4 84 Two-port valves (2-ports) VPM43...(2) Three-port valves (3-ports) VMP43... Three-port valves with T bypass (4-ports) VMP43...(4) Two-port and three-port seat valves PN6 VMP43... Two-port valves, type VMP43 (2 ports) Three-port valves, type VMP43 Three-port valves with T bypass, type VMP43 (4 ports) Nominal pressure 6 bar Bronze (Rg5) valve body External thread, G½B and G¾B Nominal stroke 5.5 mm Manual wheel Screwed fittings and flat seal, type ALG available from Landis & Staefa SERTO compression fittings, type SO2 available from suppliers to the trade CanbefittedwithtypeSSB electricactuators Use For use in ventilation and air-conditioning systems for water-side terminal unit control, e.g. induction units, fan-coil units, small reheaters and small re-coolers. Two-pipe systems with one heat exchanger for heating and cooling Four-pipe systems with separate heat exchangers for heating and cooling For zone heating systems, e.g. ndividual storeys in a building Apartments ndividual rooms CMN484E 03.200 Siemens Building Technologies Landis & Staefa ivision
Media Operating pressure Water from 2...0 C Heating water Cooling water Water with additives Water treated with oxygen scavengers Water with glycol, max. 50 % (for frost protection) Max. 600 kpa (6 bar) Type summary Two-port valves (2-ports) Three-port valves (3-ports) Three-port valves with T bypass (4-ports) Thread dimensions Through-port Bypass S v p v00 ) VMP43.09(2) VMP43.09 VMP43.09(4) G½B 0,25 0,2 >50 400 400 VMP43.0(2) VMP43.0 VMP43.0(4) 0,4 0,32 VMP43.(2) VMP43. VMP43.(4) 0,63 0,5 VMP43.2(2) VMP43.2 VMP43.2(4) 0,8 VMP43.3(2) VMP43.3 VMP43.3(4) G¾B,6,2 >00 VMP43.4(2) VMP43.4 VMP43.4(4) 2,5 2 ) [kpa] 00 kpa = bar 0 mws p v00 = Max. admissible pressure differential across the fully open valve p max = Max. admissible pressure differential across the closed valve =Flowrateinm 3 /h of water at 20 C through the valve at nominal stroke (00 %) and at a pressure differential of bar k vr = Minimum flow rate in m 3 /h through the valve at a pressure differential of bar at which the characteristic tolerance can still be maintained = Rangeability (/ k vr) S v p max ) [kpa] Screwed fittings Valve thread For valve type Landis & Staefa Fabrikat: SERTO External thread External pipe diameter 0.25 G½B VMP43.09... ALG3 SO2-2-/2 2 mm 0.4 VMP43.0... SO2-4-/2 4 mm 0.63 VMP43... VMP43.2... SO2-5-/2 5 mm.6 G¾B VMP43.3... ALG4 SO2-7-3/4 7 mm 2.5 VMP43.4... SO2-8-3/4 8 mm Other L&S valves Other PN6 valves with a stroke of 5.5 mm and screwed fittings, but with higher rates and pressure differentials: Valve escription ata sheet VVG44... Two-port valves PN6 N4364 VV52.5 Two-port valves PN6/25 N4377 VXG44... Three-port valves PN6 N4464 VMP45 Two-port valves PN6 Three-port valves PN6 Three-port valves with T bypass PN6 N4845 2/8
Ordering When ordering, please specify the quantity, product name and type code, plus the quantity of ALG screwed fittings required, if any. The ALG screwed fittings (Landis & Staefa) and the SSB actuators must be ordered as separate items. Example: 2 three-port valve with T bypass, type VMP43.0(4) and 8 sets screwed fittings, type ALG3 elivery The valves, actuators and screwed fittings are delivered in separate packaging. Equipment combinations ThetypeVMP43 valves can be operated with SSB electric actuators with a 5.5 mm nominal stroke and screwed fittings. See data sheet N489. Actuator Operating voltage Control Run-time SSB3... AC 230 V 3-Punkt 50 s SSB6... AC 24 V C 0...0 V 75 s SSB8... AC 24 V 3-Punkt 50 s Mechanical design Bronze (Rg5) valve body; stainless-steel stem and plug Stainless-steel through-port seat Valve with threaded neck for mounting actuator (with threaded coupling) All valves in series have a manual override The three-port valve with T bypass, type VMP43 (4), comes with the T-piece pre-mounted Function The valve (through-port) is opened electrically by the actuator. The valve (through-port) is closed by the force of the built-in return spring. Two-port valve VMP43...(2) 484Z0 Three-port valve VMP43... 484Z02 Three-port valve with T bypass VMP43...(4) 484Z03 3/8
Sizing p v00 [bar] p v 00040 V 00 [m³/h] 6 5 4 3 2 0.8 0.6 0.5 0.4 0.3 0.2 0.0 0.02 0.03 0.04 0.05 0.06 0.08 0. 2.5.6 0.2 0.63 0.3 0.4 0.25 0.4 0.5 0.6 0.8 2 3 2 3 4 5 6 8.7.4. 0.85 0.6 0.3 0.22 0.7 0.4 0. 0.085 0.06 V 00 [l/s] 0. 0.08 0.06 0.05 0.04 0.03 0.025 2 3 4 5 6 8 0 20 30 40 50 60 p v00 [kpa] 80 00 200 300 400 500 600 800 0.03 0.02 0.08 0.05 0.0 0.008 0.006 p max. p v00 pmax. value in through-port value in bypass = Max. admissible pressure differential across the closed valve = Pressure differential across the fully opened valve in the system at full load p v = Additional pressure differential in the bypass (to the through-port) V 00 = Max. volumetric flow rate m 3 /h = 0.278 kg/s Water at 20 C Example () = in through-port : value = 2.5 (2) = in bypass : value = 2 (3) = in bypass : p v00 -Wert = 70 The value in the bypass is only 80 % of the value in the through-port. This compensates for the flow resistance of the heat exchanger or radiator, so keeping the overall flow rate as constant as possible. Control characteristics Type VMP43... and VMP43...(4) valves may be used only in mixing applications. urchfluss k v / 0,8 0,6 0,4 0,2 0 0 0,2 0,4 0,6 0,8 Hub H / H 00 00055de The VMP43... control valves have a basic equalpercentage characteristic in the straight-through path (A AB) : n gl = 2.2 in accordance with V/ VE273 (optimised for a large controllable range). n bypass (B), the basic characteristic is linear. Mixing applications in VMP43 three-port valves, or VMP43... three-port valves with T bypass (4 ports): Port (AB) = Constant total flow from and (AandB AB) Port (A) = Variable flow through straight-through path from (A AB) Port (B) = Variable flow through bypass path from (B AB) H 0 = Valve stroke 0 % = path (A AB) closed, and bypass (B) open = Valve stroke 00 % = path (A AB) open, and bypass (B) closed H 00 4/8
Engineering notes The valves should preferably be installed in the return, where the seals are exposed to lower temperatures. See also «Mounting» and «Commissioning». Recommendation: A strainer should be fitted upstream of the valve, at the inlet. Two-port valves VMP43...(2) irection of flow only from (A) to (AB). 00056 (AB) (A) irection of flow through two-port valve Three-port valves VMP43... and Three-port valves with T bypass VMP43...(4) These valves may be used only in mixing applications. irection of flow only from (A) and (B) to (AB), i.e. (AB) =Outletfortotalflow (A) = Controlled flow inlet (B) = Bypass flow inlet 00057 (AB) (A) irection of flow in three-port valve (B) 00058 (AB) (A) irection of flow in three-port valve with T bypass 5/8
Mounting and installation notes Mounting instructions are enclosed with the valve. Note the direction of flow as indicated above under "Engineering". The valve and actuator can be assembled without special tools or calibration. o not remove the manual override from the valve until ready to mount the actuator. Orientation 484Z07 Permissible Not permissible Commissioning notes The valves are automatically closed by a return spring. The straight-through path from (A AB) can be opened manually, or electrically via the actuator. n the case of three-port valves, this throttles or closes bypass (B). Stem retracted: Through-port opens, and bypass closes * Stem extended: Through-port closes, and bypass opens * * Only three-port valves have a bypass Technical ata Operating data Characteristics Two-port valve Three-port valve Leakage Path (A AB) Bypass (B) Threaded connections On valve n coupling Nominal stroke Equal-percentage to V/ VE273 * n gl = 2.2 = 2.2 for control path, linear for bypass n gl 0... 0.02 % of value 0... 0.02 % of value G...B to SO228/ R... to SO7/ 5.5 mm imensions / Weights imensions See table under "imensions" Weights See table under "imensions" Accessories Type ALG screwed fittings comprising Type SO2 fitting comprising Supplier: Landis & Staefa Nut, nipple and flat seal for steel pipes with gas-pipe threads Supplier: SERTO Nut and compression fitting for seamless copper and mild-steel piping * Corrected in low opening range for high rangeability 6/8
imensions All dimensions in mm Two-port valve VMP43... (2) 00037 L4 H H3 Hmin H L2 L B Three-port valve VMP43... 00038 L3 H H3 Hmin H L2 L B Three-port valve with T bypass VMP43...(4) 00039 Z K H H3 Hmin H L2 L B = Flow coefficient in m 3 /h * = imensions for actuator connection G = Valve weight in kg Valve type B H Hmin H * H3 K L L2 L3 L4 Z G [kg] 2-ports 3-ports 4-ports 0.25 G½B VMP43.09... 25 205 30 46 56 50 68 34 28 35 65 0.35 0.33 0.45 0.4 VMP43.0... 0.63 VMP43... VMP43.2....6 G¾B VMP43.3... 30 20 35 50 60 60 85 42.5 33 40 75 0.52 0.47 0.70 2.5 VMP43.4... 7/8
Screwed fittings ALG screwed fittings with external thread and flat seal, available from Landis & Staefa. with male threads ALG3 and 4 00 Type code (Valve) L [mm] T [mm] ALG3 0.25 bis.0 G½B R 3 /8 24 9 T L ALG4.6 bis 2.5 G¾B R½ 29.5 2 SERTO compression fittings are not available from Landis & Staefa and must be ordered from your specialist dealer. Type code (Valve) 3 External diameter SO 2-2-/2 SO 2-4-/2 SO 2-5-/2 0.25 bis.0 G½ 2 mm 4 mm 5 mm SO 2-7-3/4 SO 2-8-3/4.6 bis 2.5 G¾ 7 mm 8 mm = Valve thread G...B (internal cylindrical) 3 = External diameter for seamless copper and mild-steel piping 8/8 200 Siemens Building Technologies Ltd. Subject to changes