ZSH Shanghai Valve Manufzcturing Co.,LTD.

There are two basic types of butterfly valve: D71 series center line butterfly valve, D73 series eccentric butterfly valve. USES the combination of two type body, seat and body lined with integration, the valve is working, only all plastic seat and lining plastic butterfly plate and the media contact, the valve can bear the medium corrosion of lining materials is introduced, using quadrupole seal structure and the sealing surface with heat-resistant anti-aging SI rubber elastic gasket, achieve zero leakage of the medium.

Note: parameters are for reference only, or incomplete. Valves can be selected according to the requirements of different pressure, material, diameter, driving mode. Please contact us by phone or online.

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　　 1、中线蝶阀为整个蝶板与阀座在360°圆周内同心（中线），具有双向密封功能，压力、流量可自由调节；
　　 2、偏心蝶阀为二维方向偏心产品的凸轮效应会使密封副产生足够的密封比压，并且随着工作压力的升高，密封效果较为理想；
　　 3、四级加载弹性密封，保证了阀门内、外的零泄漏。
　　 a:轴与蝶阀一体外衬F46;

b:轴头端面采用弹性O型圈和轴肩处刚性垫圈、弹性橡胶垫组合；
　　 c:轴的径向采用O型圈与金属轴套的组合；
　　 d:阀座镶嵌有弹性条的阀体槽内。
　　 4、采用可弹性垫片定位准确，结构简单。（*采用O型圈是为了防止意外泄漏时的安全措施）。

通径DN	B	H	φ	D1	D2	n-d	L1
40	33	140	120	88	110	4-φ18	230
50	43	150	120	102	125	4-φ18	230
65	46	160	120	122	145	4-φ18	230
80	64	170	120	133	160	4-φ18	250
100	64	180	120	158	180	4-φ18	250
125	70	190	120	184	210	4-φ18	300
150	76	220	120	212	240	4-φ23	300
200	89	240	140	268	295	4-φ23	350
250	114	340	140	320	350	4-φ23
300	114	460	160	370	400	4-φ23

遵循GB/T12238，API 609，MSS SP-67标准