分类
SF6B – 1/2″ BSP x 20mm SF7B – 1/2″ BSP x 25mm SF6C – 3/4″ BSP x 20mm SF7C – 3/4″ BSP x 25mm SF9C – 3/4″ BSP x 32mm SF9D – 1″ BSP x 32mm
EM6B – 1/2″ BSPT x 20mm EM7B – 1/2″ BSPT x 25mm EM6C – 3/4″ BSPT x 20mm EM7C – 3/4″ BSPT x 25mm EM9C – 3/4″ BSPT x 32mm EM9D – 1″ BSPT x 32mm