ISO 9001认证的设计与制造质量管理体系
　　ISO 9001 Certified Design & Manufacturing Quality Program

　　美国斯毕尔公司的质量管理系统，在产品设计、开发和生产等环节的质量最优化上通过ISO9001严格要求的认证。从产品概念到最后交货的每个阶段，美国斯毕尔公司都以质量改进和用户满意作为工作中心。
　　Spears® Quality Management System is certified to the strict requirements of ISO 9001 for optimum control of product design, development, and production. Quality improvement and customer satisfaction are central to each stage of producing Spears® valves from conception through final delivery.

　　开发和试验
　　Development & Testing

　　美国斯毕尔公司产品的基础就是开发，试验，再试验。美国斯毕尔公司阀门的开发汲取设计阶段结构试验中已经证明是正确的经验。材料和结构设计综合计算机工程应力分析的相关结果，使每个阀门部件都具有最优化的结构和性能。为此，产品就需要对下列方面的性能检验进行无数次的试验，包括：形状大小的稳定性，密封性能，静水爆破压力，操作力矩，流量，真空应用适用性，以及循环压力分析等等。一旦在材料和结构设计阶段经过试验检验并通过认证，则阀门和部件的生产制造阶段通常进行的就是形状大小、性能和爆破压力检验试验。
　　The foundation of Spears® products is development, testing, and more testing. Spears® valve development combines proven experience with structural testing at the design level. Materials and design are correlated in computer engineering stress analysis to yield the optimum structure and function of each valve component. Resulting products are then subjected to numerous tests for performance validation of dimensional stability, sealing capability, hydrostatic burst pressure, operational torque, flow capacity, vacuum application suitability and cyclic pressure analysis. Once approved, production valves and components are routinely subjected to dimensional, functional and burst pressure verification tests.

　　所有美国斯毕尔公司球阀都经过空气试验以检验在制造过程中是否能够实现100%的密封性能。
　　All Spears® ball valves are air-tested for 100% verification of positive sealing during the manufacturing process.

　　静水爆破压力检验
　　Hydrostatic Burst Pressure Verification

　　根据美国材料实验协会ASTM D 1599的要求，对于每个批次的生产过程，都要对阀门进行抽样试验。阀门的抽样样品需要持续60~70秒钟承受相当于设计压力的3.2倍内部静水压力。
　　Representative valve samples are routinely subjected to an internal hydrostatic pressure of 3.2 times their designated pressure rating in a 60-70 second test per ASTM D 1599 during each production run.

　　真空应用
　　Vacuum Service

　　美国斯毕尔公司阀门都需要对其真空应用性能进行检验，看看是否能够在26英寸汞柱1英寸汞柱损失的真空环境下持续1个小时正常运行。对于采用弹性密封材料的阀座，如美国斯毕尔公司蝶阀或True Union（真正的管接头）止回阀，需要加注真空润滑剂，以防止在真空应用环境中阀座过度干燥。
　　Validation of Spears® valves rated for vacuum service is determined from 1-hour tests at 26 in.Hg vacuum with less than 1 in.Hg loss. A vacuum lubricant should be applied to elastomer-sealed valve seats, such as Spears® Butterfly Valve or True Union Ball Check Valve, to prevent the seat from drying out in vacuum service applications.

　　美国斯毕尔公司阀门创新
　　Spears® Valve Innovations

　　并不是所有塑料阀门都是相同的。美国斯毕尔公司阀门具有其竞争对手所没有的好几项特有的性能。下列是美国斯毕尔公司与传统阀门结构不同创新改进的部分例子。
　　Not all plastic valves are the same. Spears® valves incorporate several unique features not found in competitive products. The following are a few examples of Spears® innovative improvements to conventional valve designs.

　　这是所开发的很重要的安全特性，用于防止球阀阀杆损坏时出现管道流体的泄漏。阀杆设计制造以高强度为目标，并考虑特殊切点以防止事故泄漏。如果阀杆上方由于过大的力矩而断裂，其O形环仍然保持密封在维修或更换之前不受影响。
　　This important SAFETY FEATURE was developed to help prevent line fluids from leaking out in the event of ball valve stem damage. Engineered for high strength, the stem incorporates a special shear point to control accidental breakage. Over-torquing breaks occur above the stem O-ring leaving the seal intact until repair or replacement can be made.

　　美国斯毕尔公司坚固的锯齿螺纹部件
　　Spears® Heavy Buttress Thread Components

　　如果所处理的流体介质具有很高的内部静水压力，则坚固结实的锯齿螺纹就是最好的选择。与类似的球阀部件中通常所采用ACME类型螺纹以及传统的方形螺纹相比，锯齿螺纹具有更大的支撑面，加上带有一定斜角的后座，因此具有更大的止推支撑力。所有美国斯毕尔公司球阀的活接头螺母和密封支架都采用锯齿螺纹，以增加强度，提高处理高压流体的能力 - 这是塑料阀门行业最强的结构之一！
　　When it comes to handling the hydraulic force of high internal pressures, the brute strength of the buttress thread is clearly the best. Its broad bearing surface with an angular backing provide greater thrust support than conventional square-cut, ACME-type threads commonly used in similar ball valve components. All Spears® Ball Valve union nuts and seal carriers are designed with buttress threads for greater strength and pressure handling capabilities - one of the strongest in the plastic valve industry!

　　力矩小，磨损小的蝶阀阀座
　　Low Torque, Low Wear Butterfly Valve Seats

　　美国斯毕尔公司能提供最低操作力矩的蝶阀。只是当阀门关闭时，阀板和阀座才会发生密封接触，而在开启的全过程中，都是能够自由转动。这种独特的结构避免了传统衬垫类型阀座所出现的阀座变形、挤出和磨损等问题。这种独一无二的阀座和阀体联动装置结构也防止出现部件被流体冲出或被压力吹出等问题。
　　Spears® Butterfly Valves provide the lowest operating torque available. Sealing contact between disc and seat takes place only at the close of the valve, allowing free travel through the full range of opening. This unique design eliminates seat creep, extrusion and wear typical with conventional liner-type seats. Exclusive design interlocks seat and body to prevent washout or blowout.

　　流量平衡球体止回阀
　　Flow Balanced Ball Check Valves

　　不合理的球体止回阀结构会极大地限制流量，产生球体噪音，甚至导致球体反冲而重新打开已关闭的倒流！经过大量的结构试验，美国斯毕尔公司对True Union（真正的活接头）球体止回阀的内部流量性能进行合理的结构设计，优化了流量传输性能，消除了球体噪音。
　　Improper ball check valve design can significantly restrict flow, create ball-chatter and even result in reverse ball travel and open flow shutoff! As a result of extensive design testing, Spears® has engineered the internal flow characteristics of the True Union Ball Check Valve to optimize fluid transmission and virtually eliminate ball-chatter.

　　特别加固（SR）塑料内螺纹
　　Special Reinforced (SR) Female Plastic Threads

　　这种以获得专利权的特别加固（SR）结构对塑料内螺纹可靠性来说是最有意义的改进之一。不仅仅增加了加固环，这种独特的预压缩结构能够抵消常规锥形管道螺纹连接结构所会产生的膨胀力。在正常的安装过程中，径向压力也因此降低，也有利于避免了紧固过紧的情况。美国斯毕尔公司SR螺纹在许多采用316不锈钢加固的斯毕尔工业阀门中应用，以加强耐化学腐蚀的性能。美国斯毕尔公司SR内套管接头也有采用SR螺纹，以加快所有滑进承插接头类型阀门的连接过程（参阅美国斯毕尔公司Schedule 80样本和价格目录）。
　　This patented Special Reinforced (SR) design is one of the most significant improvements in female plastic thread reliability. Not just an added reinforcing ring, this unique pre-compression design compensates for expansion forces generated from normal tapered pipe thread joint make-up. Radial stress is neutralized in normal installations and contained in severe over tightening situations. Spears® SR Threads are available on a variety of Spears® industial valves using SS316 reinforcement for optimum chemical and corrosion resistance. Spears® SR Female Spigot Adapters are also available for quick conversion of any slip-socket style valve end connector (see Spears® Schedule 80 catalog and price sheets).