Graha Valve

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Gate Valve Application

Gate valve are primary used for stop valves fully opened or fully closed. They are not normaly considered for throttling purpose, but more for slurries, viscous fluids, etc. Gate valves are characterized by a traveling wedge, which is moved with the operation of the stem nut. the wedge travels perpendicular to the direction of the flow.

Gate valves usually have a minimum pressure drop when fully open, provide tight shut-of when fully closed and remain relatively free of contamination buildup.

Manufacturing Standards

Body and Bonnet Conection

Standard body-bonnet joint of gate valve are connected by studs and nuts are machined as follows:

Standards Parts & Material

FORGED STEEL GATE VALVE

Manufacture : GLT

Specifications

Design to API 602

Bolted Bonned

Outside Screw & Yoke

Rising Stem

Non-Rising Handwheel

Regular & Full Port

Threaded and Socket Weld Ends

Manufacturing Standards

Standards Parts & Material

Note : Other valve material composition are available

Class 800

Dimensions

Working Pressure : Carbon Steel - 1975 p.s.i @ 100°F / 38°C

Class 1500

Dimensions

Working Pressure : Carbon Steel - 3705 p.s.i @ 100°F / 38°C

Class 150/ 300/ 600

Specifications

Design to API 602

Bolted Bonnet

Outside Screw & Yoke

Rising Stem

Non-Rising Handwheel

Regular Port

Flanged Ends

Manufacturing Standards

Standard Parts & Material

Note : Other Valve material composition are available

Dimensions

Working Pressure : Carbon Steel

Class 150 - 285 p.s.i @ 100°F / 38°C

Class 300 - 740 p.s.i @ 100°F / 38°C

Class 600 - 1480 p.s.i @ 100°F / 38°C
Valve Specifications

Gate Valve Application

Gate valve are primary used for stop valves fully opened or fully closed. They are not normaly considered for throttling purpose, but more for slurries, viscous fluids, etc. Gate valves are characterized by a traveling wedge, which is moved with the operation of the stem nut. the wedge travels perpendicular to the direction of the flow.

Gate valves usually have a minimum pressure drop when fully open, provide tight shut-of when fully closed and remain relatively free of contamination buildup.

Manufacturing Standards

Body and Bonnet Conection

Standard body-bonnet joint of gate valve are connected by studs and nuts are machined as follows:



Standards Parts & Material

CAST STEEL GATE VALVE

Manufacture : GLT

Specifications

Design to API 600

Bolted Bonnet

Outside Screw & Yoke

Rising Steem

Non-Rising Handwheel

Flexible Wedge

Class 150

Standard Parts & Material



Note : Other valve material composition are available

Dimensions

Working Pressure : Carbon Steel - 285 p.s.i @ 100°F / 38°C

Class 300

Standard Parts & Material



Note : Other valve material composition are available

Dimensions

Working Pressure : Carbon Steel - 740 p.s.i @ 100°F / 38°C

Class 600

Standard Parts & Material



Note : Other valve material composition are available

Dimensions

Working Pressure : Carbon Steel - 1480 p.s.i @ 100°F / 38°C

Class 900

Standards Parts & material



Note : Other valve material composition are available

Dimensions

Working Pressure : Carbon Steel - 2220 p.s.i @ 100°F / 38°C

Descriptions

Threaded BS 21(ISO/7) or ANSI/ASME B1.20.1

NON-RISING STEM.
SCREWED BONNET.
SOLID WEDGE DISC.
INTEGRAL SEAT.
ASBESTOS FREE (PTFE).

PRESSURE RATINGS
Working pressure	2.07MPa (300psi) Water & Oil non-shock
Suitable Media	Water , Oil

TESTING

Test pressure:

Shell 3.10MPa (450psi) Hydraulic
Seat 2.27MPa (330psi) Hydraulic
Seat 0.55MPa (80psi) Air

SPECIFICATION

Sizes 15mm (1/2") to 100mm (4").

MATERIALS
Part	Material	EN	ASTM
Body Bonnet Disc Stem Packing Packing Nut Gland Hand wheel	Bronze (Gunmetal) Bronze (Gunmetal) Bronze (Gunmetal) Brass Rod PTFE Brass Rod Brass Rod Cast Iron	1982-CC491K 1982-CC491K 1982-CC491K 12164 CW614N 12164 CW614N 12164 CW614N 1452 Gr.260	B62-C83600 B62-C83600 B62-C83600 B16-C36000 B16-C36000 B16-C36000 A48 No.35

DIMENSIONS AND WEIGHTS
Nominal Size		A		B		C		Weight
mm	inch	mm	inch	mm	inch	mm	inch	Kg	LB
15	1/2	43	1-11/16	76	3	53	2-1/16	0.31	0.68
20	3/4	50	1-15/16	87	3-7/16	57	2-1/4	0.43	0.95
25	1	53	2-1/16	100	3-15/16	72	2-13/16	0.66	1.46
32	1-1/4	62	2-7/16	119	4-11/16	78	3-1/16	0.83	1.83
40	1-1/2	64	2-1/2	135	5-5/16	78	3-1/16	1.08	2.38
50	2	72	2-13/16	152	6	97	3-13/16	1.60	3.53
65	2-1/2	89	3-1/2	187	7-3/8	108	4-1/4	2.75	6.06
80	3	101	4	215	8-7/16	126	4-15/16	4.48	9.88
100	4	116	4-9/16	245	9-5/8	178	7	7.43	16.38

Descriptions

Threaded BS 21(ISO/7) /ASME B1.20.1

NON-RISING STEM.
SCREWED BONNET.
SOLID WEDGE DISC. INTEGRAL SEAT.
ASBESTOS FREE (PTFE).

PRESSURE RATINGS
Working pressure	1.38MPa (200psi) Water & Oil non-shock
Suitable Media	Water , Oil

TESTING

Test pressure:

Shell 2.07MPa (300psi) Hydraulic
Seat 1.51MPa (220psi) Hydraulic
Seat 0.55MPa (80psi) Air

SPECIFICATION

Sizes 15mm (1/2") to 100mm (4").

MATERIALS
Part	Material	EN	ASTM
Body Bonnet Disc Stem Packing Packing Nut Gland Hand Wheel	Brass Brass Brass Brass Rod PTFE Brass Rod Brass Rod Cast Iron	12167 CW617N 12167 CW617N 12167 CW617N 12164 CW614N 12164 CW614N 12164 CW614N 1452 Gr.260	B124-C37700 B124-C37700 B124-C37700 B16-C36000 B16-C36000 B16-C36000 A48 No.35

DIMENSIONS AND WEIGHTS
Nominal Size		A		B		C		Weight
mm	inch	mm	inch	mm	inch	mm	inch	Kg	LB
15	1/2	43	1-11/16	76	3	53	2-1/16	0.30	0.65
20	3/4	50	1-15/16	87	3-7/16	57	2-1/4	0.40	0.88
25	1	53	2-1/16	100	3-15/16	72	2-13/16	0.63	1.39
32	1-1/4	62	2-7/16	119	4-11/16	78	3-1/16	0.80	1.76
40	1-1/2	64	2-1/2	135	5-5/16	78	3-1/16	1.04	2.29
50	2	72	2-13/16	152	6	97	3-13/16	1.51	3.33
65	2-1/2	89	3-1/2	187	7-3/8	108	4-1/4	2.77	6.10
80	3	101	4	215	8-7/16	126	4-15/16	4.20	9.25
100	4	116	4-9/16	245	9-5/8	178	7	7.30	16.08

Descriptions

SPECIFICATION

RISING STEM OUTSIDE SCREW AND YOKE
BS 5150 FLANGED TO BS 4504 PN16

PRESSURE / TEMPERATURE RATINGS

	DN50～300	DN350～600
Working Pressure	16 bar	10 bar
Testing Pressure	Shell : 24 bar Seat : 17.6 bar	Shell : 15 bar Seat : 11 bar
Working Temperature	10°C to 120°C
Suitable Media	Water, Oil & Gas

* 16 bar pressure rating is available for DN350~600. The body material shall be
Ductile Iron.

MATERIALS

Part	Material	BS
Body	Cast Iron	1452 Gr. 220
Bonnet	Cast Iron	1452 Gr. 220
Disc	Cast Iron	1452 Gr. 220
Seat Ring	Gunmetal	1400 LG 2
Stem	Brass Stainless Steel	2874 CZ 124 970 420S37
Packing	Graphite	Non-Asbestos
Handwheel	Cast Iron	1452 Gr. 220

DIMENSIONS

Size mm	L mm	H (Open) mm	D mm
50 65 80 100 125 150 200 250 300 350 400 450 500 600	178 190 203 229 254 267 292 330 356 381 406 432 457 508	349 391 454 562 660 781 930 1184 1391 1595 1900 2210 2490 2960	190 190 190 300 300 350 350 400 450 508 558 610 610 762

Descriptions

SPECIFICATION

NON-RISING STEM INSIDE SCREW
BS 5150 FLANGED TO BS 4504 PN16

PRESSURE / TEMPERATURE RATINGS

	DN50~300	DN350~600
Working Pressure	16 bar	10 bar
Testing Pressure	Shell : 24 bar Seat : 17.6 bar	Shell : 15 bar Seat : 11 bar
Working Temperature	10°C to 120°C
Suitable Media	Water, Oil & Gas

* 16 bar pressure rating is available for DN350~600. The body material shall be Ductile Iron.

MATERIALS

Part	Material	DIN
Body	Cast Iron	1452 Gr. 220
Bonnet	Cast Iron	1452 Gr. 220
Disc	Cast Iron	1452 Gr. 220
Seat Ring	Gunmetal	1400 LG 2
Stem	Brass Stainless Steel	2874 CZ 124 970 420S37
Packing	Graphite	Non-Asbestos
Handwheel	Cast Iron	1452 Gr. 220

DIMENSIONS

Size mm	L mm	H(Open) mm	D mm
50 65 80 100 125 150 200 250 300 350 400 450 500 600	178 190 203 229 254 267 292 330 356 381 406 432 457 508	280 318 333 387 453 502 635 735 875 1015 1120 1210 1250 1390	190 190 190 300 300 350 350 400 450 508 558 610 610 762

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