CLAMPON Slurry Pinch Valves
CLAMPON (PTY) Ltd manufactures maintenance-friendly and cost effective slurry pinch valves that do not compromise on good quality. We ensure that our slurry pinch valves are manufactured to suit various applications.
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Why CLAMPON Pinch Valves?
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CLAMPON valve sizes are available from 50mm to 350mm. Larger sizes are available on request.
Pinch valves all over the world operate on the same principal and are manufactured with heavy material, therefore making them cumbersome to handle.
CLAMPON Slurry Pinch Valves are Built with Cost-Saving in Mind
CLAMPON pinch valves differ from the norm in the sense that they are built from lightweight materials, however, the design takes care of the body strength, and the same principal applies for the wear sleeve.
Lighter built valves require less installation effort in difficult applications, less bracketing on piping, and less transport costs.
Wear Sleeves
Wear Sleeves are the most crucial component in pinch valves. For that reason, special attention was paid to the construction materials and the application method of these materials, ensuring a quality product.
Our sleeves are hand-built with a wide range of natural and synthetic polymers up to a CWP (Constant Working Pressure) of 2500kPa. Due to the materials of construction, the operating torque is less and the cost of actuating the valves is therefore drastically reduced.
CLAMPON Slurry Pinch Valves are installed in every mining application in South Africa, and are constantly outperforming its competitors – even on Chrome Slurry.
Should you require more information regarding the CLAMPON Slurry Pinch Valves, please contact us.
Diaphragm Valve
A diaphragm valve consists of a cast iron two-piece body, the top half housing the closing mechanism and diaphragm, and the bottom half being rubber-lined for wear resistance.
The negative aspect of this design is the fact that the body has a restriction or bulge in the flow line to accommodate the closing mechanism which aggravates wear. Due to the complexity and weight of this type of valve, it is difficult and expensive to maintain.
Open Frame Slurry Pinch Valve |
Totally Enclosed Slurry Pinch Valve |
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A pinch valve consists of a metal frame to accommodate the shut off mechanism and a rubber wear sleeve.
The rubber sleeve is hand-built with various types of rubber compound depending on the application. The rubber wear sleeve can be described as a short full bore hose. Full bore meaning that no restriction exists and therefore there is much less wear. Wear can be controlled by varying the shore hardness of the rubber compound, however natural gum compounds are best suited for this purpose. The only drawback with the pinch valve is that should the rubber sleeve wear through, the product or slurry will contaminate the immediate area. For this reason we also manufacture a Totally Enclosed Pinch Valve.
CLAMPON has specifically designed and manufactured valves that are as maintenance-friendly as possible, while being made available at competitive prices.
For more information about CLAMPON valves, please contact us.
CLAMPON Slurry Pinch Valve Sleeve Compound Schedule
Figures Show Quick-Reference Scale 1 – 10
| Common Name | NEOPRENE | NITRILE | BUTYL | HYPALON | E.P.D.M. | BUTADIENE | VITON | GUM | XPLE | SILICON |
| ASTM | CR | NBR | IIR | CSM | EPDM | NR/SBR | FPM | NR | ||
| Tensile Strength | GOOD 6-7 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
GOOD 6-7 |
EXCELLENT 9 | FAIR 4-5 |
GOOD 6-7 |
GOOD 6-7 |
POOR 1-3 |
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| Tearing Resistance | GOOD 6-7 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
FAIR 4-5 |
GOOD 6-7 |
GOOD EXCELL 7- 8 |
FAIR 4-5 |
GOOD EXCELL 7- 8 |
FAIR 4-5 |
POOR 1-3 |
| Abrasion Resistance | GOOD EXCELL 7- 8 |
FAIR-GOOD 5-6 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
GOOD 6-7 |
GOOD EXCELL 7- 8 |
GOOD 6-7 |
EXCELLENT 9 |
FAIR 4-5 |
POOR 1-3 |
| Flame Resistance | VERY GOOD 7 |
POOR 1-3 |
POOR 1-3 |
GOOD 6-7 |
POOR 1-3 |
POOR 1-3 |
GOOD 6-7 |
POOR 1-3 |
POOR 1-3 |
EXCELLENT 9 |
| Petrol, Oil and Gasoline | GOOD 6-7 |
GOOD EXCELL 7- 8 |
POOR 1-3 |
GOOD 6-7 |
POOR 1-3 |
POOR 1-3 |
EXCELLENT 9 |
POOR 1-3 |
EXCELLENT 9 |
POOR 1-3 |
| Gas Permeation | GOOD 6-7 |
GOOD 6-7 |
OUTSTANDING 10 |
GOOD EXCELL 7 – 8 |
FAIR-GOOD 5-6 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
GOOD 6-7 |
| Weathering | GOOD EXCELL 7- 8 |
POOR 1-3 |
EXCELLENT 9 |
VERY GOOD 7 |
EXCELLENT 9 |
POOR 1-3 |
EXCELLENT 9 |
POOR 1-3 |
EXCELLENT 9 |
EXCELLENT 9 |
| Ozone | GOOD 6-7 |
POOR 1-3 |
EXCELLENT 9 |
VERY GOOD 7 |
OUTSTANDING 10 |
POOR 1-3 |
EXCELLENT 9 |
POOR 1-3 |
EXCELLENT 9 |
EXCELLENT 9 |
| Heat Ageing | GOOD 6-7 |
GOOD 6-7 | EXCELLENT 9 |
VERY GOOD 7 |
EXCELLENT 9 |
FAIR 4-5 |
OUTSTANDING 10 |
POOR 1-3 |
FAIR 4-5 |
EXCELLENT 9 |
| Low Temp. | FAIR-GOOD 5-6 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
POOR 1-3 |
GOOD EXCELL 7- 8 |
GOOD 6-7 |
GOOD 6-7 |
EXCELLENT 9 |
FAIR-GOOD 5-6 |
EXCELLENT 9 |
| Gen. Chem. Resistance | GOOD 6-7 |
FAIR-GOOD 5-6 |
GOOD 6-7 |
GOOD 6-7 |
GOOD 6-7 |
FAIR-GOOD 5-6 |
EXCELLENT 9 |
FAIR 4-5 |
EXCELLENT 9 |
POOR 1-3 |
| Hardness Range | 15 – 95 | 25-95 | 11 – 75 | 10 – 90 | 25 – 95 | 10 – 90 | 60 – 90 | 30 – 90 | 35 -85 | |
| S.G. (Base) | 1.23 | 0.96 TO 1.02 | 0.92 | 1.12 | 0.86 | 0.92 | 1.8 | 0.97 | 1.1 TO 1.36 | |
| Temp. Range | -10 +100 | -20 + 100 | -30 + 110 | -15 + 300 | -25 + 80 | -50 + 250 |
For slurry applications, gum or natural rubber will be used.
Valve Specifications
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The valve body material is mild steel; however it is also available in any grade stainless steel.
The face-to-face dimensions of CLAMPON valves are the same as diaphragm valves, and they are suitable with all types of actuators. At CLAMPON, we make it our mission to ensure that you are supplied with the most high-quality products for any application. Should you require a larger-sized valve, please contact us and we will be happy to manufacture whatever you need according to your specifications. |
Double Actuated Slurry Pinch Valve
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The Clampon Slurry Pinch Valve design allows for different types of actuation. |
Totally Enclosed Slurry Pinch Valve
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The CLAMPON Totally Enclosed Slurry Pinch Valve is designed specifically to replace diaphragm valves, and has the same face-to-face. |
Pinch Valve Measurement Table |
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VALVE NOMINAL BORE |
F/F | W | Open H | Closed H |
| 50mm | 197 mm | 208 mm | 402 mm | 452 mm |
| 75mm | 261 mm | 244 mm | 510 mm | 585 mm |
| 100mm | 324 mm | 286 mm | 530 mm | 630 mm |
| 150mm | 416 mm | 367 mm | 689 mm | 839 mm |
| 200mm | 530 mm | 498 mm | 799 mm | 999 mm |
| 250mm | 645 mm | 604 mm | 1034 mm | 1284 mm |
| 300mm | 760 mm | 702 mm | 1141 mm | 1441 mm |
| 350mm | 930 mm | 815 mm | 1488 mm | 1838 mm |
| 400mm | 1215 mm | 981 mm | 1750 mm | 2150 mm |
| 450mm | 1350 mm | 981 mm | 1750 mm | 2150 mm |
CLAMPON Actuated Slurry Pinch Valve Specification Schedule |
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| Open Configuration |
Closed Configuration |
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| VALVE SIZE | A | B | B1 | C | D |
| 100/4″ | 286 | 307 | 407 | 324 | 160 |
| 150/6″ | 367 | 376 | 526 | 416 | 215 |
| 200/8″ | 498 | 481 | 681 | 530 | 270 |
| 250/10″ | 604 | 632 | 882 | 645 | 325 |
| 300/12″ | 702 | 699 | 999 | 760 | 375 |
| 350/14″ | 815 | 966 | 1316 | 930 | 480 |
