进口缓开缓闭低水损止回阀 缓开快闭低压损逆止阀 美国RETZ瑞茨

　　品牌：RETZ瑞茨/美国，我们一直致力于流体控制领域的持续创新，始于2005……

　　性能：具有缓开，缓闭消除水锤、止回功能，可以取代止回阀，电动阀和水锤吸纳器

　　产品详情 Product details

　　1.快开(缓开)缓闭低损止回阀依靠导阀的作用，在水泵开启时缓慢开启。在运行过程中，因介质压力作用，阀门全开，控制腔与大气接通，接近零水损；在水泵停止时，缓慢关闭（快闭），防止水锤噪音等并止回。

　　The fast opening (slow opening) and slowclosing low loss check valve relies on the action of the pilot valve to slowlyopen when the water pump is started. During operation, due to the pressure ofthe medium, the valve is fully open and the control chamber is connected to theatmosphere, approaching zero water loss; When the water pump stops, slowlyclose (quickly close) to prevent water hammer noise and check it.

　　2.缓开缓闭型：水泵停止运动时，主阀分两级关闭，主阀瓣先快闭90%，小阀瓣再缓慢关闭（关闭速度可根据现场工况进行调节），消除水锤和噪音

　　Slow opening and slow closing type: Whenthe water pump stops moving, the main valve is closed in two stages. The mainvalve disc is quickly closed by 90% first, and the small valve disc is slowlyclosed (the closing speed can be adjusted according to on-site conditions) toeliminate water hammer and noise

　　3.缓闭快闭型：水泵停止运行时，主阀在0.5秒之内快速关闭，消除水锤和噪音

　　Slow closing and fast closing type: Whenthe water pump stops running, the main valve quickly closes within 0.5 secondsto eliminate water hammer and noise

　　进口缓开缓闭低水损止回阀产品特点 ProductFeatures

　　1.实现水泵闭阀启动功能：即在泵启动时，阀门处于关闭状态，当压力上升到设定值时，阀门缓慢开启，避免水泵空载启动产生过大电流冲击损坏电

　　To realize the starting function of thepump closed valve: that is, when the pump starts, the valve is in the closedstate, when the pressure rises to the set value, the valve is slowly open, toavoid the pump empty load start caused by excessive current impact damage ofthe motor.

　　2.阻力损失小，接近零水损：控制动作压力小于0.05Mpa，局部阻力系数小于1.0

　　Low resistance loss, close to zero waterloss: the control action pressure is less than 0.05Mpa, and the localresistance coefficient is less than 1.0

　　进口缓开缓闭低水损止回阀技术规范 Technical specifications

　　压力等级：PN10-PN25

　　隔膜式：DN50～DN300

　　公称压力：16BAR

　　阀体材质：碳钢、不锈钢

　　膜片Diaphragm：丁晴橡胶Nitrite-butadiene Rubber (NBR)

　　阀座Valve seat：碳素钢、不锈钢Carbon steel, Stainless steel