Check Valves

If a fluid gets contaminated while flowing in its channel, backflow of this fluid can contaminate its source. For this reason, backflow of fluids should be prevented to avoid contamination. Check valves are specifically designed to allow fluids to pass only in one direction, so that there is no backflow in an industrial system. Two-way check valves are the most commonly used types of check valves in industries. In some cases, check valves having vents are used as three-way check valves, which protect fresh fluid supply at the source from getting contaminated in case a backflow of contaminated water takes place. These devices have atmospheric vents, which redirect contaminated water to a designated drain. Check valves are available in different sizes and shapes – the ideal shape and size of check valves to be used depends on the requirement.

Check valves manufactured by Brosco prevent backflow successfully and are resistant to high pressure and temperatures.

Check Valves | Casting

Steel-cast check valves are used to control the flow of liquid, ensuring that they flow in the same direction. This way, back flow of the fluid is easily prevented. Cast steel check valves are used in industries such as pharmaceuticals, gas and diesel circuits, and oil.

We offer premium steel-cast check valves to prevent backflow and ensure resilience to high temperatures and pressures.

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	ASTM A 216 Gr. WCB
			C.I. TO IS 210 Gr. FG 220
			ASTM A 351 Gr.CF8/CF8M/CN7M
2	COVER PLATE	1	ASTM A 216 Gr. WCB
			C.I. TO IS 210 Gr. FG 220
			ASTM A 351 Gr.CF8/CF8M/CN7M
3	DISC	1	C.S. WITH 13% Cr. FACING
			S.S.316/S.S.304
			TEFLON COATING OPTION
5	SEAT RING	1	C.S. WITH 13% Cr. FACING
			Integral Seat For Alloy Steel Valve
			AISI 304/AISI 316
5	DISC HINGE	1	ASTM A 216 Gr. WCB
			C.I. TO IS 210 Gr. FG 220
			ASTM A 351 Gr.CF8/CF8M/CN7M
6	STUD & NUT	Req.	ASTM A 193 Gr. B7
			ASTM A 194 Gr. 2H
7	COVER GASKET	1	SPIRAL WOUND SS 304 WITH CAF

Standards :

1	2
Design Standard	BS 1868 / API 6D / ASME B16.34
Inspection & Testing Standard	API 598 / BS 1868 / BS 6755
Face to Face	ASME B16.10
Flange Connection	ASME B16.5
Butt Weld Connection	ASME B16.25
Pressure Temperature Rating	ASME B16.34

NB	ASA-150		ASA-300		ASA-600
	L	H	L	H	L.5	H
40	165	138	241	159	241	175
50	203	152	267	176	292	190
65	216	161	292	187	330	200
80	241	173	317	194	356	205
100	292	200	356	275	432	229
150	355	247	445	284	558	311
200	495	284	533	331	660	375
250	622	327	622	368	787	378
300	698	353	711	400	838	435
350	787	461	812	511	889	565
400	914	498	838	552	990	592
450	914	527	914	581	1092	642
500	940	581	990	616	1193	694
600	965	622	1143	664	1397	735

Check Valves | Forging

If a fluid gets contaminated while flowing in its channel, backflow of this fluid can contaminate its source. For this reason, backflow of fluids should be prevented to avoid contamination.

Check valves manufactured by Brosco prevent backflow successfully and are resistant to high pressure and temperatures.

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)

• Hard faced (Stellite-6) seating surfaces also available
• Horizontal Piston type Integral hard face Seat Design.
• Design appropriate for high-pressure temperature service.
• 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	SEAT RING	1	AISI 410
			AISI 304
			AISI 316
3	VALVE	1	AISI 410
			AISI 304
			AISI 316
5	GASKET	1	SPIRAL WOUND S.S. 304 WITH CAF FILLER
6	COVER	1	A 105
			A 182 (F 304)
			A 182 (F 316)

Standards :

1	2
Design Standard	BS 5351
Inspection & Testing Standard	API 598 / BS 6755 Part 1
Face to Face	ASME B16.11
Flange Connection	ASME B20.1
Butt Weld Connection	ASME B16.25
Pressure Temperature Rating	ASME B16.34

SCREWED / SOCKET WELD
SIZE	A	B
15	87	61
20	95	67
25	106	67
40	140	95
50	144	110

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