旋塞

The advantage of stopcock used as pitch valve;2. The results showed that the failure of stopcock was corrosive wear and abrasive .

采用金相显微镜和扫描电镜对在碱性介质中发生泄漏的不锈钢旋塞阀进行了宏微观形貌和金相组织分析；并采用光电直读光谱仪、EDS、红外碳硫分析仪和NHO分析仪对旋塞阀材质和表面沉积物进行了系统的表征分析。

B. In order to further reduce the stopcock of the hoisting force to resist, commonly used methods to reduce cocks in diameter, so plug valves usually rectangular flow channel, this method in reducing the torque plug valves headstock the same time, increases the stopcock of the fluid resistance C.

B。 为了进一步减少旋塞阀的启闭力拒，通常采用减少旋塞直径的方法，故旋塞阀通常采用矩形流道，此方法在减少旋塞阀启闭力矩的同时，增大了旋塞阀的流体阻力 C。

Analyse geometry warp between faucet body of stopcock and its plug becarse processing method and technics was analyzed;several methods of eliminating cone surface processing warp were Introduced and the best sealing effect was achieved.

分析了旋塞阀旋塞体与塞子锥面因加工方法与工艺不当而产生的几何偏差，给出了消除锥面加工产生偏差的几种方法。

This valve's spring support structure, has overcome the traditional stopcock leak-proof energy balance, and easy to rust away the flaw, the alone biased seal design, compared the traditional stopcock to reduce the operation pitch of strand greatly, and maximum limit reduced the packing surface attrition, lengthened valve's service life.

该阀的弹性座结构，克服了传统旋塞阀密封性能差且易锈蚀的缺陷，独具的偏心密封设计，较传统旋塞阀大大降低了操作扭距，且最大限度地减少了密封面的磨损，延长了阀门的使用寿命。

If the alarm check cocks closed, the alarm is still sound, it should check whether the verification cock tightly closed, in the alarm valve annular tank whether the accumulation of obstacles, alarm valve under the rubber flap is aging or wrinkles.

若警铃校验旋塞关闭后，警铃仍发声，则应检查校验旋塞是否关紧、在报警阀的环形水槽上是否积聚了障碍物、报警阀瓣下的橡胶是否老化或皱褶。

From the high-pressure oil-nozzle high-pressure injection of seal oil, a high-pressure seal around the cock ring, that is, cone valve and cocks, a layer of oil film between the sealing surface, both can be closed lubrication, open and close easily.

从高压油咀注入的高压密封油，在旋塞周围形成高压密封环，即阀体和旋塞锥体密封面之间有一层油膜，既能封闭又能润滑，启闭容易。

The host produces: The wedge type gate valve, the bright pole coal gas gate valve, the gate valve, the electrodynamic balance-like double damper plate gate valve, the box thread gate valve, the bright pole underground gate valve, the electrically operated dark pole wedge type gate valve, seals the gate valve, the knife gate valve, the cut-off valve, the box thread cut-off valve (Japanese-style, Soviet type), to turn on lathe softly opens the type check valve, to risefall the check valve, the noise elimination check valve, to clamp the small dish shape check valve, the vertical check valve, to stand lies the dual purpose check valve, the small dish shape by-pass valve, the by-pass valve, the stopcock, the Three Contacts stopcock, the plunger valve, the ball valve, the flange reed valve.

主产：楔式闸阀、明杆煤气闸阀、闸阀、电动平衡式双闸板闸阀、内螺纹闸阀、明杆地下闸阀、电动暗杆楔式闸阀、软密封闸阀、刀型闸阀、截止阀、内螺纹截止阀、旋启式止回阀、升降止回阀、消声止回阀、对夹碟形止回阀、立式止回阀、立卧两用止回阀、碟形平衡阀、平衡阀、旋塞阀、三通旋塞阀、柱塞阀、球阀、法兰蝶阀。

Move the high side hose to test cock No. 4, low side hose to test cock No. 3 and open both test cock No.

Step 7 将高端软管移到测试旋塞4号上，低端软管移到测试旋塞3号上，然后开启测试旋塞3号和4号。

Move the high side hose to test cock No. 4, low side hose to test cock No. 3 and open both test cock No.

Step 7 将高端软管转移到测试旋塞4号，低端软管转移到测试旋塞3号，开启两个测试旋塞3号和4号。

Move the high side hose to test cock No. 4, low side hose to test cock No. 3 and open both test cock No.

Step 7 将高端软管移到测试旋塞4号，低端软管移到测试旋塞3号，开启测试旋塞3号和4号。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。