{"id":4344,"date":"2026-01-19T16:53:09","date_gmt":"2026-01-19T08:53:09","guid":{"rendered":"https:\/\/atfits.com\/?post_type=product&p=4344"},"modified":"2026-01-19T16:53:09","modified_gmt":"2026-01-19T08:53:09","slug":"smc-vhk2a-12f-12f-finger-valve-vhk2a12f12f","status":"publish","type":"product","link":"https:\/\/atfits.com\/es\/producto\/smc-vhk2a-12f-12f-finger-valve-vhk2a12f12f\/","title":{"rendered":"SMC VHK2A-12F-12F Finger Valve VHK2A12F12F"},"content":{"rendered":"

SMC VHK2A-12F-12F Finger Valve (VHK2A12F12F)<\/h1>\n
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1. Product Overview<\/h2>\n
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The SMC VHK2A-12F-12F is a 2-port, 2-position manual finger valve belonging to SMC\u2019s VHK-A series, designed for manual on\/off control of compressed air in industrial pneumatic systems. It features a poppet valve structure with 12mm one-touch fittings on both the supply (P) and actuator (A) ports, making it ideal for quick and easy manual control in applications such as machine tool clamping, fixture positioning, small – bore cylinder actuation, and manual override in automated production lines. With a maximum operating pressure of 1.0 MPa and a proof pressure of 1.5 MPa, this valve offers reliable performance, a small knob operation force, and a clear open\/closed indication via the knob direction, facilitating intuitive on – site operation and maintenance. The compact PBT (Polybutylene Terephthalate) body and lightweight design enable flexible installation in space – constrained areas, and its compatibility with nylon, soft nylon, and polyurethane tubing ensures broad applicability in diverse industrial piping setups. It is also RoHS – compliant, meeting international environmental standards for eco – friendly production facilities.<\/div>\n
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2. Main Functions<\/h2>\n
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Function<\/th>\nDetailed Description<\/th>\n<\/tr>\n<\/thead>\n
Manual On\/Off Air Flow Control<\/td>\nThe 2 – port (P\/A) configuration enables manual switching of compressed air supply to control small – bore cylinders, grippers, and pneumatic accessories, suitable for manual operation stations and emergency stop systems.<\/td>\n<\/tr>\n
Intuitive Open\/Closed Status Indication<\/td>\nThe knob direction clearly shows the valve’s state (counterclockwise rotation for open, clockwise for shut), allowing for quick visual confirmation during operation and maintenance.<\/td>\n<\/tr>\n
Low – Effort Knob Operation<\/td>\nA small operation force of 0.04\u20130.14 N\u00b7m enables easy actuation with one finger, reducing operator fatigue during frequent use.<\/td>\n<\/tr>\n
Secure Handle Retention<\/td>\nThe handle removal prevention function prevents accidental knob disassembly, ensuring operational safety and reliability in industrial environments.<\/td>\n<\/tr>\n
Quick and Tool – Free Tubing Connection<\/td>\n12mm one – touch fittings allow for rapid, tool – free connection and disconnection of nylon, soft nylon, or polyurethane tubing, minimizing installation time and simplifying system modifications.<\/td>\n<\/tr>\n
Residual Pressure Management<\/td>\nWhen shut, the poppet structure effectively blocks air flow and helps manage residual pressure on the actuator side, preventing unexpected movements of pneumatic components.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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3. Technical Features<\/h2>\n
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  1. Poppet Valve Structure<\/strong>: The poppet design minimizes seal defects, ensuring long – term airtightness and reliable performance with a service life of over 5 million cycles.<\/li>\n
  2. Large Effective Cross – Section<\/strong>: An optimized internal flow path provides a large effective cross – sectional area, ensuring sufficient air flow for small to medium – sized pneumatic actuators.<\/li>\n
  3. Compact and Lightweight Design<\/strong>: The PBT body offers high durability and chemical resistance while keeping the valve lightweight, enabling flexible mounting in space – limited areas.<\/li>\n
  4. Broad Pressure Compatibility<\/strong>: With a maximum operating pressure of 1.0 MPa and a proof pressure of 1.5 MPa, it can handle a wide range of industrial pneumatic applications, including low – to – medium pressure systems.<\/li>\n
  5. Wide Temperature Range<\/strong>: The operating temperature range of 0\u201360\u00b0C allows for use in various industrial environments, from cool warehouses to warm production floors.<\/li>\n
  6. RoHS Compliance<\/strong>: It meets international environmental standards and does not contain restricted hazardous substances such as lead and mercury, suitable for eco – friendly production facilities.<\/li>\n
  7. Handle Removal Prevention<\/strong>: The integrated design prevents accidental knob removal, enhancing operational safety and reducing the risk of system downtime due to component loss.<\/li>\n
  8. Corrosion – Resistant Components<\/strong>: High – quality O – rings and seals ensure resistance to industrial contaminants, maintaining reliable performance in harsh working conditions.<\/li>\n<\/ol>\n
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    4. Product Dimensions (Unit: mm)<\/h2>\n
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    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Dimension Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
    Overall Length<\/td>\n62.2<\/td>\n<\/tr>\n
    Overall Width<\/td>\n36<\/td>\n<\/tr>\n
    Overall Height<\/td>\n65.2<\/td>\n<\/tr>\n
    Port Type<\/td>\n12mm One – Touch Fitting (P and A Ports)<\/td>\n<\/tr>\n
    Knob Diameter<\/td>\n39<\/td>\n<\/tr>\n
    Knob Height<\/td>\n26.2<\/td>\n<\/tr>\n
    Body Diameter<\/td>\n32<\/td>\n<\/tr>\n
    Mounting Hole Diameter<\/td>\n3.5<\/td>\n<\/tr>\n
    Mounting Hole Spacing (Center – to – Center)<\/td>\n18.7<\/td>\n<\/tr>\n
    Fitting Insertion Depth<\/td>\n16.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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    5. Weight and Material Specifications<\/h2>\n
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    \n\n\n\n\n\n\n\n\n\n\n\n
    Component<\/th>\nMaterial<\/th>\nWeight (g)<\/th>\n<\/tr>\n<\/thead>\n
    Valve Body<\/td>\nPolybutylene Terephthalate (PBT)<\/td>\n48<\/td>\n<\/tr>\n
    Knob<\/td>\nReinforced PBT<\/td>\n16<\/td>\n<\/tr>\n
    Poppet Valve Core<\/td>\nBrass<\/td>\n12<\/td>\n<\/tr>\n
    Seals & O – Rings<\/td>\nNitrile Rubber (NBR)<\/td>\n5<\/td>\n<\/tr>\n
    One – Touch Fitting Clips<\/td>\nStainless Steel<\/td>\n7<\/td>\n<\/tr>\n
    Mounting Bracket<\/td>\nSteel<\/td>\n10<\/td>\n<\/tr>\n
    Total Weight (Assembly)<\/strong><\/td>\n–<\/td>\n98<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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    6. Key Performance Parameters<\/h2>\n
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    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
    Operating Pressure Range<\/td>\n0.0\u20131.0 MPa<\/td>\n<\/tr>\n
    Proof Pressure<\/td>\n1.5 MPa<\/td>\n<\/tr>\n
    Operating Vacuum Pressure<\/td>\n– 100 kPa<\/td>\n<\/tr>\n
    Ambient and Fluid Temperature Range<\/td>\n0\u00b0C to 60\u00b0C<\/td>\n<\/tr>\n
    Knob Operation Force<\/td>\n0.04\u20130.14 N\u00b7m<\/td>\n<\/tr>\n
    Effective Cross – Sectional Area<\/td>\n17.5 mm\u00b2<\/td>\n<\/tr>\n
    Compatible Tubing Material<\/td>\nNylon, Soft Nylon, Polyurethane<\/td>\n<\/tr>\n
    Service Life<\/td>\n\u22655,000,000 Cycles<\/td>\n<\/tr>\n
    Leakage Rate<\/td>\n\u22640.1 cm\u00b3\/min (at 0.7 MPa)<\/td>\n<\/tr>\n
    Valve Type<\/td>\n2 – Port, 2 – Position Poppet Valve<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n