SOLH SCV series dedicated air-operated coating valves include 2-way SCV12 and 3-way SCV13 for paint, thinner and purge air switching & fast color change control. Wetted parts adopt composite PTFE+FPM solvent-resistant seals, and isolation diaphragm separates driving mechanism from coating liquid to avoid paint adhesion, achieving service life over 5 million cycles. Fully pneumatic structure without electric parts eliminates spark risks for explosion-proof coating workshops. Matched manifold base supports centralized control of up to 15 colors; optimized internal flow channel cuts thinner consumption during flushing and prevents cross-color contamination. Available for single standalone mounting or dense manifold stacking, widely applied in auto, furniture, hardware & home appliance automatic coating color change systems, solvent circulation cleaning and spray gun purge air circuits.
SCV series is a dedicated air-operated switching valve specially designed for automated paint spray production lines, split into two models: 2-way SCV12 and 3-way SCV13. Developed for switching and control of paint, thinner and purge air, it delivers fast multi-color switching, low solvent consumption during flushing and ultra-long service lifespan. As the core control component of automatic spraying and color change systems, it is widely adopted in mass coating workshops.
Core Product Advantages
1. Fast Multi-Color Switching to Boost Production Efficiency
A single spray gun can switch between multiple paint colors without equipment replacement. One matched manifold base supports centralized control for up to 15 different colors, drastically shortening color change downtime and raising throughput of fully automatic coating lines.
2. Optimized Flow Path to Cut Thinner Consumption
Streamlined internal fluid channel design requires minimal thinner volume to fully clean residual paint inside the valve and connected pipelines. It reduces daily solvent material cost while achieving cleaner color transition without cross-color contamination.
3. Corrosion-Resistant Composite Sealing for Paint & Solvent Media
Internal wetted sealing structure adopts combined PTFE + FPM elastomer materials, featuring outstanding resistance to paints, thinners and industrial cleaning solvents. No swelling, aging or chemical erosion under long-term contact with aggressive coating fluids.
4. Isolated Diaphragm Construction Anti-Paint Adhesion & Extended Lifespan
Special separating diaphragm structure completely isolates the driving actuator from paint media; the internal moving core never directly contacts coating liquid. Compatible with oil mist lubrication for pneumatic actuators, with a verified service life exceeding 5 million switching cycles.
5. Full Pneumatic Drive for Intrinsic Safety in Coating Zones
100% air-operated actuation with zero electrical components, eliminating electric spark ignition risks in flammable paint and solvent workshops. Stable switching action with fast response for continuous round-the-clock coating operation.
Supports two installation modes: independent single-valve mounting or dense stacked manifold assembly. Compact stacked layout saves workshop installation space and arranges piping neatly, perfectly matching standard modular color change control units.
Model Classification & Functional Application
--SCV12 (2/2 Way Air Operated Valve): For thinner supply, purge air control and pipeline solvent flushing circuits
-- SCV13 (3/2 Way Air Operated Valve): For paint feeding, circulation loop and continuous coating material supply control
Full Technical Specifications
Parameter Item
Specification Details
Circuit Configuration
SCV12: 2-way / SCV13: 3-way
Operation Type
External air pilot actuated
Applicable Media
Paint, solvent thinner, purge compressed air
Max Fluid Working Pressure
0 ~ 0.7 MPa
Required Pilot Air Pressure
0.4 ~ 0.7 MPa
Effective Orifice Cross-Sectional Area
9 mm² (Cv = 0.5)
Ambient Operating Temperature
5℃ ~ 60℃
Port Thread Sizes
Fluid inlet / circulation port: G1/4, Rc1/4Pilot air control port: Rc1/8
Net Single Valve Weight
Approx. 0.15 kg
Mounting Options
Standalone single mount / manifold stack assembly
Typical Industrial Application Scenarios
--Automatic coating production lines for automotive parts, home appliances, furniture and metal hardware
-- Centralized paint supply & fast multi-color switching manifold systems for spray guns
-- On-off switching control for paint circulation, thinner flushing and purge air circuits
-- Coating machinery requiring solvent resistance, low solvent waste, long service life and explosion-safe pneumatic design
One Sentence Summary
SOLH SCV dedicated air-operated spray coating valve enables ultra-fast multi-color switching, reduced thinner consumption, full solvent-resistant PTFE/FPM sealing, 5-million-cycle long lifespan and spark-free all-pneumatic operation, serving as the standard core component for automated paint line color change manifold systems.
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