Yokesleeves ? furnished in ductile Ni - resist or aluminum - bronze to reduce operating torque.
轭架套管 - 采用含镍抗腐蚀球墨铸铁或铝青铜材料制作以减少操作扭矩.
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Low - friction, acid - resistant Ni Resist stem nut.
低摩擦 、 耐酸耐蚀镍合金阀杆螺母.
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Acid resistant Ni resist or bronze stem nut.
耐酸耐蚀镍合金或青铜阀杆螺母.
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