Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Air Oil Water Compact Lightweight Height Weight 4 %Smaller ∗ (4 mm) RoHS Heated water High temperature oil ¡Can be used at 0 m hydraulic head! ¡Min. operating pressure differential: 0 MPa (When the valve opens.) MPa 27%Lighter ∗ (150 g) (VXZ24, C37 (Brass) body) (VXZ23, Resin body) 0.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Air Water Oil Heated water High temperature oil Clearance By providing a buffer and clearance, we reduced the collision sound of the core when ON (when the valve is open). Because of the clearance, when using highly viscous fluids such as oil, the armature does not get stuck and the responsiveness when OFF (when the valve is closed) is improved.
Common Specifications ································································ P. 2 Selection Steps ················································································· P. 3 Specifications Series VXZ Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ····· P. 4, 5 How to Order ············································································· P.
Series VXZ Common Specifications Standard Specifications Valve construction Zero differential pressure type pilot operated 2 port diaphragm type Withstand pressure 2.0 MPa (Resin body type 1.
Series VXZ Specifications Selection Steps Selection Steps Page Symbol Air Page 4 0 Water Page 7 2 Oil Page 10 3 Heated water Page 13 5 High temperature oil Page 16 6 q VXZ2 3 0 A A For Water Select the fluid. Selection item q For Oil Item For Air Step 1 Select the fluid. Step 2 Select “Body material”, “Port size” and “Orifice diameter” from “Flow rate — Pressure” of each fluid. Symbol Body size, Valve 10A, N.C.
Series VXZ For Air ∗ Can be used with low vacuum (up to 133 Pa.abs). Flow-rate Characteristics N.C. Symbol 2 1 When the valve is closed, flow is blocked from port 1 to port 2. However, if the pressure in port 2 is higher than port 1, the valve will not be able to block the fluid and it will flow from port 2 to port 1. Normally Closed (N.C.) Min. operating Max.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Specifications For Air Flow-rate Characteristics For Air N.O. Symbol For Water 2 1 Normally Open (N.O.) Flow-rate characteristics 6.2 ø3/8" 5.3 10 ø12 Aluminium C37 (Brass), Stainless steel Model VXZ2A0 1/4 (8A) 0 15 3/4 (20A) 20 1 (25A) 25 b 0.7 VXZ2B0 VXZ2C0 VXZ2D0 0.6 Cv Note 2) Weight [g] 1.7 0.38 1.2 430 2.0 8.0 3/8 (10A) 1/2 (15A) C [dm3/(s·bar)] Max.
Series VXZ For Air RoHS How to Order (Single Unit) VXZ2 3 0 A A A Fluid 0 Size/Valve type Symbol Body size 3 A 4 B 10A 15A 5 C 20A 6 D 25A N.C. N.C. N.O. N.C. N.O. N.C. N.O. With bracket Orifice diameter No Yes Note) Bracket is standardised with the resin body type. No need to add "XB". Body material Symbol A B C D E F G Port size 10 ∗ The bracket for aluminium, C37 (Brass) and stainless steel body type is shipped together with the product, but not assembled.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Specifications For Water ∗ Can be used with air (Up to 133 Pa.abs for vacuum). Note that the maximum operating pressure differential and flow-rate characteristics should be within the specifications for air. Flow-rate Characteristics For Air N.C. Symbol For Water 2 1 Body Port size Orifice diameter [mmø] material (Nominal diameter) 1/4 (8A) C37 (Brass), Stainless steel Min. operating pressure Max.
Series VXZ For Water Flow-rate Characteristics N.O. Symbol 2 1 When the valve is closed, flow is blocked from port 1 to port 2. However, if the pressure in port 2 is higher than port 1, the valve will not be able to block the fluid and it will flow from port 2 to port 1. Normally Open (N.O.) Body Port size Orifice diameter [mmø] material (Nominal diameter) 1/4 (8A) C37 (Brass), Stainless steel Min. operating pressure Max.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ For Water RoHS Specifications How to Order (Single Unit) VXZ2 3 2 A A A Fluid For Water — XB 6 D N.C. N.O. 25A F G Stainless steel H J Stainless steel K L N.C. N.O.
Series VXZ When the fluid is oil. For Oil The kinematic viscosity must not exceed 50 mm2/s. The special construction of the armature adopted in the built-in full-wave rectifier type gives an improvement in OFF response by providing clearance on the absorbed surface when it is switched ON. ∗ Can be used with air and water. Note that the maximum operating pressure differential and flow-rate characteristics should be within the specifications of the fluid used. Flow-rate Characteristics N.C.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Specifications For Oil Flow-rate Characteristics For Air N.O. Symbol For Water 2 1 Normally Open (N.O.) 1/4 (8A) C37 (Brass), Stainless steel Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics differential Note 1) [MPa] AC DC Av x 10−6 m2 Cv Model 10 VXZ2A3 1/2 (15A) 15 3/4 (20A) 20 VXZ2B3 VXZ2C3 VXZ2D3 3/8 (10A) 0 0.7 0.6 46 1.9 58 2.4 130 5.3 220 9.
Series VXZ For Oil RoHS How to Order (Single Unit) VXZ2 3 3 A A A Common Specifications Seal material Fluid 3 Size/Valve type Symbol Body size 3 A 4 B 15A 5 C 20A 6 D 25A Symbol Body material A B C D N.C. 10A With bracket For Oil — XB N.O. N.C. N.O. N.C. N.O. N.C. N.O.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Specifications For Heated Water ∗ Can be used with air (up to 99°C) and water. Note that the maximum operating pressure differential and flow-rate characteristics should be within the specifications of the fluid used. Flow-rate Characteristics For Air N.C. Symbol For Water 2 1 Body Port size Orifice diameter [mmø] material (Nominal diameter) 1/4 (8A) C37 (Brass), Stainless steel Min. operating pressure Max.
Series VXZ For Heated Water Flow-rate Characteristics N.O. Symbol 2 1 When the valve is closed, flow is blocked from port 1 to port 2. However, if the pressure in port 2 is higher than port 1, the valve will not be able to block the fluid and it will flow from port 2 to port 1. Normally Open (N.O.) Body Orifice diameter Port size [mmø] material (Nominal diameter) 1/4 (8A) C37 (Brass), Stainless steel Min. operating pressure Max.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ For Heated Water VXZ2 3 5 A A A Common Specifications Seal material EPDM Specifications RoHS How to Order (Single Unit) Fluid — XB N.O. N.C. 15A 5 C 20A 6 D 25A N.O. N.C. N.O. N.C. N.O.
Series VXZ When the fluid is oil. For High Temperature Oil The kinematic viscosity must not exceed 50 mm2/s. The special construction of the armature adopted in the built-in full-wave rectifier type gives an improvement in OFF response by providing clearance on the absorbed surface when it is switched ON. ∗ Can be used with air (up to 99°C), water (up to 99°C) and oil.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Specifications For High Temperature Oil Flow-rate Characteristics For Air N.O. Symbol For Water 2 1 Body Port size Orifice diameter [mmø] material (Nominal diameter) 1/4 (8A) C37 (Brass), Stainless steel Min. operating pressure Max.
Series VXZ For High Temperature Oil RoHS How to Order (Single Unit) VXZ2 3 6 A A A Common Specifications Seal material FKM Fluid 6 With bracket For High temperature oil — XB Size/Valve type Symbol Body size 3 A 4 B N.C. 10A N.O. N.C. 15A 5 C 20A 6 D 25A ∗ The bracket is shipped together with the product, but not assembled. Body material/Port size/Orifice diameter Valve type N.O. N.C. N.O. N.C. N.O.
EPDM specification ∗1 Resin body is not available. ∗2 Available for air and water. ∗3 “Other options”, which can be combined, are —, A, B, D, E, Z.
Series VXZ Construction Normally Closed (N.C.) Body material: Aluminium, C37 (Brass), Stainless steel IN q q w w e e r r t t y y u u OUT Component Parts No.
Working Principle Right after energized (Pilot valve open) Energized (Main valve side) When the coil is energized, the armature is attracted causing the pilot orifice to opening. The fluid filling the pressure action chamber flows to the OUT side through the pilot orifice. The pressure in the pressure action chamber decreases by discharging fluid through the pilot orifice.
Series VXZ For Air Dimensions/Body Material: Resin (One-touch Fitting Type) Grommet (with surge voltage suppressor) Grommet ≈300 F Q ≈300 D F D OUT IN B1 2xP Port size DIN terminal X1 U1 X1 U1 2 x ø5.3 Mounting hole 2xP Port size X U B Y W X U B Y W 1.2 B1 E E 1.2 OUT IN R C R C Q 2 x ø5.3 Mounting hole Conduit terminal Cable ø6 to ø12 Q S Q±2 S±2 D F D 32 34 E B Y W Y W X X1 X1 U1 X U 2 x ø5.3 Mounting hole U 2xP Port size 1.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Air Specifications Dimensions/Body Material: Resin (One-touch Fitting Type) ≈280 F D 11 G1/2 Q F D R C Terminal part Faston connector 250 Series 11 For High Temperature Oil 2 x ø5.3 Mounting hole 2 x ø5.3 Mounting hole 9 15 X1 6.5 X U X1 U1 X U For Oil Y W Y W U1 2xP Port size B VXZ2 3 A Model VXZ2 3 A P B B1 C 90 37.5 (96.5) D E F 35 15.
Series VXZ For Air, Water, Oil Dimensions/Body Material: Aluminium, C37 (Brass), Stainless Steel Grommet (with surge voltage suppressor) Grommet ≈300 Q F ≈300 D a F D e Bracket 2xM Depth 5 H R C OUT B1 B1 2xP Port size i B b 2xM Depth 5 H A G B DIN terminal Q Bracket mounting hole dimensions D S G1/2 a1 (VXZ24, 26) Note) a a1 (VXZ23, 25) Note) R C 6.5 31.5 (44) Cable ø6 to ø12 F J 10.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Air Water Oil Specifications Dimensions/Body Material: Aluminium, C37 (Brass), Stainless Steel Conduit Conduit terminal Q±2 D F ≈280 Q F G1/2 D 34 e h J R IN OUT 2xM Depth 5 E OUT H B1 A G 2xP Port size B A G 2xP Port size i For Oil B b H B1 Q 11 D F Terminal part Faston connector 250 Series Bracket mounting hole dimensions a1 (VXZ24, 26) Note) a a1 (VXZ23, 25) Note) 6.5 9 6.
Series VXZ For Heated Water, High Temperature Oil Dimensions/Body Material: C37 (Brass), Stainless Steel Grommet Conduit terminal Q±2 ≈300 Q ≈40 D 34 D 32 (42) F S±2 F a e R C d g R C T h 25 With full-wave rectifier OUT OUT E IN E IN J J f j G1/2 2xM Depth 5 2xP Port size H B1 2xM Depth 5 A G B b A G H B1 B i 2xP Port size DIN terminal Conduit Cable ø6 to ø12 Q Q ≈45 G1/2 D (44) (42) D F 31.
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ Air Water Oil Heated High water temperature oil Replacement Parts ¡DIN Connector Part No. Electrical option Rated voltage Connector part no.
Series VXZ Glossary of Terms Electrical Terminology Pressure Terminology 1. Maximum operating pressure differential The maximum pressure differential (the difference between the inlet and outlet pressure) which is allowed for operation. When the outlet pressure is 0 MPa, this becomes the maximum operating pressure. 2. Minimum operating pressure differential The minimum pressure differential (the difference between the inlet pressure and outlet pressure) required to keep the main valve fully opened. 3.
Series VXZ Solenoid Valve Flow-rate Characteristics (How to indicate flow-rate characteristics) 1. Indication of flow-rate characteristics The flow-rate characteristics in equipment such as a solenoid valve etc. are indicated in their specifications as shown in Table (1).
Series VXZ C : Sonic conductance [dm3/(s·bar)] b : Critical pressure ratio [—] P1 : Upstream pressure [MPa] P2 : Downstream pressure [MPa] t : Temperature [°C] Note) Formula of subsonic flow is the elliptic analogous curve. Flow-rate characteristics are shown in Graph (1) For details, please make use of SMC’s “Energy Saving Program”. Example) Obtain the air flow rate for P1 = 0.4 [MPa], P2 = 0.3 [MPa], t = 20 [°C] when a solenoid valve is performed in C = 2 [dm3/(s·bar)] and b = 0.3.
Solenoid Valve Flow-rate Characteristics Series VXZ 2.
Series VXZ 2.3 Flow coefficient Cv factor The United States Standard ANSI/(NFPA)T3.21.3: 1990: Pneumatic fluid power—Flow rating test procedure and reporting method for fixed orifice components Defines the Cv factor of flow coefficient by the following formula which is based on the test conducted by the test circuit analogous to ISO 6358. Q Cv = ——————————— ·········································································(7) ΔP (P2 + Pa) 114.
Series VXZ Solenoid Valve Flow-rate Characteristics Conversion of flow coefficient: Av = 28 x 10–6 Kv = 24 x 10–6 Cv ···········································································(11) Here, Kv factor 3 3 2 Upstream pressure 2 P1 = 1 MPa P1 = 0.8 MPa 1 0.9 0.8 Example 2 P1 = 0.6 MPa 0.7 0.6 P1 = 0.5 MPa 0.5 0.4 1 0.9 0.8 0.7 0.6 0.5 P1 = 0.4 MPa P1 = 0.3 MPa 0.4 Example 1 0.3 0.3 P1 = 0.2 MPa 0.2 0.2 P1 = 0.1 MPa 0.1 0.001 0.1 0.01 0.002 0.003 0.004 0.02 0.03 0.
Series VXZ Flow-rate Characteristics Note) Use this graph as a guide. In the case of obtaining an accurate flow rate, refer to pages 31 through to 35. For Air How to read the graph Up 1.0 str ea pre ss 0.9 Downstream pressure of valve (P2) [MPa] m (P1 + 1.033) = (1 to 1.89)(P2 + 1.033) ure of va lve 0.8 P1 0.9 1.0 MP a 0.7 0.8 0.6 nic so b Su 0.7 al itic re Cr essu pr 0.6 0.5 The sonic range pressure to generate a flow of 6,000 L/min (ANR) is P1 ≈ 0.
Series VXZ Specific Product Precautions 1 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com Design Warning Selection Warning 1. Cannot be used as an emergency shutoff valve etc.
Series VXZ Specific Product Precautions 2 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com Selection Warning 4. Ambient environment Tap water pressure: The water pressure for tap water is normally 0.4 MPa or less. However, in places like a high-rise building, the pressure may be 1.
Series VXZ Specific Product Precautions 3 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com Piping Mounting Caution Warning 6. Avoid sources of vibration, or adjust the arm from the body to the minimum length so that resonance will not occur. 6.
Series VXZ Specific Product Precautions 4 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com Maintenance Wiring Warning 1. Do not apply AC voltage to Class “H” coil AC type unless it is built in full-wave rectifier, or the coil will be damaged. Caution 1.
Series VXZ Specific Product Precautions 5 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com Electrical Connections Caution 왎 Conduit terminal 왎 Grommet In the case of the conduit terminal, make connections according to the marks shown below.
Series VXZ Specific Product Precautions 6 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com Electrical Circuits Caution [DC circuit] Grommet, DIN terminal, Conduit terminal, Conduit Grommet, Faston terminal Varistor 1 (+, −) 1 (+, −) SOL. 2 (−, +) SOL.
Safety Instructions Caution: These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC)∗1), and other safety regulations. Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
