Sleeves for PREMAFLEX pinch valves
The highly elastic sleeves are the core pieces of our pinch valves and inner-tube valves. The sleeve is centred in the casing and is held on both sides by clamping flanges or clamping pieces. Built-in fabric inserts guarantee the closure of the sleeve in one plane to the central axis as well as a long service life. Due to the solid and simple construction of our PREMAFLEX pinch valves, the replacement of this spare part is possible with just a few movements and therefore contributes to low maintenance costs. With the help of detailed assembly instructions, a new sleeve can be installed on site and production downtimes can be shortened. For this reason, our large stock is kept up-to-date with almost all common nominal sizes and elastomer qualities for your required operating conditions.
Overview of the elastomer qualities of our sleeves (other qualities on request)
| NR standard | Natural rubber black | max. 80°C |
| NR SKAZ | Natural rubber black (particularly resistant to abrasion) | max. 80°C |
| NR LQ-clear | Natural rubber food-grade clear | max. 80°C |
| NR LQ-black | Natural rubber food-grade black | max. 100°C |
| NR E-conductive | Natural rubber electrical conductive | max. 80°C |
| CR | Neoprene black | max. 100°C |
| NBR | Nitrile butadiene rubber black | max. 100°C |
| NBR LQ-clear | Nitrile butadiene food-grade clear | max. 100°C |
| NBR E conductive | Nitrile butadiene electrical conductive | max. 100°C |
| EPDM | EPDM black | max. 120°C |
| EPDM LQ-clear | EPDM food-grade clear | max. 120°C |
| SBR | Styrene butadiene black | max. 100°C |
| FPM | Viton black | max. 100°C |
| MQ | Silicone translucent | max. 150°C |
| IIR | Butyl black | max. 100°C |
| CSM | Hypalon black | max. 100°C |