额定压力青铜、铸铁和球墨铸铁阀门

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闸阀，截止阀，角阀和止回阀型号编制体系 Gate, Globe, Angle and Check Valve Figure Number System
例子 Examples:
	1 连接方式 1 End	2 阀门类型 2 Type	3 压力 3 Pressure	4 详细特征 4 Detail-Features	5 阀板材料 5 Disc Material	6 其它 6 Misc.
T-113	T	1	1	3
F-617-O	F	6	1	7		O

编制方法 Key:
1 连接方式 1 End	2 阀门类型 2 Type	3 压力 3 Pressure	4 详细特征 4 Detail-Features			5 阀板材料 5 Disc Material	6 其它 6 Miscellaneous
			闸阀 Gate	截止阀 和角阀 Globe and Angle	止回阀 Check
F-法兰 F-Flanged MJ-机械连接 MJ-Mechanical Joint S-焊接 S-Solder T-螺纹 T-Threaded W-对夹 W-Wafer P-IPS推进 P-IPS Push-on PR-IPS推进带槽状限制器 PR-IPS Push-on w/Joint Restraint G-槽状 G-Grooved	1-闸阀-青铜 1-Gate-Bronze 2-截止阀-青铜 2-Globe-Bronze 3-角阀-青铜 3-Angle-Bronze 4-止回阀-青铜 4-Check-Bronze 6-闸阀-铸铁阀体 6-Gate-Iron Body 7-截止阀-铸铁阀体 7-Globe-Iron Body 8-角阀-铸铁阀体 8-Angle-Iron Body 9-止回阀-铸铁阀体 9-Check-Iron Body	1-125# SWP/200# CWP 2-125# SWP/200# CWP 3-150# SWP/300# or 285# CWP 5-200# SWP/400# CWP 6-250# SWP/500# CWP 7-300# SWP/600# CWP 8-250# CWP 9-300# CWP 0-175# WWP	1-SB, RS, Solid 2-SB, RS 3-SB, NRS, Solid 4-UB, RS, Solid 5-UB, RS, Split 6-UB, NRS, Solid 7-BB, RS, Solid 9-BB, NRS, Solid	1-SB, Int 5-UB, Int 6-UB, Ren 8-BB, Ren 9-BB, Ren Stop Check	1-Hor SW, SB, Int (Y-Pat) 6-UB, Ren 8-Hor, SW, BB, Ren 0-Vert Lift, Ren Silent Type	A-合金螺纹 A-Alloy Threads B-青铜 B-Bronze V-氟化橡胶® V-Viton® W-丁纳橡胶 W-Buna-N Y-特氟隆® Y-Teflon®	BHW-青铜手轮 BHW-Bronze Handwheel BP-英制并联 BP-British Parallel BT-英制锥管螺纹 BT-British Taper Threads B7-B7螺栓 B7-B7 Bolting C-铜喇叭口 C-Copper Flared D-排水 D-Drain GP-石墨填料 GP-Graphite Packing 13-3%镀镍阀体 13-3% Nickel Body GO-齿轮执行机构 GO-Gear Operator H-软管连接 H-Hose End HC-软管盖和链条 HC-Hose Cap and Chain K-十字手柄 K-Cross Handle L-封闭屏蔽 L-Lockshield L&W-杠杆和压铁 L&W-Lever and Weight L&S-杠杆和弹簧 L&S-Lever and Spring N-铸铁阀内件 N-Iron Trim O-OS&Y P-全塞阀板 P-Full Plug Disc RW-弹性楔形闸板 RW-Resilient Wedge SON-方形操作螺母 SON-Square Operating Nut SS-不锈钢阀内件 SS-Stainless Steel Trim T-实心T形手柄 T-Solid Tee Handle TP-特氟隆填料 TP-Teflon Packing X-氧气应用 X-Oxygen Service Z-旁路 Z-By-Pass

术语： Terms:
BB 螺栓阀盖 BB Bolted Bonnet Int 整体结构 Int Integral	CI 铸铁 CI Cast Iron MI 可锻铸铁 MI Malleable Iron NRS 暗杆阀杆 NRS Non-Rising Stem	POA 申请定价 POA Price on Application Ren 可更新的 Ren Renewable RS 明杆阀杆 RS Rising Stem	SB 螺纹旋进阀盖 SB Screw-in Bonnet UB 连接头阀盖 UB Union Bonnet FF 平面法兰 FF Flat Face Flanges

合金腐蚀，也就是所谓的“失锌现象”，在20世纪50年代已经从阀门产品中根除。但是，由于近来在美国国外生产的锻造或铸造阀门材料越来越多采用高锌合金（通常称为“黄铜”），因此“失锌现象”又开始有所回潮。 　　De-alloying corrosion, known as ”Dezincification,“ was effectively eradicated from valve products in the 1950s. Today, however, this problem has returned with the increased use of high-zinc alloys (commonly referred to as ‘Yellow Brass’) in forged and cast valves typically produced outside the United States. 　　失锌现象有选择地从合金中将锌排泄出去，使得材料变得多孔、铜含量过大，从而降低材料强度。使用中的阀门出现失锌想象时的物理特征包括：在外表面出现白色粉末或矿物污点。 　　Dezincification selectively removes zinc from the alloy, leaving behind a porous, copper-rich structure that has little mechanical strength. The physical attributes of an in-service valve with Dezincification includes a white powdery substance or mineral stains on its exterior surface. 　　如何解决这个问题？在所有青铜阀门的金属部件中，其水路部分的化学成分中锌的含量绝对不能超过15%。作为一种基本要求，美国尼伯科青铜消防阀门都具有“抗失锌”特性，质量更加优异，使用寿命更加长。 　　What’s the cure? On all bronze valves the metal components in the waterway must not contain more than 15% zinc in their chemical makeup. As a standard NIBCO bronze fire protection valves are made to be “Dezincification Resistant,” which is a seal of quality and longevity.

本编制方法只用于选型指导，并不能用于推论所将生产的任何阀门所包括的构成。 *Viton和Teflon是杜邦公司的注册商标。 This key is a guide only and is not intended to infer that any valve will be produced that is contained in the key. *Viton and Teflon are registered trademarks of DuPont.