AAP Industries 4087 PN21 Plate Flat Faced Flange Flanges and Gaskets

4087 PN21 Plate Flat Faced Flange
AAP CODE	IMPERIAL SIZE	A	B	C	D	BOLT SIZE	NUMBER HOLES	APPROX. KG/PC
4087SPN2194	4	230	191	19	18	M16	8	4.32
4087SPN2196	6	305	260	24	22	M20	12	8.60
4087SPN2198	8	370	324	24	22	M20	12	12.14
4087SPN21X25	10	430	381	30	26	M24	12	18.58
4087SPN21X30	12	490	438	38	26	M24	16	22.68
4087SPN21X40	16	610	552	38	30	M27	20	43.50
4087SPN21X45	18	675	610	38	33	M30	20	51.70
4087SPN21X50	20	735	673	48	33	M30	24	74.25
4087SPN21X60	24	850	781	58	36	M33	24	111.54
4087SPN21X75	30	1015	940	58	36	M33	28	116.73
4087SPN21X90	36	1185	1105	68	39	M36	32	209.58
4087SPN21X120	48	1530	1441	88	42	M39	40	532.82

[4] FLANGES

Specifications

SPECIFICATIONS:

ANSI B16.5 - Pipe Flanges and Flanged Fittings (American)

AS2129 - Flanges for Pipes, Valves and Fittings (Australian)

BS4504 - Circular Flanges for Pipe, Valves and Fittings (PN designated) - (now BS EN1092) (European)

AS4087 - Metallic Flanges for Waterworks Purposes (Australian)

BS10 - Specification for Flanges and bolting for Pipes, Valves and Fittings (British)

**AS2129 is a replica of BS10 but is stated in mm rather than inches. In some sizes bolt holes are slightly larger to give

better clearance

APPLICATION: Water Supply, Oil, Gas, Petrochemical, Irrigation, Fire Services, General Industry, Construction.

MARKING: All Flanges when possible will display a heat number, size, table, grade and dimensional standard

PLATE STEEL FLANGES: Plate flanges are mainly used for light duty, lower pressure or non-critical applications, commonly

referring to AS2129, BS10 or AS4087 standards. The manufacturing method involves cutting and machining from plate steel

FORGED STEEL FLANGES: Forged Steel flanges are commonly used and specified in the Oil, Gas, Petrochemical and

mining sectors, where pressure, temperature and safety considerations often specify the ANSI B16.5, ASME B16.47 or

BS4504 standards. The manufacturing method involves the hot forging of suitable steels prior to final machining

MATERIALS

Mild Carbon Steel

ASTM A105

ASTM A182 316L

AAP CAN ALSO OFFER A WIDE RANGE OF PRODUCTS ON REQUEST WHICH INCLUDE

BS4504 (DIN) flanges from PN6 TO PN40

Dimension Tolerance for ANSI B16.5
Threaded, Socket Welding. Slip-On, Lap Joint and Blind			Weld Neck
Outside Diameter of Hub	≤ 24	± 1/16	Outside Diameter	≤ 24	± 1/16
			Inside Diameter	≤ 10	± 1/32
Inside Diameter	Threaded	Within limits of boring gauge
				12 through 18	± 1/16
				≥ 20	+1/8, - 1/16
	Socket Weld, Slip on	≤10, + 1/32, -0 ≥12 + 1/16, -0
			Diameter of Contact Face	1/16 Raised Face	± 1/32
Outside Diameter of Hub	≤ 12	+ 3/32 - 1/16		1/4 Raised face tongue & Groove male, female	± 1/64
	≥14	± 1/8
			Diameter of Hub at Base	≤24	± 1/16
Diameter of Contact Face	1/16 Raised Face	± 1/32
				> 24	± 1/8
	1/4 Raised face tongue & Groove male, female	± 1/64
			Diameter Of Hub at Point Of Welding	NPS ≤5	+ 3/32 -1/32
Drilling	Bolt Circle	± 1/16		NPS ≥6	+ 5/32 -1/32
	Bolt Hole Spacing	± 1/32
			Drilling	Bolt Circle	± 1/16
	Concentricity of bolt circle	NPS ≤ 2 1/2 1/32 max
				Bolt Hole Spacing	± 1/32
		NPS ≥ 3		Concentricity	NPS ≤ 2 1/2
		1/16 max		of bolt circle	1/32 max
Thickness	≤ 18	+ 1/8, -0			NPS ≥ 3 1/16 max
	≥ 20	+3/16, -0
			Thickness	≤ 18	+1/8 -0
Length through the Hub	≤ 18	+1/8, -1/32
	≥ 20	+3/16, -1/16
				≥ 20	+3/16 -0
			Length through the Hub	NPS ≤ 4	± 1/16
				5 ≤ NPS ≤10	+1/16 -1/8
				NPS ≥ 12	+ 1/8 -3/16

FLANGES [4]

“FLANGES ABOVE DN 600 ARE NOT INCLUDED IN ANSI B16.5 STANDARD AND THE CLASS DESIGNATIONS IN THESE

LARGE DIAMETERS DO NOT IMPLY SPECIFIC TEMPERATURE/PRESSURE RATINGS”

NOTE 1 — For each reduction of 0.01% below the specified carbon maximum (0.35%), an increase of 0.06% manganese

above the specified maximum (1.05%) will be permitted up to a maximum of 1.35%.

c Determined by either the 0.2% off-set method or the 0.5% extension-under-load method.

Temperature / Pressure Ratings ASTM A105
CARBON STEEL PIPE FLANGES TO ANSI B16.5 (BS.1560)
FORGINGS TO ASTM A105 — Not recommended for prolonged use above 427°C FORGINGS TO ASTM A350-LF2 — Not to be used above 343°C”
“TEMPERA- TURE IN °C”	MAXIMUM WORKING PRESSURE IN kPa BY PN (Pressure Numbers)
	PN20	PN50	PN100	PN150	PN250	PN420
	CLASS 150	CLASS 300	CLASS 600	CLASS 900	CLASS 1500	CLASS 2500
-29 to 38	1960	5110	10210	15320	25530	42550
50	1920	5010	10020	15020	25040	41730
100	1770	4640	9280	13910	23190	38650
150	1580	4520	9050	13570	22610	37690
200	1400	4380	8760	13150	21910	36520
250	1210	4170	8340	12520	20860	34770
300	1020	3870	7750	11620	19370	32280
350	840	3700	7390	11090	18480	30800
375	740	3650	7290	10940	18230	30390
400	650	3450	6900	10350	17250	28750
425	560	2880	5750	8630	14380	23960
450	470	2000	4010	6010	10020	16690
475	370	1350	2710	4060	6770	11290
500	280	880	1760	2640	4400	7330
525	190	520	1040	1550	2590	4320
540	130	330	650	980	1630	2720

CHEMICAL PROPERTIES
CARBON	MANGANESE	PHOSPHORUS	SULFAR	SILICON
.35% max	.60 - 1.05%	.040% max	.050% max	0.35%

MECHANICAL PROPERTIES
TENSILE STRENGTH min, Mpa	YIELD STRENGTH min , Mpa	ELONGATION IN 50mm, min%	REDUCTION OF AREA, min %	HARDNESS, HB max
485	250	22	30	187

Classification and Allowable Pressures
PRESSURE CLASS	ALLOWABLE OPERATIN PRESSURE kPa	G MAXIMUM OPERATING PRESSURE kPa	ALLOWABLE SITE TEST PRESSURE kPa
PN16	1600	1920	2000
PN21	2100	2520	2625
PN35	3500	4200	4375

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Irrigation Unit Conversions

Convert a given value and unit to different unit type. Conversions are available for flow rate, area, distance, time, volume, pressure, power, precipitation, salinity, and speed.

Click here to see unit descriptions.

Flow Rate:
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Area:
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Distance:
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Time:
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Volume:
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Pressure:
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Power:
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Precipitation (Water Application) Rate:
		to

Salinity:
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Speed:
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Reference: Washington State University

AAP Industries 4087 PN21 Plate Flat Faced Flange