原文：
通径dn65以上的管线控制阀 蝶阀： 这类阀门应该是凸耳或国际管道标准i.p.s.管状连接端口阀体，并按照美国阀门和管件制造商标准化协会mss-sp67标准制造；通径dn50～dn300额定工作压力是200 psi非冲击冷水，dn350以上是150 psi。用于保温隔热绝缘的阀体具有2英寸的加长管径，材质是铸铁或球墨铸铁。蝶板材质是铝青铜合金，配置三元乙丙橡胶阀座和密封；或三元乙丙橡胶涂层蝶板，配置聚合物涂层阀体。阀杆应该是400系列不锈钢，不能将 阀杆暴露在蝶板紧固件上。通径dn65至dn150应该配置具有10个位置节流板的操作手柄；通径dn200以上的蝶阀应该配置齿轮操作机构。凸耳结构和管状结构蝶阀应该能够 用作隔断阀，而且不需要下游法兰也可以在全压力下用在管道终端。 可采用的阀门： 凸耳阀体，铝青铜蝶板的美国尼伯科ld2000-3蝶阀（手柄操作机构）；ld2000-5蝶阀（齿轮操作机构）；ld1000-5蝶阀（齿轮操作机构），通径dn350以上。 管状阀体，橡胶涂层蝶板的美国尼伯科gd4765-3蝶阀（手柄操作机构）；gd4765-5蝶阀（齿轮操作机构） 闸阀，截止阀/角阀： 这些阀门工作压力为125磅级，并按照 美国阀门与管件制造商标准化协会mss-sp70（闸阀）标准或mss-sp85（截止阀/角阀）标准制造，法兰连接，螺栓阀盖，os&y，铸铁阀体，青铜阀内件，阀体和阀盖材质符合美国材料试验协会astm a 126级别b标准铸铁，填料和衬垫不含石棉。 可采用的阀门： 美国尼伯科f-617-o闸阀 美国尼伯科f-718-b截止阀 美国尼伯科f-818-b角阀 止回阀： 通径dn65以上的止回阀应该采用旋启式结构，并按照美国阀门和管件制造商标准协会mss-sp71标准制造，125磅级，法兰连接，符合美国材料试验协会astm a 126级别b标准的铸铁阀体和青铜阀内件，不含石棉的衬垫。也可以采用平板式结构，配置不锈钢弹簧，青铜阀瓣，橡胶阀座，符合美国材料试验协会astm a 126级别b标准的或a 48标准的铸铁阀体，配置125磅级或150磅级法兰。弹簧执行机构止回阀用于管道排放。外置操作手柄和弹簧执行机构的旋启式止回阀用于污水坑、排污和雨水排泄管道。 可采用的阀门： 旋启式美国尼伯科f-918-b止回阀 弹簧执行机构平板式美国尼伯科w-920-w或kw-900-w止回阀，或外置手柄和弹簧的w-910-w旋启式止回阀，或配置重力拉杆的美国尼伯科f-918-bl&s或f-918-blw止回阀 流量平衡阀门： 用于热水和冷水管道系统的通径dn15至dn50流量平衡阀应该以美国尼伯科型号1710为基础，而通径dn50至dn300应该以美国尼伯科型号737为基础。通径dn15至dn50阀门的材质应该是抗失锌现象的黄铜或青铜。通径dn50至dn300阀门的材质是铸铁，配置美国国家标准化组织（ansi）125磅级/150磅级法兰或管状连接端口。对于需要xx调节和控制流量的场合，所采用的阀门应该是截止阀结构，压力－温度等级为121oc，175 psi时采用铸铁材质，压力－温度等级为121oc，240 psi时采用青铜材质。每个阀门应该配置两个测试端口，内置止回阀和保护阀盖。所有流量平衡阀均配置可视位置读数指示器，并内置操作位置记忆装置，用于重复调节和控制。 可采用的阀门 美国尼伯科t-1710流量平衡阀（螺纹）；s-1710流量平衡阀（焊接） 美国尼伯科f-737流量平衡阀（法兰）；g-737（管状）

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译文：
Path over the pipeline control valve dn65 Butterfly: Lug type valves should be standard or international pipeline ips tubular port body, and in accordance with U.S. valve and pipe fittings Manufacturers Standardization Society of mss-sp67 standard manufacturing; Path dn50 ~ dn300 rated working pressure is 200 psi non-shock cold water, dn350 above 150 psi. For insulating the body with 2-inch longer diameter, material is cast iron or ductile iron. Disc material is aluminum bronze alloy with EPDM rubber seat and seals; or EPDM rubber coated disc, configuration of polymer coating body. Stem shall be 400 series stainless steel, not exposed stem butterfly fasteners. Path dn65 to dn150 should be configured with 10 operating handle position throttling plate; over Butterfly Path dn200 should configure the gear operator. Lug butterfly valve structure and the tubular structure should be used as a cut off valve, and the need for downstream flanges can also be used in all pressure in the pipeline terminal. ACCEPTABLE VALVES: Lug body, aluminum bronze disc NIBCO ld2000-3 valve (lever operator); ld2000-5 Butterfly (gear operator); ld1000-5 Butterfly (gear operator), Path dn350 above. Tubular body, rubber-coated disc NIBCO gd4765-3 valve (lever operator); gd4765-5 Butterfly (gear operator) Gate valve, globe valve / angle valve: The valve working pressure of 125 pounds of grade, and in accordance with U.S. valve and pipe fittings Manufacturers Standardization Society of mss-sp70 (gate) standard or mss-sp85 (cut-off valve / angle valve) standard manufacturing, flanged, bolt valve cover, os & y, iron body, bronze trim, valve and valve cover can be made consistent with the United States Society for Testing and Materials astm a 126 grade b standard cast iron, non-asbestos packing and gasket. ACCEPTABLE VALVES: NIBCO valve f-617-o NIBCO f-718-b cut-off valve NIBCO f-818-b Angle Check Valve: Path over the check valve dn65 Swing structure should be used, and in accordance with U.S. manufacturers of valves and pipe fittings Standards Association mss-sp71 standard manufacture, 125-pound, flange connection, meet the American Society for Testing and Materials astm a 126-level b standard cast iron body and bronze trim, non-asbestos gasket. Plate-type structure can also be used, configuration of stainless steel spring, bronze disc, rubber seat, found the United States Association for Testing and Materials standards astm a 126 grade b or a 48 standard cast iron valve body, the configuration 125 pounds or 150 pound class flanges . Spring actuator valve for pipes. External operating handle and spring actuator swing check valves for sump, sewage and storm drain lines. ACCEPTABLE VALVES: Swing-type NIBCO valve f-918-b Spring actuator flat NIBCO w-920-w or kw-900-w check valve, or an external handle and spring w-910-w swing check valve, or configuration of gravity bar of the United States Nigeria Berkow f-918-bl & s or f-918-blw valve Flow balancing valves: Hot and cold water piping system for the Path to dn50 dn15 flow balancing valves should be based on the U.S. Figure 1710, while the diameter dn50 to dn300 NIBCO Model 737 should be based. Path to dn50 valve dn15 material should be resistant to the phenomenon of zinc brass or bronze. Path dn50 to dn300 material is cast iron valve, configured American National Standards Institute (ansi) 125 pound / 150-pound flange or tube connection port. The need for precise regulation and control flow of the occasion, the valve should be used in valve structure, the pressure - temperature rating for the 121oc, 175 psi cast iron material used, the pressure - temperature rating for the 121oc, 240 psi bronze material used. Each valve should be configured two test ports, built-in check valve and valve cover protection. Flow Control Valves are equipped with all the reading visual position indicator, and built-in memory devices operating position, for the repeated adjustment and control. The valve can be used NIBCO t-1710 Flow Control Valves (thread); s-1710 Flow Control Valves (welding) NIBCO f-737 Flow Control Valves (Flange); g-737 (Tube)