旋塞阀概述 Plug valve summary
旋塞阀构造简略,启闭敏捷,流体阻力小。这些年作为历被大家选用的阀门之一,不光没有被球阀等型式的阀门所替代,反而商场出现愈来愈火爆的趋势。
旋塞阀是关闭件或柱塞形的旋转阀,通过旋转90度使阀塞上的通道口与阀体上的通道口一样或分隔,完结敞开或关闭的一种阀门。旋塞阀的阀塞的形状可成圆柱形或圆锥形。在圆柱形阀塞中,通道一般成矩形;而在锥形阀塞中,通道成梯形。
Plug valve use Plug with holes as valve disc,turn disc and stem to open and shut valve.
Structure plug valve is simple,speedy open and shut,small flow resi-stance.lt's the earliest valve used in the history for human,it's not only no instead of by another type valves such as ball valve,but also have more market in the future.
结构特点 Structure features
1. 阀体进出口端窗口设计为双道沟槽密封环结构,旋塞在旋转过程中,其密封副件的密封比压在不断变化,直至到达全开关位置时,产生足够的密封比压,密封副达到零泄漏。
2. 双道沟槽密封环既可以使PTFE衬套稳固在阀体内不产生位移,又可吸收由于温差变化引起衬套产生的微量变形,同时衬套与旋塞之间产生有力的擦拭作用,又提高了密封面的使用寿命。
3. 塞轴上部采用了一个PTFE膜片和O型圈与调节垫片组合,既可以调整密封面的密封比压,使塞子转动灵活,又能保证进、出口端和中法兰连接端的密封。
4. 整个密封过程可近似认为与管道内压力无关。
5. PTFE衬套内,根据使用温度和工作介质采用不同衬料的填充物,润滑好、寿命长。
1. Design of valve inlet and outlet bore is double path groove seal ring structure,seal pressure rating is changing between seal component,till ti full open and close position,then produce enough seal pressure rating,no any leakage of seal component.
2. Double path groove seal ring structure not only make PTFE lining fixed in the body and can't remove,but also increase powerful friction between lining layer and plug,to enhance the using life of seal face.
3. ln the top of plug is a component consists of PTFE diaphragm,O ring and modulating gasket,it can modulate seal face and seal pressure rating,it makes plug rotary,and also keep connection seal of inlet & outlet and middle flange.
4. Whole seal process almost have no any relation with inner pipeline pressure.
5. lnto the PTFE liner,use different fill in lining material base on the using temperature and working medium,good lubricate and long using life
设计规范 Design specification
遵循规范 Follow the norms | STANDARD |
设计与制造 Design and manufacture | API 599 |
结构长度 Face to face | API 599(ANSI 150Lb~300Lb NPS1/2~12) ANSI B16.10(ANSI 600Lb或NPS>12) |
法兰尺寸 Dimension of flange | ANSI B16.5 |
压力试验 Pressure test | API 598 |
标志 Symbol | MSS SP-25 |
供货 Supply | API 599 |
结构特征 Structure features
主要零部件材料表 Material for main parts
序号 No. | 零件名称 Parts name | 灰铸铁 Gray iron | 碳钢 Carbon steel | 不锈钢 Stainless steel | 超低碳不锈钢 Ultra low-carbon stainless steel | ||
Z | C | P | R | PL | RL | ||
1 | 阀体、阀盖 Body,Cap | A126 Ci35A | A216 WCB | CF8 | CF8M | CF3 | CF3M |
2 | 衬里层、阀座、卡套 Lining,valve plate,Ferrule | PFEP(F4)、PCTFE(F3)、PVDF(F2)、FEP(F46)、PFA PPL | |||||
3 | 塞子 Plug | A216、WCB、A105、MONEL合金(Alloy)、CF8、CF8M、CF3、CF3M | |||||
4 | 调节垫圈 Adjust screw | A182 F6、A182 F304、A182 F316、A182 F304L、A182 F316L | |||||
5 | 调节垫片 Conditioning pads | RPTFE PFA | |||||
6 | O型圈 O ring | VITION(氟橡胶) | VITION(氟橡胶) | ||||
7 | 螺栓 Bolt | A193 B7 | A193 B8M | ||||
8 | 螺母 Nut | A194 2H | A1948 | ||||
9 | 手柄 Hand wheel | A105/EP.CR | A105/EP.CR |
咨询或订购 气动衬氟旋塞阀 时需提供一下参数: | |
· | 旋塞阀的型号,老客户如需再次订购可直接提供合同编号。 |
· | 旋塞阀的口径(螺纹可提供螺纹直接,法兰需提供法兰孔距离尺寸)。 |
· | 旋塞阀是否需配套附件或辅助设备,如需请注明。 |
· | 旋塞阀的工作压力(额定压力)。 |
· | 旋塞阀使用的介质(是否带有杂质),以及介质温度。 |
服务承诺 | |
· | 产品严格按照国家 GB标准、HG 标准及美国 API 等标准设计、制造、验收。密封面硬度达到国家规定要求,宽度超过国家标准。 |
· | 红阀产品质保期为自出厂起 12 个月,(认为损坏除外)。 |
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