Class150-300 DUO-CHECK Valve,China Class150-300 DUO-CHECK Valve,Class150-300 DUO-CHECK Valve Manufacturer,Class150-300 DUO-CHECK Valve Supplier,Class150-300 DUO-CHECK Valve Factory

Duo-Check Valve

SABARK Duo-Check Wafer Valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. Its design meets API 594 which is approximately one fourth the face to face dimension and 15% to 20% the weight, on most popular sizes, making them less expensive than a swing check valve. It is much easier to install between standard gaskets and line End dimension . The savings compound during installation due to ease of handling and only one set of flange studs is required. Therefore, it is more cost effective to install, and also to maintain.

■ Design Featutes
Lightweight and Compact Wafer Design
Dual Plate, Flat Seat Design
Independent Spring Action
Independent Plate Suspension with Unique Hinge Design(larger sizes)
Simple, External Body Geometry
Variety of Body Designs Available-Lug and Dowble Flange
Wide Variety of Materials
Flexibility in Installation Position
Body Strength and Rigidity
Retainerless Duo-Check Design
Eliminates Tapped Holes in Body
Vertical Hinged Design

■ Standards Compliance
Design and Manufacture: ANSI B16.34, API 594
Face to face: API 594
Flanged connection: 2"~24" to ANSI B16.5
22", 26"~36" to MSS-SP-44
to API 605 on request
Test and inspection: API 598
Shell test 150Lb 450 PSI, 300Lb 1125 PSI
Seat test 150Lb 315 PSI, 300Lb 815 PSI (Hydrostatic)
80PSI (Air)

■ Materials List

Part	Specification
B0dy	A216WCB	A351 CF8	A351 CF3	A351 CF8M	A351 CF3M
Disc	A351 CF8	A351 CF8	A351 CF3	A351 CF8M	A351 CF3M
Stem	A182 F6	A182 F304	A182 F304L	A182 F304	A182 F304
Spring	Stainless Steel，inconel
Appl.Medium	Water,Steam/0il	Nitric acid	Strong Oxidizing	Acetic acid	Urea
Appl.Temp.	-29℃~425℃	-196℃~540℃	-1960℃~425℃	-1960℃~540℃	-196℃~455℃

■ Main Dimensions and Weight

Pressure	Size		Dimensions (mm)				Weight (kg)	Matchen the tuve flange (suptly reference)
	NPS	DN	L	D	Ds	D2		Bolt hole cencer round diameter D1	Bolt QuantitV	B0lt Diameter d		B0lt Length L1
	NPS	DN	L	D	Ds	D2		Bolt hole cencer round diameter D1	Bolt QuantitV	in	mm	rf	Rd
Class 150 PN2.0MPa	2	50	60	103	56	51	2	120.5	4	5/8	M	140	155
	21/2	65	67	122	73	65	3	139.5	4	5/8	M16	150	165
	3	80	73	135	88	80	4	152.5	4	5/8	M16	160	175
	4	100	73	173	108	102	6	190.5	8	5/8	M16	170	185
	5	125	86	195	132	127	8	216	8	3/4	M16	190	205
	6	150	98	220	160	152	13	241.5	8	3/4	M20	205	220
	8	200	127	277	210	203	25	298.5	8	3/4	M20	240	255
	10	250	146	337	266	254	39	362	12	7/8	M20	270	285
	12	300	181	407	310	305	54	432	12	7/8	M24	310	325
	14	350	184	448	355	350	80	476	12	1	M24	325	340
	16	400	191	512	405	400	117	540	16	1	M27	340	355
	18	450	203	547	455	450	138	578	16	11/8	M27	365	380
	20	500	219	604	505	500	163	635	20	11/8	M30	385	400
	24	600	222	715	605	600	331	749.5	20	11/4	M30	405	420
	28	700	305	773	700	700	380	795.5	40	3/4	M33	455	-
	30	750	305	824	750	746	425	846	44	3/4	M20	455	-
	32	800	305	878	800	796	560	900	48	3/4	M20	460	-
	36	900	368	983	910	898	640	1009.5	44	7/8	M20	540	-
	42	1050	432	1142	1055	1050	960	1171.5	48	1	M27	625	-
	48	1200	524	1302	1205	1200	1400	1335	44	11/8	M30	740	-

Class 300 PN5.OMPa	2	50	60	1 10	58	54	3	127	8	5/8	M16	155	175
	21/2	65	67	128	73	65	4	149	8	3/4	M20	175	195
	3	80	73	147	88	80	6	168	8	3/4	M20	190	210
	4	100	73	179	108	102	8	200	8	3/4	M20	195	215
	5	125	86	214	132	127	15	235	8	3/4	M20	215	235
	6	150	98	249	160	152	18	270	12	3/4	M20	230	250
	8	200	127	305	210	203	31	330	12	7/8	M24	280	300
	10	250	146	359	266	254	51	387.5	16	1	M27	315	335
	12	300	181	420	310	305	77	451	16	11/8	M30	365	385
	14	350	222	483	355	350	117	514.5	20	11/8	M330	410	430
	16	400	232	537	405	400	190	571.5	20	11/4	M33	435	455
	18	450	264	594	455	450	200	628.5	24	11/4	M33	475	495
	20	500	292	652	505	500	265	686	24	11/4	M33	510	535
	24	600	318	772	608	600	410	813	24	11/2	M39	560	585
	30	750	368	882	740	735	660	921	36	13/8	M36	650	-
	36	900	483	1044	880	873	1020	1089	32	15/8	M42	800	-
	42	1050	568	1 196	1045	1035	1540	1224.5	36	1 3/4	M45	920	-
	48	1200	629	1365	1190	1 179	2260	1416	40	1 7/8	M48	1010	-

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