The standard material of the Yoke Sleeve is Nodular Ni-resist D2 with over a 1150 degree(2100F) dissolution point in conformity with API Std. Specification.
	The body-bonnet bolts are manufactured in accordance with API Std. 600 specifications. The nuts also strictly conform with ANSI B1.1 The stud-bolt nuts, hexagonal, rigid and hot-forged, bear material notation as well as do the bolt nuts made according to ANSI B18.2.2
	The bonnet is integral or separate with yoke and is the same material as the body. The body-bonnet flange drilling is spot-faced to exactly meet stud bolt nuts. The back seat bushing in the bonnet guarantees that the packing can be replaced even when the valve is fully opened. The stem packing dimension of the stuffing box are in accordance with API specs.
	The heat-treated stems of one-piece construction insure adequate mechanical properties and surface hardness. Friction at the time of opening and shutting is reduced to a minimum friction to accurate machining and lapping. The round finished surface of the stem head helps to achieve point contact with the inside of the disc housing to eliminate friction.
	The shoulder seated type seatring is welded or screwed into body. The seatring is forged and heat-treated to deliver the best mechanical properties and required hardness. The difference in hardness between the seats and disc conforms to API Std. specs.
	The disc of our glove valves is a loose disc and can freely revolve around the stem. The revents friction and galling with the seating surface when the valve is shut. The disc is furnished with a conical seating surface that has been ground and lapped to a mirror finish. It is of one-piece construction, and forged and heat-treated to deliver the required mechanical properties and hardness.
The cast steel body is designed to insure a wall thickness which is greater at any point than the minimum specified by API Std. 600. Port and seat passage dimensions conform to ANSI B16.5 Pipe Fitting. The screw-in type seatring is standard to allow interchangeability. The standard body-bonnet joint is male-female, and the flange is round for all valves, Accurate machining insures perfect coaxiality of the valve ends and seatring in addition to exact perpendicularity of the body-bonnet flanges.

BILL OF MATERIAL

NO	NAME OF PART	ASTM SPECIFICATION
		STANDARD	HIGH TEMPERATURE SERVICE				LOW TEMPERATURE SERVICE
1	BODY	A216-WCB	A217-WC6	A217-WC9	A217-C5	A217-C12	A352-LCB
2	BONNET	A216-WCB	A217-WC6	A217-WC9	A217-C5	A217-C12	A352-LCB
3	DISC	A217-CA15	A217-WC6	A217-WC9	A217-C5	A217-C12	A352-LCB
4	BODY SEAT RING	A105+HARD FACE	A105+HARD FACE	A105+HARD FACE	A105+HARD FACE	A105+HARD FACE	A182-F304
5	STEM	A182 F6a	A182 F6a	A182 F6a	A182 F6a	A182 F6a	A182-F304
6	DISC GLAND	A217-CA15	A217-CA15	A217-CA15	A217-CA15	A217-CA15	A182-F304
7	BONNET BUSH	A276-410	A276-410	A276-410	A276-410	A276-410	A276-304
8	PACKING GLAND	A276-410	A276-410	A276-410	A276-410	A276-410	A276-304
9	GLAND FLANGE	A105	A105	A105	A105	A105	A105
10	YOKE SLEEVE	A439-D2C	A439-D2C	A439-D2C	A439-D2C	A439-D2C	A439-D2C
11	BONNET BOLT	A193-B7	A193-B7	A193-B16	A193-B16	A193-B7	A320-L7
12	BONNET NUT	A194-2H	A194-2H	A194-4	A194-4	A194-2H	A194-4
13	GLAND BOLT	A193-B7	A193-B7	A193-B7	A193-B7	A193-B7	A320-L7
14	GLAND NUT	A194-2H	A194-2H	A194-2H	A194-2H	A194-2H	A194-4
15	HANDLE NUT	STEEL	STEEL	STEEL	STEEL	STEEL	STEEL
16	SET SCREW	STEEL	STEEL	STEEL	STEEL	STEEL	STEEL
17	SLEEVE GLAND	STEEL	STEEL	STEEL	STEEL	STEEL	STEEL
19	HANDWHEEL	A395	A395	A395	A395	A395	A395
20	HINGE PIN	A276-410	A276-410	A276-410	A276-410	A276-410	A276-304
21	PACKING	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
22	GASKET	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
23	GREASE NIPPLE	STEEL	STEEL	STEEL	STEEL	STEEL	STEEL
24	LANTERN	A276-410	A276-410	A276-410	A276-410	A276-410	A276-304
29	BEARING	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
30	STOPPER	A283-D	A283-D	A283-D	A283-D	A283-D	A283-D
45	WASHER	STEEL	STEEL	STEEL	STEEL	STEEL	STEEL