PH44Tc型PN10～PN63陶瓷耐磨排渣止回阀
HH44Z、HH44X、HH44T、HH44H型PN10～PN25微阻缓闭止回阀
PH44H-10C、PH44H-16C、PH44H-25型排渣旋启式止回阀
HQ44X-10C、HQ44X-16C、HQ44X-25型微阻球型止回阀
HH44X、HH44T、HH44H型PN10～PN25微阻缓闭止回阀
DHH44X-10C、DHH44X-16C、DHH44X-25型蝶式微阻缓闭消声止回阀
SNH44Fs型PN10、PN16衬里旋启式止回阀
H44TC-10C、H44TC-16C型旋启式陶瓷止回阀
HC44X-10C、HC44X-16C型橡胶瓣逆止回阀
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