KHB-G1/4-1**,KHB-G3/8-1**,KHB-G1/2-1**,KHB-G3/4-1**,KHB-G1/8-1**,KHB-G11/4-1**,KHB-G11/2-1**,KHB-G2-1**,外螺纹液压高压球阀