Gate Valves

A gate valve is essentially utilised for one of two purposes – to totally block the flow of a fluid or allow a fluid to flow completely in a pipeline. Thus, gate valves are used only in the fully open or fully closed positions. These devices consist of a stem or shaft, which can be rotated through a spindle. The gate, which is fastened by threads, opens up when the shaft is rotated, allowing fluids to pass through it. Conversely, the gate may be closed to obstruct fluid flow, as required. The shaft needs to be rotated at more than 360 degrees for the gate to open completely. Gate valves lend themselves best to the pipeline industry, where the direction of fluid is not constant. This is because valves permit dual-way flowing of fluids, so they can be easily manipulated to block or allow fluid flow based on specific requirements.

Brosco manufactures superior-quality gate valves that can be handled easily, without requiring a technical background.

Gate Valves | Casting

Gate valve casting ensures that fluids flow only in the desired direction. Steel gate valve castings are used for water, air, oil, gas, steam, and non-acidic fluids and are important to prevent backflow. Basically, molten metal – such as bronze, stainless steel, or bronze – is poured into a mould, which is typically designed from ceramic, sand, or investment casting materials.

Product Details

Manufacturing Range
Specific Features

1) Size: 2″ NB to 16″ NB
2) Class: 150#, 300#, 600#
3) Materials: WCB, LCB, CF8, CF8M, CF3, CF3M

• Swing Type Disc
• Suitable for the horizontal & vertical pipe runs.
• Bolted Cover.
• All parts are accessible from the top for easy servicing.
• Hard faced (Stellite-6) seating surfaces also available.
• The design offers a low-pressure drop operation,
which makes the valve more energy efficient.

P. NO	ITEM	QTY.	MATERIAL
1	BODY	1	C.S. ASTM A 216 Gr. WCB
			C.I. TO IS 210 Gr. FG 220
			ASTM A 351 CF8/CF8M/CN7M
2	SEAT RING	2	C.S. ASTM A 216 Gr. WCB
			AISI 304/AISI 316/AISI 410
3	WEDGE	1	C.S. WITH 13% Cr. FACING
			AISI 304/AISI 316
4	SPINDLE	1	AISI 410/AISI 304/AISI 316
5	BONNET	1	C.S. ASTM A 216 Gr. WCB
			C.I. TO IS 210 Gr. FG 220
			ASTM A 351 CF8/CF8M/CN7M
6	GASKET	1	SPRIAL WOUND METALIC GASKET
7	BONNET STUD & NUT	Req	ASTM A 193 Gr. B7
			ASTM A 194 Gr. 2H
8	BONNET BUSH	1	AISI 410/AISI 304/AISI 316
9	GLAND PACKING	6 MIN.	METAUC WIRE REINFORCED
			ASBESTOS/GRAPHOIL
10	GLAND	1	C.S. ASTM A 216 Gr. WCB
11	YOKE BUSH	1	G.M./AISI 304
12	CROSS BOLT/NUT	2	CARBON STEEL
13	EYE BOLT/NUT	2	CARBON STEEL
14	GREASE NIPPLE	1	CARBON STEEL
15	GRUB SCREW	1	CARBON STEEL
16	HAND WHEEL	1	C.I./C.S.
17	HAND WHEEL NUT	1	CARBON STEEL

Standards :

1	2
Design Standard	API 600 / ASME B16.34
Inspection & Testing Standard	API 598
Face to Face	ASME B16.10
Flange Connection	ASME B16.5
Butt Weld Connection	ASME B16.25
Pressure Temperature Rating	PASME B16.34

ASA - 150
SIZE NB	A	?B	C	?D	E	F	?G	?J
25	127	51	14	108	4	79	16	123
40	165	73	14	127	4	98	16	152
50	178	92	16	152	4	121	19	203
65	190	105	17	178	4	140	19	203
80	203	127	19	190	4	152	19	254
100	229	157	24	229	8	190	19	305
125	254	186	24	254	8	216	22	305
150	267	216	25	278	8	241	22	356
200	292	270	29	343	8	298	22	356
250	330	324	30	406	12	362	25	406
300	356	381	32	483	12	431	25	457
350	381	413	35	534	12	477	29	508
400	406	470	37	597	16	540	29	508

ASA - 600
SIZE NB	A	?B	C	?D	E	F	?G	?J
40	241	73	22	156	4	114	22	250
50	292	92	25	165	8	127	19	300
65	330	105	28	190	8	149	22	300
80	356	127	32	210	8	168	22	405
100	432	157	38	273	8	216	25	490
125	508	186	44	330	8	267	29	490
150	559	216	48	356	12	292	29	610
200	660	270	56	419	12	349	32	675
250	787	324	64	508	16	432	35	825
300	838	381	67	559	16	489	35	825
350	889	413	70	600	20	527	38	825
400	991	470	76	686	20	603	41	1000

ASA - 300
SIZE NB	A	?B	C	?D	E	F	?G	?J
40	191	73	21	156	4	114	22	152
50	216	92	22	165	8	127	22	203
65	241	105	25	190	8	149	22	203
80	282	127	29	209	8	168	22	254
100	305	157	32	254	8	200	22	305
125	381	186	35	279	8	235	22	356
150	403	216	37	318	12	270	22	356
200	419	270	41	381	12	330	25	406
250	457	324	48	445	16	387	29	457
300	502	381	51	521	16	451	32	508
350	762	413	54	585	20	515	32	508
400	838	470	58	648	20	572	35	508

Gate Valves | Forging

Forging is a technique used to shape metals and alloys when they are solid. This process is used to design forged gate valves. Here, all the valve parts are forged to create sturdy, resistant, heavy-duty valves that last long and fulfill their intended functions effectively.

Product Details

Manufacturing Range
Specific Features

1) Size: ¼” NB to 2″ NB
2) Class: 800#, 1500#
3) Materials: A105, LF2, F5, F11,A182 (F304 / F316)

OS & Y Type Rising Stem
Hardened Stem.
Threaded and seal welded bonnet
Safer & Tighten stem seal.
Renewable Seat Ring & Back Seat arrangement Design.
Fully guided wedge reduce wear on seating surfaces.
Hard faced (Stellite-6) seating surfaces also available.
Two piece self-aligning packing gland

P. NO.	ITEM	QTY.	MATERIAL.
1	BODY	1	A 105
			A 182 (F 304)
			A 182 (F 316)
2	WEDGE	1	AISI 410/AISI 304/AISI 316
			AISI 410/AISI 304/AISI 316
4	STEM	1	AISI 410/AISI 304/AISI 316
			SPIRAL WOUND S.S. 304 WITH CAF FILLER
6	BONNET	1	A 105
			A 182 (F 304)
			A 182 (F 316)
			ASTM A 193 Gr. B7
			ASTM A 194 Gr. 2H
8	CAP HEAD SCREW	2	CARBON STEEL
			CARBON STEEL
10	EYE BOLTS/NUTS	2	CARBON STEEL
11	GLAND PACKING	6 MIN.	ASBESTOS GRAPHITED WITH
			INCONEL WIRE
12	GLAND BUSH	1	AISI 410/AISI 304/AISI 316
13	GLAND PLATE	1	CARBON STEEL
14	YOKE SLEEVE	1	AISI 304/AISI 316/EN 19
15	HAND WHEEL	1	MALLEABLE IRON
16	HAND WHEEL NUT	1	CARBON STEEL
16	HAND WHEEL	1	C.I./C.S.

Standards :

1	2
Design Standard	API 602
Inspection & Testing Standard	API 598 / BS 6755 Part 1
Socket Weld End	ASME B16.11
Screwed End	ASME B20.1
Butt Weld Connection	ASME B16.25
Pressure Temperature Rating	ASME B16.3

ASA - 800
SIZE NB	A	J	C	B
15 MM	73	86	151	135
20 MM	80	86	157	137
25 MM	100	116	186	162
40 MM	120	150	237	201
50 MM	130	150	268	223

ASA - 1500
SIZE NB	A	J	C	B
15 MM	80	86	151	138
20 MM	100	116	178	162
25 MM	120	150	227	207
40 MM	130	150	256	224
50 MM	140	225	303	263

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