Two-port and three-port small valves PN16, ANSI Class 250

Transcription

1 4 845 Two-port valves (2-ports) VVP to VVP VVK45... Three-port valves (3-ports) VXP to VXP VXK45... Three-port valves with T bypass (4-ports) VMP to VMP VMK45... Two-port valves (2-ports) VVP to VVP Three-port valves (3-ports) VXP to VXP Two-port and three-port small valves PN16, NSI Class 250 V...P45... V...K45... Two-port valves, types VVP45 and VVK Three-port valves, types VXP45 and VXK Three-port valves with T bypass, types VMP45 and VMK Nominal pressure 16 bar, NSI Class 250 ronze (Rg5) valve body N10, N15, N20, N25, N32 and N40 N10 valves available with thread for compression fitting (V K ) Male threaded connections G... Nominal stroke 5.5 mm Manual adjuster Screwed fittings LG... with flat seal, available from Landis & Staefa SERTO compression fittings, type SO21 available from suppliers to the trade Can be fitted with type SS or SSC... electric actuators CM1N4845E Siemens uilding Technologies HVC Products

2 Use In ventilation and air-conditioning systems for water-side terminal unit control in closed circuits, e.g. induction units, fan coil units, small reheaters and small re-coolers, for use in: Two-pipe systems with one heat exchanger for heating and cooling Four-pipe systems with two separate heat exchangers for heating and cooling In closed-circuit zone heating systems, e.g. Individual storeys in a building partments Individual rooms Media Recommendation: Operating pressure Hot water: Max. 110 C, short-term max. 120 C Chilled water: bove 2 C Water containing anti-freeze agent Water should be treated as specified in VI 2035 Max kpa (16 bar) in accordance with ISO 7268 (IN 2401) and NSI Class 250 as per SME Type summary Valve types VVP45... Valve types V K with threaded connections G for compression fittings only N Connection k vs VV (2-ports) VX (3-ports) VM (4-ports) k vs ypass S v p s 1) p max ctuator Positioning force [m 3 /h] [m 3 /h] [kpa] [kpa] 1) 200N 300N 10 G½ 0.25 VVP VXP VMP > SS SSC 0.4 VVP VXP VMP VVP VXP VMP VVP VXP VMP VVP VXP VMP For 0.25 VVK VXK VMK compression 0.4 VVK VXK VMK fittings 0.63 VVK VXK VMK G½ 1.0 VVK VXK VMK VVK VXK VMK G¾ 2.5 VVP VXP VMP G1 4.0 VVP VXP VMP G1¼ 6.3 VVP VXP G1½ 10 VVP VXP > SSC 32 G2 16 VVP VXP G2¼ 25 VVP VXP ) p s For p max = Where p max is above 100 kpa, there is an increased risk of noise and erosion on the seat and plug. p max k vs k vr S v = Max. admissible pressure differential in kpa at which the valve is still capable of closing against the pressure. = Max. admissible pressure differential across the closed valve/actuator assembly. = Flow rate in m 3 /h of water at 20 C through the valve at nominal stroke (100 %) and at a pressure differential of 1 bar. = Minimum flow rate through the valve in m 3 /h at a pressure differential of 1 bar, at which the flow-characteristic tolerances can still be maintained. = Rangeability (k vs / k vr) 2/10

3 Threaded fittings for V...P45... N Valve threads For valve type 10 G½ V P to V...P Landis & Staefa Male thread Female thread LG13 SO /2 SO /2 SO /2 15 G¾ V P LG14 SO /4 SO /4 20 G1 V P LG15 25 G1¼ VVP VXP G1½ VVP VXP G2 VVP VXP G2¼ VVP VXP LG20 LG25 LG32 LG40 Supplier: SERTO Exernal pipe diameter 12 mm 14 mm 15 mm 17 mm 18 mm Compression fittings for V...K N Valve threads For valve type 10 G½ V...K bis V...K Supplier: CONEX Standard Compression Fittings (Type ) Compression fitting 65/15 Union nut 63/15 External pipe diameter 15 mm Supplier: KUTERLITE Standard Compression Fittings Compression fitting 978 Union nut 978 External pipe diameter 15 mm Other L&S valves Other PN16 valves with a stroke of 5.5 mm and screwed fittings, but with higher pressure differentials: Type Valve description ata sheet VVG44... Two-port valves PN16 N4364 VVI52.15 Two-port valves PN16/25 N4377 VVG55... Two-port valves PN25 N4379 VXG44... Three-port valves PN16 N4464 VMP43 Two-port valves PN16 Three-port valves PN16 Three-port valves with T bypass PN16 N4841 Ordering Example When ordering, please specify the quantity, product name and type code, plus the quantity of LG screwed fittings required, if any. The LG screwed fittings (Landis & Staefa) and the SS actuators must be ordered as separate items. 1 three-port valve with T bypass, type VMP , and 4 sets fittings, type LG13 elivery The valves, actuators and screwed fittings are packed separately. 3/10

4 Equipment combinations Valve types V ,25 to V ,3 are operated with type SS... actuators (see data sheet N4891) or type SSC... actuators (see data sheet N4895) whereas valve types V...P , V and V...P are only operated with type SSC... actuators. ctuator Operating voltage Control Run-time Positioning To k vs force SS31... C 230 V 3-position 150 s 200 N 6.3 m 3 /h SS61... C 24 V C V 75 s SS81... C 24 V 3-position 150 s SSC31... C 230 V 3-position 150 s 300 N 25 m 3 /h SSC61... C 24 V C V 30 s SSC81... C 24 V 3-position 150 s Sizing p v100 [bar] Key: p vmax (Where p vmax is above 100 kpa, there is an increased risk of noise and erosion on the seat and plug.) k vs [m³/h] k vs -value in straight-through control path kpa 1 bar 10 mws 1 m 3 /h l/s water at 20 C p max p vmax p v100 V 100 Maximum admissible pressure differential across the closed valve/actuator assembly. Maximum admissible differential pressure across the valve under all operating conditions dmissible differential pressure with fully open valve and nominal stroke Maximum flow rate in l/s The k vs-values in bypass for valve types V to V represent only 70 % of the k vs value in the straight-through control path (for other types 100 %). This compensates for the flow resistance of the heat exchanger or radiator, so keeping the overall flow rate, V 100 as constant as possible. V 100 [m 3 /h] p v max V 100 [l/s] Example: = Example (1) V 100 = l/s (2) p v100 = 9 kpa (3) Required k vs value = 1.0 m 3 /h p v100 [kpa] /10

5 Control characteristics V to V V...P to V...P V , V , ,6 0,4 0,2 0,6 0,4 0, ,2 0,4 0,6 0, ,2 0,4 0,6 0,8 1 H 0 H 100 H 0 H 100 Caution! Type VX and VM valves may be used only in mixing applications. V 100 = Volumetric flow rate H 0 = Valve stroke 0 % = path closed, and bypass open H 100 = Valve stroke 100 % = open, and bypass closed Port = Constant total flow from and Port = Variable flow in the straight-through path from Port = Variable flow in the bypass control path from 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: strainer should be fitted upstream of the valve. Two-port valves (2-ports) VVP45 / VVK Flow only permissible in direction of arrow from (marked on valve body) Port = Variable flow through straight-through port (outlet) Port = Variable flow through straight-through port (inlet) Stem retracted: Path open Stem extended: Path closing Three-port valves (3-ports) VXP45 / VXK Type VXP45... and VXK45... valves may be used only in mixing applications. Mixing: Flow from and Port = Constant total flow (outlet) Port = Variable flow (inlet ) Port = Variable flow through bypass (inlet ) Stem retracted: Path open, bypass closed Stem extended: Path closed, bypass open 5/10

6 Three-port valves with T bypass (4 ports) VMP45 / VMK Type VMP45... and VMK45... valves may be used only in mixing applications. C Mixing: Flow from and Port = Constant total flow (outlet) Port = Variable flow (inlet ) Port = Variable flow through bypass (inlet ) Stem retracted: Path open, bypass closed Stem extended: Path closed, bypass open Mounting notes Orientation Permissible Not permissible In addition, the direction of flow as described under «Engineering» must be observed. The valves are delivered in multipacks; mounting instructions are enclosed with the packaging. Commissioning notes Manual adjustment Warning! The straight-through path can be opened electrically via the actuator, or manually. With three-port valves, this throttles or closes bypass. Manually, path can only be opened to 70 % (bypass closes to 30 %). The valves with k vs values 10, 16 and 25 can be fully opened whereas the bypass can be fully closed The valves are automatically closed by a return spring. efore performing any service work on the valve and/or actuator: switch OFF the pump and power supply, close the main shut-off valve in the pipework, release pressure in the pipes and allow them to cool down completely. If necessary, disconnect electrical connections from terminals. The valve may be commissioned only with the manual wheel pre-set or with a correctly mounted actuator. 6/10

7 Technical data Operating data Characteristics Path ypass Leakage Path ypass Rangeability Pressure class PN16 NSI Class 250 Nominal stroke Valve materials Valve body Stem Plug, seat, gland O-rings For valve types with k vs 0.25 to 6.3: n gl = 2.2 in accordance with VI/VE 2173 (optimised for a wide controllable range). For valve types with k vs 10 to 25: Linear Linear % of k vs % of k vs see «Type summary» cc. to ISO 7268 (IN 2401) SME mm Materials ronze (Rg5) Stainless steel rass Special EPM rubber imensions / Weights imensions see «imensions» (table) Threaded connections ccessories Valve Screwed fittings Weights LG screwed fittings (supplier: Landis & Staefa) SO 21 screwed fittings (supplier: SERTO) Compression fittings (for valves V...K bis V...K ) G... to ISO 228/1 R/Rp... to ISO 7/1 see «imensions» (table) Nut, nipple and flat seal for steel pipes with gas-pipe threads Nut and compression fitting for seamless copper and mild-steel piping Nut and compression fitting for seamless copper and mild-steel piping 7/10

8 imensions ll imensions in mm Two-port valves (2-ports) VVP45... / VVK45... H1 H L4 L2 L1 N Valve type H1 H2 L1 L2 L4 G [kg] 10 G½ VVP VVK G¾ VVP G1 VVP G1¼ VVP G1½ VVP G2 VVP G2¼ VVP Three-port valves (3-ports) VXP45... / VXK45... H1 H L3 L2 L1 N Valve type H1 H2 L1 L2 L3 G [kg] 10 G½ VXP VXK G¾ VXP G1 VXP G1¼ VXP G1½ VXP G2 VXP G2¼ VXP /10

9 Three-port valve with T bypass (4-ports) VMP45... und VMK45... H1 H L2 L1 N Valve type H1 H2 K L1 L2 G [kg] 10 G½ VMP VMK G¾ VMP G1 VMP Screwed fittings LG screwed fittings with flat seal, available from Landis & Staefa with male threads LG13 and 14 with female threads LG15 to T L T L Type code N (Valve) For valve type 1 2 L T LG13 10 V P bis V P G½ R 3 / LG14 15 V P G¾ R½ LG15 20 V P G1 Rp½ LG20 25 V...P G1¼ Rp¾ LG25 25 V...P G1½ Rp LG32 32 V...P G2 Rp1¼ LG40 40 V...P G2¼ Rp1½ SERTO compression fittings are not supplied by Landis & Staefa and must be ordered from your trade supplier. Type code SO /2 SO /2 SO /2 SO /4 SO /4 N (Valve) For valve type 3 External diameter 10 V P bis V P G½ 12 mm 14 mm 15 mm 15 V P G¾ 17 mm 18 mm N 3 = Nominal width of valve = Valve thread (internal cylindrical) = External diameter for seamless copper and mild-steel piping 9/10

10 10/ Siemens uilding Technologies Ltd. Subject to changes