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Dual Plate Check Valve (Duo Check Valve)

Product Range

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Size: 1/2"~60" (DN15~DN1500)
Pressure Rating: CL150~2500LB (PN6~PN420)
Body Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
End Connection: Wafer, Lug, Flange

Technical Standard

• Design & Manufacturing Standard: API 594, ASME B16.34
  
• Structure Length Size: API 594, ASME B16.10, EN 558
  
• Flange Connection Size: ASME B16.5, ASME B16.47, EN 1092
  
• Check & Experiment: API 598, BS 6755, EN12266
  

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Product Features

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☆ One piece compact body, small in size, light in weight
☆ Sandwiched installed between two flanges, short in length and takes up very little space
☆ Spring loaded butterfly swing type disc, the disc close quickly with less water hammer
☆ Full port design, low flow resistance
☆ The disc can open in very low pressure differential
☆ Horizontal or vertical service
☆ PTFE seat sealing is available

Part Materials List & Dimensions

Materials for main parts
Part	WCB	A352 LCB	A217 WC6	A217 WC9	A217 C5	A217 C12	A351 CF8	A351 CF8M
Body	A216 WCB	A352 LCB	A217 WC6	A217 WC9	A217 C5	A217 C12	A351 CF8	A351 CF8M
Disc	A351 CF8	A351 CF8	A182 F11	A182 F22	A217 C5	A217 C12	A182 F304	A182 F316
Stem	A182 F304	A182 F304	A182 F304	A182 F304	A182 F304	A182 F304	A182 F304	A182 F316
Spring	Stainless Steel/Inconel X750

Main Dimensions Wafer Dual Plate Check Valve
Size		D	D1	D2	L	R	t	Weight(Kg)
mm	inch
50	2	107	65	43.3	43	28.8	19	1.5
65	2 1/2	127	80	60.2	46	36.1	20	2.4
80	3	142	94	66.4	64	43.4	28	3.6
100	4	162	117	90.8	64	52.8	27	5.7
125	5	192	145	116.9	70	65.7	30	7.3
150	6	213	170	144.6	76	78.6	31	9
200	8	273	224	198.2	89	104.4	33	17
250	10	323	265	233.7	114	127	50	26
300	12	378	310	283.9	114	148.3	43	42
350	14	438	360	332.9	127	172.4	46	55
400	16	439	410	381	140	197.4	52	75
450	18	555	450	419.9	152	217.8	58	101~ 107
500	20	594	505	467.8	152	241	58	111
600	24	690	624	572.6	178	295.4	73	172
700	28	800	720	680	29	354	98	219

Inquiry

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