AWWA Standard flange

AWWA Flange Standards differ from ANSI (American National Standards Institute) and ASME (American Society of Mechanical Engineers) certifications in a variety of ways, the most important being their specificity: AWWA standards evaluate properties that particularly affect potable water use, as opposed to broader industrial flange applications.

AWWA FlangeCharts and Drawings

这些公差是ANSI B16.5和AWWA C207-01秒的一部分。4.2除非另有说明。

Our company provides an array of AWWA flanges to meet your application's specifications.

一般信息

American Water Works Association (AWWA) is an international non-profit, scientific and educational association founded to improve water quality and supply. Established in 1881, it has a membership (as of 2012) of around 50,000 members worldwide.

Dimensional tolerances

环型滑动和盲法兰			集线器型滑动
O.D.	<= 24英寸	+/- 0.6"(1.6mm)	O.D.	<= 24英寸	+/- 0.6"(1.6mm)
	> 24英寸	+/- .12“（3.2mm）		> 24英寸	+/- .12“（3.2mm）
ID。	Socket-Welding	10英寸和Samller +.03“（0.8mm），-0”	ID。	10英寸和Samller	+.03"(0.8mm)
	Slip-on and 搭接接头	12" and Larger +.06"(1.6mm),-0"		12"-18"	+/-.06"(1.6mm)
				20"-42"	+.12“（3.2mm） +.06“（1.6mm）
O.D.集线器	<= 12“	+.09“（2.4mm）， -.06“（1.6mm）	直径的接触脸	0.06" Raised Face	+/-。03“（0.8mm）
	14"-42"	+/-。12英寸（3.2mm）
接触脸的直径	0.06" Raised Face	+/- .03"(0.8mm)	基部集线直径	x <= 24“	+/-.06"(1.6mm)
				x> 24“	+/-。12英寸（3.2mm）
Deameter of Contact face	<= 10“	+.03“（0.8mm）， -0"	焊接点的集线器直径	<= 5“	+.09“（2.4mm）， -.03"(0.8mm)
	12“ -42”	+.06"(1.6mm), -0"		>=6"	+.16"(4.0mm), -.03"(0.8mm)
钻孔	Bolt Circle	¹/₂“ -24” /26"-42"	钻孔	Bolt Circle	¹/₂“ -24” /26"-42"
		+/-.06"(1.6mm) +/-。06“			+/-.06"(1.6mm) +/-。06“
	螺栓孔间距	+/-。03“（0.8mm）		螺栓孔间距	+/-。03“（0.8mm）
	Eccentricity of Bolt circle with respect to bore	.03" Max. （0.8mm）		Eccentricity of Bolt circle with respect to bore	.03" Max. （0.8mm）
厚度	18"& Small	+.12"(3.2mm),-0"	厚度	18"& Small	+.12"(3.2mm),-0"
	20"-42"	+.19"(1.6mm)		20"-42"	+.19"(1.6mm)
长长的枢纽	<= 10“	+/-.06"(1.6mm)	长长的枢纽	<= 10“	+/-.06"(1.6mm)
	12“ -42”	+/1.12"(3.2mm)		12“ -42”	+/1.12"(3.2mm)

这些公差是ANSI B16.5和AWWA C207-01秒的一部分。4.2除非另有说明。给出的极限是最大的。严格的检查程序可确保在常规日常生产中维持高准确性的高标准。

AWWA Vs. ANSI Flange Standards

Both the AWWA and ANSI have thorough standards for flanges, and the two standards are different in several ways. AWWA standards provide flange properties intended for potable water use only. In contrast, ANSI standards are aimed at industrial flange applications.

笔记：

每个客户规格都有过多的或对抗的环法兰。
Bolt holes shall be drilled 1/8th inch larger in diameter than the nominal diameter of the bolt, except for flanges larger than 84 inch in diameter which shall be drilled 3/16th inch larger than the nominal diameter of the bolt.
Drilling same as ANSI/ASME B16.1 125 lb and B16.5 150 lb pattern.
Flanges available overdrilled to accommodate insulators.
AWWA recommends the use of dished head assemblies as alternate to blind flanges, sizes over 72" nominal.
AWWA C207-01 Class B and D Hub Flanges are identical to Industry Standard Class 125 Light Weight Flanges.