Igbẹhin SPGW jẹ apẹrẹ fun awọn silinda eefun ti n ṣiṣẹ ni ilọpo meji eyiti o lo ninu ohun elo hydraulic eru.Pipe fun awọn ohun elo ti o wuwo, o ṣe idaniloju iṣẹ ṣiṣe giga.O pẹlu adalu Teflon oruka lode, oruka inu roba ati awọn oruka afẹyinti POM meji.Iwọn rirọ roba n pese rirọ radial iduroṣinṣin lati san isanpada yiya.Lilo awọn oruka onigun mẹrin ti awọn ohun elo oriṣiriṣi le jẹ ki iru SPGW ṣe deede si ọpọlọpọ awọn ipo iṣẹ.O ni ọpọlọpọ awọn anfani, gẹgẹ bi awọn resistance resistance, ikolu resistance, ga titẹ resistance, rorun fifi sori ati be be lo.