Check valve

Products

Check valve

Ductile cast iron check valves are double flanged, resilient seated. They are widely used to prevent backflow of water by rubber-flap in potable water system or sewage system.

Processing standard: DIN EN 12334

Face to face according to: DIN EN 558-1 series 48

Flange standard: DIN EN 1092-2

Valve body and seat pressure standard: DIN EN 1563

Material standard: KTW and DVGW W270

Product parameters

Size DN mm	Face to face length acc. to DIN EN 558-1 Series 48 L mm	Flange Dia D mm	Dimension					Weight kg	Volume m³
Size DN mm	Face to face length acc. to DIN EN 558-1 Series 48 L mm	Flange Dia D mm	A mm	B mm	H1 mm	H2 mm	H mm	Weight kg	Volume m³
40	180	150	60	130	75	108	183	10	0.01
50	200	165	66	141	82	116	198	11	0.01
65	240	185	76	156	93	129	222	13	0.01
80	260	200	81	171	100	141	241	17.5	0.02
100	300	220	82	200	110	164	274	29.4	0.02
125	350	250	90	244	125	204	329	35.5	0.03
150	400	285	88	280	142	223	365	54.6	0.05
200	500	340	149	313	170	260	430	78	0.09
250	600	395	198	386	200	318	518	125	0.13
300	700	445	206	450	228	352	580	161	0.19

Product parameters

Size DN mm	Face to face length acc. to DIN EN 558-1 Series 48 L mm	Flange Dia D mm	Dimension					Weight kg	Volume m³
Size DN mm	Face to face length acc. to DIN EN 558-1 Series 48 L mm	Flange Dia D mm	A mm	B mm	H1 mm	H2 mm	H mm	Weight kg	Volume m³
40	180	150	60	130	75	108	183	10	0.01
50	200	165	66	141	82	116	198	11	0.01
65	240	185	76	156	93	129	222	13	0.01
80	260	200	81	171	100	141	241	17.5	0.02
100	300	220	82	200	110	164	274	29.4	0.02
125	350	250	90	244	125	204	329	35.5	0.03
150	400	285	88	280	142	223	365	54.6	0.05
200	500	340	149	313	170	260	430	78	0.09
250	600	395	198	386	200	318	518	125	0.13
300	700	445	206	450	228	352	580	161	0.19

Range of applicable: potable water

Size mm DN	Pressure rating in bar PN	Hydro test pressure in bar		Admissible working pressure in bar up to 70℃
		Body	Seat
40-300	10	15	10	10

Material list:

Part name	Material
Valve Body	Ductile cast iron (Tensile strength ≥ 450 MPa, elongation: 15%)
Valve Cover	Ductile cast iron (Tensile strength ≥ 450 MPa, elongation: 15%)
Flap	Ductile cast iron (Tensile strength ≥ 450 MPa, elongation: 15%)
Cover gasket	EPDM or NBR
Bolts and nuts	Stainless steel
Surface treatment	Epoxy powder coating

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