分类
EE66 – 20mm x 20mm EE77 – 25mm x 25mm EE99 – 32mm x 32mm
TM66B – 1/2″ BSPT x 20mm x 20mm TM77C – 3/4″ BSPT x 25mm x 25mm TM99C – 3/4″ BSPT x 32mm x 32mm