该系列球阀特别适用于各焦化厂焦炉氨水、喷射循环系统高低压转换时使用。
一、阀门的连接尺寸与原三通球阀相同，更换方便。
二、特制的增强聚四氟乙烯封圈，其耐磨强度大大提高，显著提高密封圈的使用寿命。
三、独特的内部结构，不仅大大降低了生产成本，而且使加工与维修更加简单化。
四、带倒密封结构的下装式阀杆，不仅防止了阀杆脱出，而且阀杆部位的密封更加可靠。
五、外型结构紧凑，独特三块式设计使阀门外观更完美。

The valve series are especially applicable for the high/low-temperature conversion course in such fields as the ammonia water in coke ovens or the injection circulating system in coke plants.
1.The connection dimension of the valve is identical to that of the above-mentioned
3-way ball valve for convenient replacement.
2.The specially-designed seal ring made from strong polytetrafluoroethylene with much greater abrasion strength could obviously enhance the service life of the ring.
3.The special interior structure applied not only reduces the production cost but also simplifies the processing and maintenance work.
4.The lower-loading Stem with backward sealing construction not only prevents
the handle form backing-out but also ensures the reliability of the scaling part of the handle.
5.With compact structure in configuration,the specially-designed 3-part feature makes the valve much more perfect.

产品型号 Product type	零件名称 Accessory name	零件材料 Accessory material
Q44M-40DN25  Q41F-40DN25	阀体、阀盖 body,Bonnet	WCB
	球体 Ball	1Cr18Ni9Ti
	阀杆 Stem	2Cr13
	密封圈 Sealing ring	增强聚四氟乙烯 RPTFE
	填料 Stuffing	V型聚四氟乙烯 V-shaped PTFE

主要连接尺寸  

公称压力 PN(MPa) Nominal pressure
	试验压力(Mpa)
	壳体 Shell	高压液密封闭 High-pressure liquid sealing	低压气密封 Low-pressure hermetic sealing
4.0	6.0	4.4	0.6
适用温度 Applicable temperture	≤150℃
	氨水等 Liquid ammonia, etc.