For the smaller pipe diameters, the successful NR 010 line has a special version in 1½” and 2”. This is a plastic, spring-loaded clapper check valve with female screw thread connection. The NR-010 has a maximum pressure of 10 bar. This non-return valve is easy to open on the upper side by unscrewing the cover. This type promotes quiet closing and limits water hammer.
This non-return valve has a completely free passage and hence low pressure loss, a particular benefit in intake lines. Thanks to its special soft seals and an extra smooth sealing surface, this non-return valve closes even with extremely low pressures.
In pressure and intake lines, also for protection of filters, in flushing systems for irrigation (e.g. Kameleon High).