阀盖

Design accord with API 6A Norm; Body of valve with valve lids, Flashboard with valve set according to needs adopt metal with metal seal up or nonmetal seal up, Valve rod and valve lid between with fall seal up convenient for valve bring press replacing valve stem packing, Dense cover built-up welding hard alloy,Endures cauterization, Endures impact.

设计符合 API 6A 规范；阀体与阀盖、闸板与阀座根据需要采用金属与金属密封或非金属密封，阀杆和阀盖间设有倒密封便于阀的带压更换阀杆填料，密封面堆焊硬质合金，耐腐蚀、耐冲击。

Valve:(dark-parallel) 1 - wedge-shaped gate valve; 2 - sleeve nut; 3 - Valve; 4 - stem; 5 - valve cover; 6 - Thrust Convex shoulder; 7 - Packing letter flange; 8 - packing; 9 - Packing Gland, 10 - hand wheel; 11 - valve cover pad.

闸阀：1--楔形闸瓣；2--套筒螺母；3--阀体；4--阀杆；5--阀盖；6--止推凸肩；7--填料函法兰；8--填料；9—填料压盖；10--手轮；11--阀盖垫。

4 Components in the guide ring seat surface, and to maintain stem vertically in a clean work surface; 4.5 Lubrication and installed on top of the spring washer bearings and bearing connecting rings, and lubricating the bottom of the spring washers, valve cover and gasket components will be placed in position inside the valve cover; 4.6 will regulate the bolt lock nut bolt screw to adjust the top.

4.4 将组件座于导环面上，并保持阀杆垂直地处于清洁的工作面上； 4.5 润滑并在顶部弹簧垫圈上安装轴承和轴承连接环，和润滑底部弹簧垫圈，将阀盖及垫圈组件放在阀盖内的位置上； 4.6 将调节螺栓锁紧螺母拧到调节螺栓的顶部。

Elongation type valve cover: one valve cover, stuffing box and the distance between the valve cover flange is longer, for high or low temperature conditions.

伸长型阀盖：一种阀盖，填料函与阀盖法兰之间的距离较长，用于高温或低温工况。

From the valve cover structure, according to different application requirements, can use regular valve cover, also can use the long-necked type valve cover, or with heat or heat-absorbing film of the long-necked type valve cover, in addition to Bellows seal valve cover.

从上阀盖结构看，根据不同应用要求，可采用普通阀盖，也可采用长颈型阀盖或带散热或吸热片的长颈型阀盖，另外还有波纹管密封型阀盖。

In addition to extending through the valve cover, so that the temperature packing medium temperature of the long neck away from the valve cap, the can increase heat or heat-absorbing film, made with heat, or heat-absorbing film of long-necked type valve cover to medium temperature is reduced or increased.

除了通过把阀盖延伸，使填料处温度远离介质工作温度的长颈型阀盖外，也可增加散热或吸热片，制成带散热或吸热片的长颈型阀盖，使介质温度得到降低或提高。

Long-necked valve cover design mainly the design of the neck length L, L refers to the stuffing to the bottom of the sealing seat surface distance (Figure 1), which, and the material thermal conductivity, thermal conductivity and surface area factor, cooling 隔膜阀 area, and other factors, more complicated calculation, generally obtained from the experiment.

长颈阀盖的设计主要是颈部长度L的设计，L指的是填料函底部到上密封座上表面的距离（如图1），它和材料的导热系数、导热面积及平衡阀表面散热系数、散热面积等因素有关，计算比较繁琐，一般由实验法求得。

The cut-off valve with pilot valve without hand wheel, stem and lift nut inside will guide block and guide slot Butterfly Valves to guide sleeve, the disc-shaped disc to disc type bowl shape, and holes in the bottom of the flap valve to open, the valve cover of the original valve stem hole to hole diversion, because of increased pressure ring, ring, and the valve flap to class mortar, so that the flow passage separated the upper chamber cavity, external cavity, cavity, in the cavity and The external cavity increases with draft tube and stainless steel manual ball valve, flap valve in the cover plate and the center of the end of installing the spring, the upper flap valve install compression seal of the pressure ring, outside the cavity of the wall to open a Drainage holes.

带先导球阀的截止阀无手轮、阀杆和内升降螺母，将导向块与导向槽改为导向套，将盘形阀瓣改为类钵体形阀瓣，并在底部开阀瓣孔，电动蝶阀将阀盖原阀杆孔改为导流孔，因增加压环、密封圈和将阀瓣改为类钵体，使上通流腔分隔为上腔、外腔、内腔，在上腔与外腔的外部加设有导流管与不锈钢手动球阀，在盖板与阀瓣底的中心部加设弹簧，阀瓣上部加设压紧密封圈的压环，在外腔的壁上开有放水孔。

Pay valve base , pay valve petal, main valve base, main valve petal, silent flat and piston Not Xiu steel Regulate spring Silico-manganese steel

阀体，阀盖，下阀盖灰铸铁铸钢主阀瓣付阀瓣弹簧硌钒钢付阀座，付阀瓣，主阀座，主阀瓣，默片，活塞不绣钢调节弹簧硅锰钢

The trap body and cover shall be manufactured out of cast iron, the diaphragm cover shall be forged brass, the diaphragm shall be duplex phosphor bronze type with stainless valve cone, the condensate valve and seats shall be hardened stainless steel and the float shall be manufactured out of seamless copper.

这种疏水阀的阀体和阀盖应该采用铸铁制造，隔膜盖应该采用锻造黄铜，这种隔膜应该是双磷青铜类型并配置不锈钢阀芯，凝结水阀和阀座应该采用硬化不锈钢，浮子应该采用无缝铜制造。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。