Swing Check Valves

Check valves are used in pipelines for water supply and sewerage systems, and they play a role in protecting the pump or equipment on the pipeline by blocking the reverse flow that occurs when the pump stops operating.
According to the user's request, it is possible to apply a fully-closing check valve with a dash-pot attached to prevent abrupt closing due to backflow.
Bypass valve or weight can be applied according to the user's requirement.

Standard

200㎜ ~ 1,500㎜ (※ Small diameters of 200㎜ or less and large diameter of 1,500㎜ or more can be manufactured according to customer requirements.)

Working Pressure

Type 1 : 0.44MPa (4.5㎏/㎠)
Type 2 : 0.74MPa (7.5㎏/㎠)
Type 3 : 0.98MPa (10㎏/㎠)
High pressure of up to 1.57MPa(16㎏/㎠) or higher is possible according to customer's request.

Valve Joint Part

Flange type, standard specifications are KS D3578, KS B 1511, and other specifications are applicable according to customer's request.

Working Fluid

Freshwater and seawater

Material
Dimensions

Main part material

No	Part Name	Material	KS
1	Body	Ductile Iron	GCD450
		Steel Structure	SS400
		Stainless Steel Casting	SSC13
		Stainless Steel	STS304
		Steel Casting	SC410
2	Disc	Ductile Iron	GCD 450
		Steel Structure	SS400
		Stainless Steel	SSC13
		Steel Casting	SC410
3	Body seat	Stainless Steel	STS304
3	Body seat	Bronze casting	BC6
4	Disc seat	Bronze casting	BC6
		Stainless Steel	STS304
		Rubber for water works	NBR/EPDM
5	Valve seat	Stainless Steel	STS304

External Dimensions

Fully Closed Check Valve

**Swing Check Valves Dimensions** / Unit : mm
Model	Nominal Diameter	L	Flange					*A1 (Fully closed)	*A3	*H1	*H1
Model	Nominal Diameter	L	ØD	ØC	ØG	n-Øh	T×f	*A1 (Fully closed)	*A3	*H1	*H1
SJM-SC1-200	200	465	342	295	264	8-23	22×2	250	280	100	150
SJM-SC1-250	250	600	410	350	319	12-23	25×3	460	350	230	450
SJM-SC1-300	300	650	464	400	367	12-23	27×3	520	400	260	490
SJM-SC1-350	350	700	530	460	427	16-23	28×3	580	430	290	530
SJM-SC1-400	400	800	582	515	477	16-27	29×3	620	450	320	600
SJM-SC1-450	450	850	652	565	518	20-27	30×3	660	490	340	634
SJM-SC1-500	500	900	706	620	582	20-27	31×3	690	500	360	680
SJM-SC1-600	600	1050	810	725	682	20-30	34×3	760	630	430	820
SJM-SC1-700	700	1200	928	840	797	24-30	34×3	830	690	500	940
SJM-SC1-800	800	1270	1034	950	904	24-33	36×3	920	740	560	1010
SJM-SC1-900	900	1350	1156	1050	1004	28-33	38×3	970	810	600	1110
SJM-SC1-1000	1000	1360	1262	1160	1111	28-36	42×3	1040	920	650	1160
SJM-SC1-1100	1100	1450	1366	1270	1200	32-36	43×3	1150	1050	740	1300
SJM-SC1-1200	1200	1540	1470	1387	1304	32-36	45×3	1280	1200	820	1450
SJM-SC1-1350	1350	1650	1642	1552	1462	36-40	51×3	1390	1330	910	1590
SJM-SC1-1500	1500	1750	1800	1710	1620	36-40	53×3	1500	1450	1000	1700

1. The flange is KS D 3578 F-12 standard, and other standards can be applied upon request.
2. The valve's face-to-face distance applies to the manufacturer's standard specifications.
3. * The displayed dimensions are for reference only.

Directly Closed Check Valve

**Swing Check Valves Dimensions** / Unit : mm
Model	Nominal Diameter	L	Flange					*A2 (Directly closed)	*A3	*H1	*H1
Model	Nominal Diameter	L	ØD	ØC	ØG	n-Øh	T × f	*A2 (Directly closed)	*A3	*H1	*H1
SJM-SC2-200	200	465	342	295	264	8-23	22×2	200	280	100	150
SJM-SC2-250	250	600	410	350	319	12-23	25×3	270	350	230	450
SJM-SC2-300	300	650	464	400	367	12-23	27×3	360	400	260	490
SJM-SC2-350	350	700	530	460	427	16-23	28×3	420	430	290	530
SJM-SC2-400	400	800	582	515	477	16-27	29×3	500	450	320	600
SJM-SC2-450	450	850	652	565	518	20-27	30×3	540	490	340	634
SJM-SC2-500	500	900	706	620	582	20-27	31×3	580	500	360	680
SJM-SC2-600	600	1050	810	725	682	20-30	34×3	670	630	430	820
SJM-SC2-700	700	1200	928	840	797	24-30	34×3	750	690	500	940
SJM-SC2-800	800	1270	1034	950	904	24-33	36×3	810	740	560	1010
SJM-SC2-900	900	1350	1156	1050	1004	28-33	38×3	890	810	600	1110
SJM-SC2-1000	1000	1360	1262	1160	1111	28-36	42×3	960	920	650	1160
SJM-SC2-1100	1100	1450	1366	1270	1200	32-36	43×3	1030	1050	740	1300
SJM-SC2-1200	1200	1540	1470	1387	1304	32-36	45×3	1100	1200	820	1450
SJM-SC2-1350	1350	1650	1642	1552	1462	36-40	51×3	1160	1330	910	1590
SJM-SC2-1500	1500	1750	1800	1710	1620	36-40	53×3	1220	1450	1000	1700