SMC VCZW31-5G-15-04-J-X21 Circulating Fluid Valve – VCZ Series
Imagine a high-purity chemical delivery line in a semiconductor fab suddenly losing precise flow control — process chemistry goes off-spec, wafers are scrapped, and the entire production cell halts. Or picture a critical cooling loop in a laser cutting system running without a reliable recirculation valve: thermal runaway, optics damage, unplanned downtime measured in days. These are not hypothetical scenarios. They are the exact failure modes that the SMC VCZW31-5G-15-04-J-X21 Circulating Fluid Valve is engineered to prevent. When fluid integrity and repeatable flow control are non-negotiable, this valve is the component that keeps the process running.
Within SMC’s VCZ Series — a product line purpose-built for high-purity and chemically aggressive fluid circuits — the VCZW31-5G-15-04-J-X21 occupies a precision-critical tier. Its 15 mm port size, G1/4 connections, and J-spec seal configuration make it a preferred selection for OEM integrators and process engineers who require consistent actuation performance across thousands of duty cycles. SMC, as the world’s largest pneumatics and fluid control manufacturer with operations in over 80 countries, has positioned the VCZ Series as the global benchmark for circulating fluid valve reliability in semiconductor, flat panel display, and advanced manufacturing environments.
Technical Specifications
- Manufacturer: SMC Corporation
- Part Number / SKU: VCZW31-5G-15-04-J-X21 (Ref: 0190-11558)
- Series: VCZ — High-Purity Circulating Fluid Valve
- Valve Type: Circulating fluid valve (recirculation / bypass configuration)
- Port Size: 15 mm
- Port Connection: G1/4 (04 designation)
- Seal Specification: J-spec (chemically compatible elastomer)
- Special Specification: X21 (OEM / application-specific build)
- Body Configuration: W31 — 3-port circulating body
- Actuation: Pneumatic (5G pilot configuration)
- Weight: 1,150 g
- Fluid Compatibility: High-purity liquids, DI water, mild chemical solutions (refer to SMC chemical resistance data for specific media)
- Compliance: Manufactured to SMC global quality standards; CE-compatible design
Note: All specifications are sourced from SMC official product documentation. Konmask.com does not modify or fabricate technical parameters.
Key Features & Benefits
- High-Purity Fluid Path: Internal wetted surfaces engineered to minimize particle generation and contamination — critical for semiconductor and cleanroom applications.
- 3-Port Recirculation Design: Enables continuous fluid circulation with controlled bypass, eliminating dead-leg zones that cause chemical degradation or thermal stratification.
- Chemically Resistant J-Spec Seals: Seal material selected for compatibility with aggressive process chemistries, extending service life and reducing unplanned maintenance intervals.
- X21 OEM Specification: Application-optimized build variant, ensuring dimensional and performance consistency for system integrators requiring repeatable drop-in replacement.
- Pneumatic Actuation (5G): Fast, reliable switching response with low power consumption — integrates directly with standard SMC solenoid valve manifolds and PLC-controlled pneumatic circuits.
- Compact G1/4 Port Footprint: Facilitates installation in space-constrained fluid panels and tool enclosures without compromising flow capacity.
- Global SMC Supply Chain: Backed by SMC’s worldwide manufacturing and distribution network, ensuring part availability and long-term product support.
Industry & Equipment Applications
- Semiconductor Manufacturing: Chemical mechanical planarization (CMP) slurry recirculation, photoresist delivery systems, wet bench chemical loops.
- Flat Panel Display (FPD) Production: Etchant and developer fluid circuits requiring precise recirculation control.
- Laser & Optical Equipment: Chiller and cooling fluid recirculation loops for laser sources, optics, and power electronics.
- Pharmaceutical & Biotech: High-purity water (WFI/PW) distribution loops and buffer recirculation systems.
- Industrial Cooling Systems: Closed-loop coolant circuits in CNC machining centers, EDM machines, and power conversion equipment.
- Chemical Processing: Controlled recirculation of process fluids in batch reactors and inline blending systems.
System Integration & Compatible Parts
The VCZW31-5G-15-04-J-X21 is designed for seamless integration within SMC fluid control architectures. Typical compatible system components include:
- Solenoid Valves: SMC SY / SV / VQ series (5-port, 24 VDC) for pneumatic pilot actuation
- Tubing & Fittings: SMC KQ2 / KQG series push-in fittings, G1/4 threaded connections
- Pressure Regulators: SMC AR / AW series for pilot air supply conditioning
- Flow Controllers: SMC AS series speed controllers for actuation tuning
- Manifold Bases: SMC VCZ series manifold blocks for multi-valve panel integration
- Sensors: SMC D-series reed/solid-state position sensors for valve open/close feedback
If you require assistance confirming system compatibility or identifying complementary components, contact our technical team at support@konmask.com.
Our Quality Assurance Process
At Konmask.com, every SMC component we supply passes through a structured 4-step verification process before shipment:
- Step 1 — Source Verification: We procure exclusively from authorized SMC distributors and verified OEM surplus channels. No grey-market or counterfeit sources.
- Step 2 — Physical Inspection: Each unit is inspected for label integrity, part number accuracy, date code consistency, and packaging condition upon receipt.
- Step 3 — Functional Check: Where applicable, pneumatic actuation and seal integrity are verified prior to dispatch.
- Step 4 — Documentation Package: Shipment includes part number confirmation, packing list, and available traceability documentation upon request.
How to Order
- Submit an Inquiry: Use the contact form or email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quote: Our team responds within 1 business day with pricing, lead time, and shipping options.
- Confirm & Pay: We accept T/T bank transfer, PayPal, and other agreed payment terms for B2B orders.
- Ship & Track: Orders are dispatched via DHL, FedEx, or UPS Express with full tracking. Consolidated shipping available for multi-line orders.
Phone / WhatsApp: +0086 19859288691 | Email: support@konmask.com
Why Choose Konmask.com?
- ✔ Specialized in industrial automation components — SMC, Siemens, Omron, Keyence, and more
- ✔ Global shipping to 50+ countries with express and economy freight options
- ✔ B2B-focused: MOQ flexibility, consolidated orders, and volume pricing available
- ✔ Technical support from engineers with hands-on automation experience
- ✔ Transparent sourcing — we tell you where your parts come from
- ✔ Fast response: inquiries answered within 1 business day
Frequently Asked Questions
Q: Is the VCZW31-5G-15-04-J-X21 a genuine SMC product?
A: Yes. Konmask.com sources SMC components from authorized distributors and verified supply channels. We do not sell counterfeit or rebranded parts.
Q: What does the X21 suffix mean on this valve?
A: The X21 designation indicates a special OEM specification variant. This typically involves dimensional, material, or performance modifications made for a specific OEM customer or application. If you need to confirm compatibility with your existing system, please contact us with your application details.
Q: What is the difference between the VCZW31 and standard VCZ series valves?
A: The W31 body configuration denotes a 3-port circulating valve design, optimized for recirculation and bypass applications. Standard VCZ 2-port valves are used for simple on/off flow control. The W31 is selected when continuous fluid movement is required to prevent settling, thermal gradients, or chemical degradation in the loop.
Q: Can this valve handle aggressive chemicals?
A: The J-spec seal configuration is selected for chemical resistance. However, compatibility depends on the specific process fluid, concentration, temperature, and pressure. We recommend consulting SMC’s official chemical resistance guide or contacting our technical team before deployment in aggressive chemical environments.
Q: What is the lead time for this part?
A: Lead time varies by stock availability. Submit an inquiry and we will confirm availability and estimated delivery within 1 business day.
Q: Do you offer warranty or return policy?
A: Yes. We offer a quality guarantee on all parts supplied. If a part is found to be non-conforming upon receipt, contact us within 7 days for resolution. Terms are confirmed at the time of order.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
