分类
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