止回阀

That's why Watts provides the incomparable Series 7 Backflow Preventers with dual check security.

这就是美国瓦茨提供无以伦比的双止回安全性的系列7防回流阀的原因。

Copper body, corrosion resistant plastic check modules, silicone discs and Buna 'N' seals, stainless steel springs.

铜阀体，耐腐蚀塑料止回模块，硅阀瓣和丁纳橡胶密封，不锈钢弹簧。

Cast bronze body, durable plastic check modules, silicone discs and Buna 'N' seals, stainless steel springs, one union and "O" ring union seal.

铸青铜阀体，双塑料止回模块，硅阀瓣和丁纳橡胶密封，不锈钢弹簧，一个接头和O形环接头密封。

Cast bronze body, durable plastic check modules, injection molded of acetyl resin and PPO, silicone discs and Buna 'N' seals, stainless steel springs, one union and "O" ring union seal.

铸青铜阀体，双塑料止回模块，乙酰树脂和PPO注射模压，硅阀瓣和丁纳橡胶N密封，不锈钢弹簧，一个接头和O形环接头密封。

Machined brass construction, durable plastic check modules, injection molded of acetyl resin, silicone discs, Buna 'N' seals, and stainless steel springs.

机加工黄铜结构，耐用的塑料止回模块，注塑模制乙酰树脂，硅阀瓣，丁纳橡胶密封，以及不锈钢弹簧。

Valve repair professional valve repair plant types are: high-pressure valve repair, valve repair electrical, pneumatic valve repair, high temperature valve repair, valve repair door closing valve repair, door repair butterfly valve, check valve door repair, ball valve repair, valve repair door, regulating valve repair, repair of hydraulic control valves, safety valve repair, valve repair door, trap door repair, door repair plug valves, insulation valve repair, Electromagnetic valve repair, sewage valve repair, vacuum valve repair, cut off the valve repair, valve repair with many management folder valve repair, instrument repair the valve, at the end of the valve repair, gas valve repair, control valve repair , serous valve repair, slurry valve repair, Valve repair, needle-valve repair, three-way valve repair, valve repair tone, slagging-valve repair, valve repair sludge, breathing valve repair, seal valve repair , unloading valve repair ash, slag slurry valve repair, power station valve repair, discharge valve repair, ball valve repair, valve repair door, ceramic valve repair │ flashboard valve repair, valve repair Venetian blind board valve repair, valve repair mud, plunger valve repair, valve repair hydrogen, inspiratory valve repair, door repair reversing valve, electric valve repair, import repair valve, copper valve repair, valve repair and so on the stainless steel valve repair.

阀门维修厂专业阀门维修种类有：高压阀门维修，电动阀门维修，气动阀门维修，高温阀门维修，闸阀门维修，截止阀门维修，蝶阀门维修，止回阀门维修，球阀门维修，减压阀门维修，调节阀门维修，水力控制阀门维修，安全阀门维修，隔膜阀门维修，疏水阀门维修，旋塞阀门维修，保温阀门维修，电磁阀门维修，排污阀门维修，真空阀门修理，切断阀门维修，多用阀门维修，管夹阀门维修，仪表阀门维修，底阀门维修，燃气阀门修理，控制阀门维修，浆液阀门维修，浆料阀门维修，平衡阀维修，针型阀维修，三通阀维修，调门压阀维修，排渣阀维修，排泥阀维修，呼吸阀维修，水封阀门维修，卸灰阀门维修，浆渣阀门维修，电站阀修理，放料阀门维修，浮球阀门维修，温控阀门维修，陶瓷阀维修│插板阀维修，百叶阀维修，盲板阀维修，泥浆阀维修，柱塞阀维修，氢气阀门维修，吸气阀门维修，换向阀门维修，电动阀维修，进口阀门维修，铜阀门修理，不锈钢阀门修理等等的阀门修理。

Valve repair professional valve repair plant types are: high-pressure valve repair electric valve repair │││ high temperature pneumatic valve repair valve repair valve ││ closing valve repair door repair door repair ││ butterfly valve check valve │ ball valve repair door repair door repair relief valve │││ regulating valve repair hydraulic control valve safety valve repair repair │││ valve trap door repair door repair door repair stopcock │││ insulation valve repair Electromagnetic valve repair valve repair sewage │││ vacuum valve repair cut off valve repair with valve repair many │││ tube folder valve repair instrumentation valve repair at the end of the valve repair │││ gas valve control valve repair repair serous valve repair │││ slurry valve repair balance valve repair needle-valve repair │││ transfer three-way valve repair door valve repair valve repair slagging ││ Sludge │ breathing valve repair valve repair water valve repair │││ dumping ash slurry residue valve repair valve repair valve repair station │││discharge valve repair valve repair ball valve ││ valve repair door repair ceramic valve repair │││ flashboard valve repair Venetian Blind plate valve repair valve repair │││ mud valve repair plunger valve repair valve repair hydrogen │││ inspiratory valve repair door reversing valve repair electrical repair │││ copper imports valve repair valve repair │ stainless steel valve repair of valve repair and so on.

阀门维修厂专业阀门维修种类有：高压阀门维修│电动阀门维修│气动阀门维修│高温阀门维修│闸阀门维修│截止阀门维修│蝶阀门维修│止回阀门维修│球阀门维修│减压阀门维修│调节阀门维修│水力控制阀门维修│安全阀门维修│隔膜阀门维修│疏水阀门维修│旋塞阀门维修│保温阀门维修│电磁阀门维修│排污阀门维修│真空阀门修理│切断阀门维修│多用阀门维修│管夹阀门维修│仪表阀门维修│底阀门维修│燃气阀门修理│控制阀门维修│浆液阀门维修│浆料阀门维修│平衡阀维修│针型阀维修│三通阀维修│调门压阀维修│排渣阀维修│排泥阀维修│呼吸阀维修│水封阀门维修│卸灰阀门维修│浆渣阀门维修│电站阀修理│衬氟阀门修理│放料阀门维修│浮球阀门维修│温控阀门维修│陶瓷阀维修│插板阀维修│百叶阀维修│盲板阀维修│泥浆阀维修│柱塞阀维修│氢气阀门维修│吸气阀门维修│换向阀门维修│电动阀维修│进口阀门维修│铜阀门修理│不锈钢阀门修理等等的阀门修理。

The check module seats and seat discs shall be replaceable.

止回模块阀座和阀座阀瓣应该是可更换的。

Selection and pump diameter generally the same, but this valve is adjustable, with non-return function.

一般选型与泵的口径相同，而且此阀是可以调节的，配有止回功能。

Law, air-flow valve, smoke fire damper and toilet Zhini valve, fume hood, fume hood exhaust outlets and throat hoop, Strong water heater exhaust pipe, vacuum tubes, foam, Extrusion boards, cotton centrifuge tubes, plates, PEF board, geotextile fabric, such as perlite and HVAC insulation materials, while the United States and the ventilation fans and air ventilation fans of the Green Island Acting .

上海文运建筑材料有限公司成立与2005年，是国内合资企业，坐落于嘉定国际机电五金城内，生产经营各种中央空调铝合金进，出风口，散流器，防雨百叶，双层百叶，单层百叶，格栅回风口，风机百叶风口，可开式风口，圆形风管法拦，风量调节阀，防烟防火阀，卫生间止逆阀，油烟罩，油烟罩排气口，喉箍，热水器强排风管，吸尘管，泡沫板，挤塑板，离心棉管，板，PEF板，土工布，珍珠岩等暖通及保温材料等，同时美的换气扇以及绿岛风换气扇的代理。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了