Flowseal Valves - How To Order - High Performance Butterfly Valves - AIV, Inc. Master Wholesale Distributor of Industrial Valves

Flowseal Valves - Figure Numbering System

1.	Size	Code
	2"	02
	2.5"	025
	3"	03
	3.5"	035
	4"	04
	to
	48"	48

2.	Body Class	Code
	150 PSI Max. Diff. Pressure	0
	ANSI 150	1
	ANSI 300	3
	ANSI 600	6

3.	Body Type	Code
	Wafer	W
	Lugged	L

4.	Shaft Design	Code
	Straight	A
	2"-24" ANSI 150 2"-12" ANSI 300 2"-8" ANSI 600
	Balanced	B
	30"-48" ANSI 150 14"-30" ANSI 300 10"-16" ANSI 600

5.	Body Material	Code
	Carbon Steel	1
	316 SS	2
	Monel	3
	Alloy 20	4
	Alum Bronze MIL-B-24480	5
	Alum Bronze B148 ASTM C958	8
	Hastelloy C	H
	Special	X

Note 1. Use of 316 SS shaft may lower shutoff differentials. Consult factory

6.	Disc Material	Code
	Alum Bronze/ENP B148 C958	0
	316 SS	2
	Monel	3
	Alloy 20	4
	Alum Bronze MIL-B-24480	5
	316 SS Nitrided	7
	Alum Bronze B148 ASTM C958	H
	316 SS/ENP	H
	Hastelloy C	H
	Hastelloy C/ENP	J
	Special	X

7.	Shaft Material	Code
	17-4PH SS	1
	316 SS (Note 1)	2
	Monel	3
	Alloy 20	4
	Inconel 718/750	6
	Ferralium A479	7
	Nitronic 50	0
	Hastelloy C	H
	Special	X

8.	Seat Material	Code
	TFE	T
	RTFE	R
	Polyethylene (UHMWPE)	L
	Fire-Flow (TFE & Metal)	F
	Fire-Flow (RTFE & Metal)	B
	Inconel	M
	300 SS	S
	Fire-Flow (TFE & Monel)	C
	Fire-Flow (TFE & Monel)	J
	Fire-Flow (RTFE & Hastelloy C)	H
	Fire-Flow (RTFE & Hastelloy C)	K
	Special	X

9.	Packing Material	Code
	TFE	T
	Graphite	G
	Fire-Flow	F
	Special	X

10.	Bearing Material	Code
	Glass Backed TFE	G
	316 SS Backed TFE	H
	Fire-Flow (Garfil & 316 SS)	F
	Stainless Steel Nitrided	S
	Bronze	B
	Monel	K
	Hastelloy C Backed TFE	J
	Special	X

11.	Actuator Type	Code
	Bare Shaft	B
	Ratchet Handle	H
	Ratchet handle w/Lock	L
	Throttle	T
	Worm Gear	3
	Pneumatic Double Acting	4
	Pneumatic, Spring Return, Fail Close	5
	Pneumatic, Spring Return, Fail Open	6
	Hydraulic	7
	Electric	8
	Other	X

12.	Special Feature	Code
	None	O
	Oxygen Service	A
	Bi-Directional	B
	Chlorine Service	C
	Dead-End Service	D
	Flat Face	F
	Mil-V-24624	M
	NACE Construction	N
	60 to 125 AARH Facing	S
	Vacuum Service	V
	Special Feature Further Description Required	X

13.	Series	Code
	* Factory Assigned

Example: 12 - 1WA -121TTG - 30G

Typical Specification

1.0 Scope

This specification covers the design and testing of high pressure and offset seat butterfly vlaves.

2.0 Applicable Standards

The following standards shall apply
ANSI B16.5: Pipe Flanges and Flanged Fittings (24" size and smaller).
ANSI B16.34: Valves-Flanged and Buttwelding End.
MSS SP-25: Standard Marking System for Valves, Fittings, Flnages and Unions.
MSS SP-61: Pressure Testing of Steel Valves.
MSS SP-68: High Pressure-Offset Seat Butterfly Valves.
API 609: Butterfly Valves, Lug-Type and Water-Type.

3.0 Design Requirement

3.1 Valves shall be High Performance Butterfly with offset seat and eccentric shaft. They shall be capable of sealing against full differential pressure in either flow direction.
3.2 Valve seat shall be both self and pressure energized with an elastometric core. The self energizing member shall be isolated from the line media.
3.3 Valves shall have retained top and bottom low friction bearings.
3.4 Shaft design shall be single or dual piece.
3.5 Retainer rings must be recessed in the body so that the line gasket prevents any potential external leakage.
3.6 Valves shall have internal stop to prevent disc over-travel.
3.7 Valves shall be Flowseal or approved equal.

4.0 Materials

4.1 Valves shall be constructed of new material.
4.2 Carbon steel valves shall be constructed from materal below:
4.2.1 Body-ASTM A105 or A216 Gr. WCB.
4.2.2 Disc-ASTM A182 F316 or A351 Gr. CF8M.
4.3 Stainless steel valves shall be constructed from materials below:
4.3.1 Body-ASTM A182 Gr. F316 or A351 Gr. CF8M.
4.3.2 Disc-ASTM A182 Gr. F316 or A351 Gr. CF8M.
4.4 Shafts shall be ASTM A564 type 630 H 1150 or 316 SS.

5.0 Inspection and Test

5.1 Valves shall be hydrostatically shell tested per ANSI B16.34 and MSS SP-61.
5.2 Valves shall be seat tested per MSS SP-61. No leakage is permitted for resilient seated valves.
5.3 API 598 testing available upon request.

Consult factory for ANSI Class 600 torque values.