Ukulawulwa kwe-pneumatic ezingxenyeni ezibalulekile, izingxenye zendlela yokulawula indlela eyodwa. Imvamisa kumisiwe phakathi kwesilinda ne-valve ehlehlisayo, ukuze umoya oku-cylinder ungadluli ku-valve ehlehlisayo ne-valve ekhishwe ngqo.
Kufanele izimo lapho isilinda sidingeka ukuhamba ngokushesha.