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Non Return Valve (Swing check type)

Home Products Industrial Valves Non-Return Valves Non Return Valve (Swing check type)

We provide high performing Non Return Valve (Swing check type) used for maintaining flow of water in only one direction and stopping the return flow water. Fitted vertically as well as horizontally, they are self-operative by pressure only. They also ensure zero leakage over long life operation.

Dimension as per IS: 5312 Part 1

Size to valve	50	65	80	100	125	150	203	250	300
Face to Face	200	216	247	292	330	356	495	622	798
Flange Diamater	165	185	200	220	250	285	340	395	445
Flange Thickness	16	16	21	22	22.5	23	24.5	26	27.5
P.C.D	125	145	160	180	210	240	295	350	400
No. of holes (Dia)	4x19	4x19	4x19	8x19	8x19	8x23	8x23	12x23	12x23
Hing Pin Diameter	10	10	10	12	12	16	20	22	25
Test Pressure Body	-	-	2.4 MPa	-	-	-	-	1.5 MPa	-
Seat	-	-	1.6 MPa	-	-	-	-	1.0 MPa	-

Material details components on Non - Return Valves

Body, Cover, Door, Bearing, Holder & Door Face Disc	Grey Cast Iron	IS-210, 1978 FG 200
Hinges	Grey Cast Iron	IS-210, 1978 FG 200
Hinge Pin, Door Pin, Door Suspension Pin	Stainless Steel	Stainless Steel IS - 1570, 91, 12CR13
Bolts	Carbon Steel	IS-393-67 class 4 1363-67 4-6
Nuts, Nuts of hinge pin	Carbon Steel	IS-1363-67 class 4 1367-67
Bearing Bushes	Leaded Tin Bronze	IS-318, 81 LTB2 Austenis Iron IS 2749-74
Body Rings	Leaded Tin Bronze	IS-318, 81 LTB2 Stanless Steel 6603-97
Door Faces	Natural / Synthetic Rubber	IS-318 1981 LTB2
	Leaded Tin Bronze LTB
Flange Jointing Material	Natural Rubber	IS-638-79 Type B
Plugs for Hinge Pin Air Release	Galvanized Malleable Iron

Pressure Testing

Sizes (PN)	Rating	Test Pressure Gauge		Test Duration Min
Sizes (PN)	Rating	Body	Seat	Body	Seat
300mm to 125mm	1.6 MPa	2.4 MPa	1.6 MPa	5	2

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