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Overview
The GJ841X-II-6Z series pneumatic pinch valve is a pinch-type control valve specifically engineered for demanding industrial piping systems handling fluids containing particles, fibers, or viscous substances. This product series covers nominal diameters from DN20 to DN300, featuring an extremely compact and straightforward structure with standardized flanged connections, making it ideal for integration into fluid control nodes of large and medium-sized industrial networks such as mining and metallurgy, chemical and pharmaceutical, electric power and environmental protection, as well as wastewater treatment. The valve utilizes a pneumatically actuated pinching principle, where compressed air squeezes the internal rubber sleeve to achieve opening and closing, operating smoothly and reliably within a pressure range of 0 to 0.6 MPa. The valve body is crafted from high-quality cast iron, cast aluminum, and cast steel, paired with premium weather-resistant rubber sleeves, maintaining excellent sealing performance and fatigue resistance under operating temperatures up to 85°C. It stands as an ideal core component for the transport and shut-off control of coarse fluid media in modern industrial applications.

Product Image:GJ841X-I-6Z Pneumatic Pinch Valve
Feature
Wide Bore Range with Flanged Connections: Tailor-made for DN20 to DN300 industrial pipelines with extensive size coverage, featuring standardized flanged connections for convenient and reliable installation, perfectly matching domestic and international industrial piping configurations.
Pneumatic Actuation with Instant Response: Adopts pneumatic drive mechanism powered by compressed air, delivering swift and decisive opening and closing actions with precise control, particularly suitable for remote operation or automated integration in industrial environments.
Superior Temperature Resistance and Sealing: Optimized through targeted material selection, suitable for media temperatures up to 85°C, capable of handling ambient water and compressed air systems with ease, while also demonstrating excellent adaptability to media containing minor particulate impurities.
Triple-Material Valve Body for Flexible Selection: Cast iron body offers high strength and cost-effectiveness, ideal for conventional water and air applications in power plants and wastewater treatment; cast aluminum body provides lightweight construction and excellent heat dissipation, suitable for mobile or suspended equipment with weight constraints; cast steel body is specifically engineered for high-pressure or impact-loaded conditions, delivering outstanding impact resistance and fatigue strength.

Structure Diagram: GJ841X-I-6Z Pneumatic Pinch Valve
Specification Sheet
| Bore Size (DN) | Working Pressure | Control Pressure | Max. Differential Pressure |
| DN25 ~ 200 | max 4 bar | max 6 bar | 2 bar |
| DN250 ~ 300 | max 3 bar | max 4.5 bar | max 1.5 bar |

Outline Diagram: GJ841X-I-6Z Pneumatic Pinch Valve
Outline Dimension Table
| Nominal Diameter (DN) | L | H | I | D | Flange Standard |
| 20 | 155 | 70 | 75 | 105 | PN10 |
| 25 | 160 | 75 | 155 | 125 | PN10 |
| 40 | 190 | 85 | 110 | 145 | PN10 |
| 50 | 210 | 95 | 125 | 160 | PN10 |
| 65 | 250 | 115 | 145 | 180 | PN10 |
| 80 | 300 | 130 | 160 | 195 | PN10 |
| 100 | 345 | 185 | 180 | 215 | PN10 |
| 125 | 420 | 220 | 210 | 245 | PN10 |
| 150 | 500 | 245 | 240 | 280 | PN10 |
| 200 | 540 | 270 | 295 | 335 | PN10 |
| 250 | 560 | 285 | 350 | 390 | PN10 |
| 300 | 706 | 365 | 400 | 440 | PN10 |
Special Note: Zhejiang Shanliu Valve Technology Co., Ltd. is a high-end valve brand under Kaivex Group. Valve product R&D and iteration speed is relatively fast. The above technical parameters and specification documents, including product overview and features, performance specifications, parts names and materials, CAD structural drawings, overall dimensions and weights, and valve instruction manuals, are for reference only. For actual engineering applications, please contact our sales engineers for free support. Thank you!

Model:
GJ41X-6LSpecification:
DN25~400Pressure:
0.6MPaMaterial:
Aluminum alloy, Cast iron, Cast steel
Model:
GJ41X-6ZSpecification:
DN50~400Pressure:
0.6MPaMaterial:
Gray cast iron
Model:
GJ6K41X-6ZSpecification:
DN25~400Pressure:
0.4Mpa~0.6MpaMaterial:
Aluminum alloy, cast iron, cast steel