进口先导膜片式蒸汽减压阀 美国RETZ瑞茨

　　RETZ工业/美国瑞茨，我们一直致力于流体控制和测控领域的持续创新，始于2005……

　　(空气)进口蒸汽减压阀为铸钢材质阀体、主阀阀芯、导阀阀芯、阀座、及过滤网等均为不锈钢材质。适用于蒸汽和压缩空气系统。压力调节比可达10:1，控制准确Retz The (air)imported steam pressure reducing valve body is made of cast steel material, themain valve core, guide valve core, valve seat, and filter screen are all madeof stainless steel material. Suitable for steam and compressed air systems. Thepressure regulation ratio can reach 10:1, with accurate control

　　进口蒸汽减压阀产品详情

　　主要技术参数及性能 Maintechnical parameters and performance

　　启动前正常的位置是主阀关闭，而导阀则由弹簧作用力打开.蒸汽由导阀经压力控制管进入主阀隔膜室，部分蒸汽则由控制孔流向下游.施加在主阀隔膜上的控制压力增大，打开主阀 RETZ The normal position before startup isthat the main valve is closed, while the pilot valve is opened by the springforce. The steam enters the main valve diaphragm chamber through the pressurecontrol pipe from the pilot valve, and part of the steam flows downstreamthrough the control hole. The control pressure applied to the main valvediaphragm increases, and the main valve is opened

　　随着蒸汽流过主阀.下游压力上升，并由下游压力感应管反馈作用在导阀隔膜的下部（为了确保下游压力的稳定，应安装下游压力感应管），该作用力使导阀逐渐节流关小，与隔膜上部的弹簧作用力相平衡，从而维持主阀隔膜室内的压力，控制主阀的开度，输送适量的蒸汽，维持下游稳定的压力.当下游压力上升时，反馈压力增大，导阀关闭，主隔膜室的压力从控制孔释放，使主阀紧密关闭 RETZAs the steam flows through the main valve The downstream pressure rises and isfed back to the lower part of the diaphragm of the pilot valve by thedownstream pressure sensing pipe (in order to ensure the stability of thedownstream pressure, the downstream pressure sensing pipe shall be installed).This force causes the pilot valve to gradually throttle and close down, whichis balanced with the spring force on the upper part of the diaphragm, so as tomaintain the pressure in the diaphragm chamber of the main valve, control theopening of the main valve, deliver an appropriate amount of steam, and maintainthe stable downstream pressure When the downstream pressure rises, the feedbackpressure increases, the pilot valve closes, and the pressure of the maindiaphragm chamber is released from the control hole to close the main valvetightly

　　下游任何的负载变化或压力的波动，都会反馈在导阀隔膜的下方，从而调节主阀的开度，确保下游压力的准确稳定 Anyload change or pressure fluctuation in the downstream will be fed back to thelower part of the pilot valve diaphragm, so as to adjust the opening of themain valve and ensure the accuracy and stability of the downstream pressure

　　性能特点∶Performance characteristics

　　无需外部动力，减少安装费用 Noexternal power is required to reduce installation costs

　　准确控制制程压力，改善制程效率，提高产品质量Accurately control the process pressure, improve the process efficiency andimprove the product quality

　　多种控制的组合，减少总的设备投资 Combination of multiple controls to reducetotal equipment investment

　　本质安全，可用于危险区域 Intrinsically safe for use in hazardous areas

　　饱和蒸汽 Saturated steam

　　例；蒸汽流量为600kg/h，压力从6bar减至4bar。在表中找到上游压力为6bar的曲线和下游压力为4bar的交点，从该点垂直身下，找到所有系列口径的容量。在该列中DN32的阀是能满足要求的最小口径阀 Example; Thesteam flow is 600kg / h and the pressure is reduced from 6bar to 4bar. In thetable, find the intersection of the curve with the upstream pressure of 6 barand the curve with the downstream pressure of 4 bar. From this point, find thecapacity of all series of calibers. In this column, DN32 valve is the minimumdiameter valve that can meet the requirements

　　过热蒸汽Superheated steam

　　由于过热蒸汽比容较大，图中给出的值应乘以修正系数，若过热度为55℃，则修正系数为0.95，若过热度为100℃，修正系数为0.9，用于上述例子，若蒸汽过热度为55℃，则DN32口径的减压阀流通能力为740X0.95=703kg/h，仍能满足600kg/h的负载要求，则DN32 的阀仍适用 Since thespecific capacity of superheated steam is large, the value given in the figureshould be multiplied by the correction factor. If the superheat is 55 ℃, thecorrection factor is 0.95; if the superheat is 100 ℃, the correction factor is0.9. For the above example, if the superheat is 55 ℃, the flow capacity of theDN32 pressure reducing valve is 740x0.95 = 703kg / h, which can still meet theload requirement of 600kg / h, then the DN32 valve is still applicable

　　进口蒸汽减压阀性能参数

　　螺纹连接:1/2"-2" BSP NPT

　　法兰连接: DN15-250

　　执行标准: BS16/25 GB16/25 DIN16/25 JIS16/25 ANSI 150

　　阀体承压:PN16-40

　　工作温度: 蒸汽 285℃、空气 120℃

　　压力控制范围Pressure control range

　　0.2~3.0bar g 黄色弹簧

　　2.5~7.0barg 蓝色弹簧

　　6.0~12.0barg红色弹簧

　　0.2~17barg锥形弹簧

　　6.0~24.0bar g 灰色弹簧