa] based on volumetric flow; interpolate missing values.
Valve characteristic Since the VQP/VQI is an On/Off PICV, the valve characteristic is not based on a modulating function. The valve characteristic is made up of two operating points: ● The PICV is closed at stroke H/H100 = 0 and volumetric flow V/V 100 = 0 ● The PICV is open at stroke H/H100 = 1 and volumetric flow V/V100 = 1 Type summary Type Stock no. DN H100 [mm] VQP46.10L0.5 S55264-V134 VQP46.10L0.5Q S55264-V133 VQP46.15L0.5 S55264-V138 VQP46.15L0.5Q S55264-V137 VQP46.15F1.
Accessories Type ALE10 ALE11 Stock no. ALE10 ALE11 Description Electronic manometer excluding measuring lines and measuring tips. Measuring range 0...700 kPa. A differential pressure of more than 1000 kPa will destroy the pressure sensor. For measuring the differential pressure between P+ and P- of the PICVs (refer to drawing under Functional principle [➙ 2]).
Fittings Type Stock no. Description ALG132 ALG132 ALG142 ALG142 Set of 2 fittings with threaded connections for 2-port valves, consisting of 2 union nuts, 2 discs and 2 flat seals. Ordering (example) Type Stock no. Description VQP46.15L0.5 S55264-V138 On/Off PICV, PN 25, externally threaded STA23 S55174-A101 Actuator Equipment combinations Actuators Type SUE21P STA23.. STA73..
Product documentation Title Content Document ID: Mounting instructions VQP46.., VQP46..Q, VQI46.., VQI46..Q Mounting instructions A6V11878322 Electrothermal actuators STA..3.., STP..3.. Data sheet: product description CE1N4884en Mounting instructions Actuators STA..3.., STP..3..
Symbols Symbol used in catalogs and application descriptions Symbol used in diagrams There are no standard symbols for PICVs in diagrams. Recommendation A strainer or dirt trap should be fitted upstream of the valve to enhance reliability. Remove dirt welding beads, etc. from valves and pipes. Do not insulate the actuator bracket, as air circulation must be ensured! Installation Presetting Presetting can be done with or without the actuator mounted. 1. Loosen knurled nut. 2.
Commissioning CAUTION Strong pressure impacts can damage closed PICVs. ● The PICVs must be commissioned with the manual control knob or actuator correctly fitted. ● The PICVs must be open when flushing or pressure testing the system. Flush only on correct flow direction. ● Differential pressure Δpmax across the valves’s control path is not allowed to exceed 600 kPa Manual control When turning the manual control knob in counterclockwise direction or manually operating the actuator, the valve opens.
Disassemble Siemens Smart Infrastructure 1. Loosen the knurled nut 2. Place the special tool on the On/Off bonnet 4. Remove the On/Off bonnet from 5. Place the 19 mm top on the differential pressure regulator the valve housing 7. Remove the differential pressure regulator from the valve housing 3. Loosen the On/Off bonnet 6.
Assemble 1. Insert the differential pressure regulator and tighten the regulator to stop 4. Insert the On/Off bonnet and tighten with 20 Nm 2. Loosen the differential pressure 3. regulator until the marking on the regulator is aligned against the flow direction Orient the indicator in fully open position to presetting Re-adjust Step 2 if necessary Sealing gland The stem sealing gland cannot be exchanged. Should leakage occur, the whole valve must be replaced.
Technical data Functional data PN class PN 25 as per EN 1333 Permissible operating pressure 2500 kPa (25 bar) as per ISO 7628 / EN 1333 Differential pressure Max. Min. Valve characteristic 600 kPa See tables in Volumetric flow/dial presetting [➙ 4] On/Off Operating direction Normally open (push to close) Leakage rate in general Class IV (0...0.01 % of volumetric flow V100 ) to EN 1349 Average flow accuracy ± 5 % up to ± 10 % from Δpmin...
Dimensions / weight Dimensions Threaded connections Actuator connection Cf. Dimensions [➙ 16] VQP46.. G to ISO 228-1 (externally threaded) VQI46.. Rp to ISO 7-1 (internally threaded) DN 10...25 M30 x 1.5 mm Pressure test points (P/T-ports) Connection valve body G ¼ " Needles Weight 2 mm x 40 mm Cf.
Application examples PICVs in HVAC systems combined with variable speed pumps provide even higher energy efficiency. When sizing the pump, it must be made certain that the most critical branch or consumer in the system – usually the most remote from the pump – receives enough pressure (pump head). Thus, it is recommended to use a variable speed pump in constantpressure mode with end-point feedback, to maintain a minimum differential pressure across the critical valve.
Dimensions VQP46.. VQP46..Q Type VQP46.10L0.5 VQP46.10L0.5Q DN 10 G L1 L2 H1 H2 H3 [inch] [mm] [mm] [mm] [mm] [mm] [kg] 70 - 0.339 79 69 0.442 75 - 0.362 84 69 0.465 ½ VQP46.15L0.5 VQP46.15L0.5Q VQP46.15F1.3 15 ¾ VQP46.15F1.3Q VQP46.20F1.5 VQP46.20F1.5Q VQP46.25F1.8 VQP46.25F1.8Q 16 Siemens Smart Infrastructure 75 84 20 1 25 1¼ 37 42 59 - 0.362 69 0.465 80 - 0.396 90 69 0.518 87 - 0.478 98 69 0.
VQI46.. VQI46..Q Type DN G L1 L2 H1 H2 H3 [inch] [mm] [mm] [mm] [mm] [mm] [kg] - 0.360 69 0.458 - 0.360 VQI46.15L0.5 VQI46.15L0.5Q VQI46.15F1.3 15 ½ 72 VQI46.15F1.3Q VQI46.20F1.5 VQI46.20F1.5Q VQI46.25F1.8 VQI46.25F1.8Q 37 20 ¾ 78 25 1 86 42 59 69 0.458 - 0.387 69 0.488 - 0.465 69 0.566 Sets of threaded fittings with flat seal ALG..2..
Revision numbers Type Valid from rev. no. Type Valid from rev. no. VQP46.10L0.5 ..A VQI46.15L0.5 ..A VQP46.10L0.5Q ..A VQI46.15L0.5Q ..A VQP46.15L0.5 ..A VQI46.15F1.3 ..A VQP46.15L0.5Q ..A VQI46.15F1.3Q ..A VQP46.15F1.3 ..A VQI46.20F1.5 ..A VQP46.15F1.3Q ..A VQI46.20F1.5Q ..A VQP46.20F1.5 ..A VQI46.25F1.8 ..A VQP46.20F1.5Q ..A VQI46.25F1.8Q ..A VQP46.25F1.8 ..A VQP46.25F1.8Q ..
