Check valve Type: 3256N Stainless steel Internal thread (NPT) PN40

Product documents

Document	Document type
Product Manual	Installation Operation Manual (PDF)
Product overview	Download

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Tables

Size table
DN	G	H	L	Opening pressure	Weight
		[mm]	[mm]	[bar]	[kg]
15	½ "	36	65	0.2	0.22
20	¾ "	44	75	0.2	0.37
25	1 "	57	90	0.2	0.72
32	1 ¼ "	64	111	0.2	1.24
40	1 ½ "	76	121	0.2	1.74
50	2 "	87	151	0.2	2.62

Pressure and temperature range
Temperature	120	180	[°C]
Maximum working pressure	40	5	[bar]

Stock item

Norm: ASME

Construction type: Free-flow

Housing material: Stainless steel

Material quality: ASTM A351 CF8M

Nominal inner diameter

Connection: Internal thread (NPT)

Pressure rating: PN40

Face to Face length (mm)

Valve shape: Flap

Sealing: PTFE

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Check valve Type: 3256N Stainless steel/PTFE Disc With spring Free-flow PN40 Internal thread (NPT) 1/2" (15) ERIKS Item #: 11813305 Compare Compare	Please login to see prices	{"itemTrackPD":{ "item_name": "check valve type: 3256n stainless steel/ptfe disc with spring free-flow pn40 internal thread (npt) 1/2" (15)", "item_id": "gr0000000561500", "material_number": "11813305", "price": "0", "item_brand": "no brand", "item_category":"valves and actuators", "item_category2":"non-return valves", "item_category3":"non-return valves with threaded connection", "item_category4": "pr249349394354832", "item_variant": "pce", "index": "1", "quantity": "" } }
Check valve Type: 3256N Stainless steel/PTFE Disc With spring Free-flow PN40 Internal thread (NPT) 3/4" (20) ERIKS Item #: 11813306 Compare Compare	Please login to see prices	{"itemTrackPD":{ "item_name": "check valve type: 3256n stainless steel/ptfe disc with spring free-flow pn40 internal thread (npt) 3/4" (20)", "item_id": "gr0000000565803", "material_number": "11813306", "price": "0", "item_brand": "no brand", "item_category":"valves and actuators", "item_category2":"non-return valves", "item_category3":"non-return valves with threaded connection", "item_category4": "pr249349394354832", "item_variant": "pce", "index": "2", "quantity": "" } }
Check valve Type: 3256N Stainless steel/PTFE Disc With spring Free-flow PN40 Internal thread (NPT) 1" (25) ERIKS Item #: 11813307 Compare Compare	Please login to see prices	{"itemTrackPD":{ "item_name": "check valve type: 3256n stainless steel/ptfe disc with spring free-flow pn40 internal thread (npt) 1" (25)", "item_id": "gr0000000559589", "material_number": "11813307", "price": "0", "item_brand": "no brand", "item_category":"valves and actuators", "item_category2":"non-return valves", "item_category3":"non-return valves with threaded connection", "item_category4": "pr249349394354832", "item_variant": "pce", "index": "3", "quantity": "" } }
Check valve Type: 3256N Stainless steel/PTFE Disc With spring Free-flow PN40 Internal thread (NPT) 1.1/2" (40) ERIKS Item #: 11813309 Compare Compare	Please login to see prices	{"itemTrackPD":{ "item_name": "check valve type: 3256n stainless steel/ptfe disc with spring free-flow pn40 internal thread (npt) 1.1/2" (40)", "item_id": "gr0000000564098", "material_number": "11813309", "price": "0", "item_brand": "no brand", "item_category":"valves and actuators", "item_category2":"non-return valves", "item_category3":"non-return valves with threaded connection", "item_category4": "pr249349394354832", "item_variant": "pce", "index": "4", "quantity": "" } }
Check valve Type: 3256N Stainless steel/PTFE Disc With spring Free-flow PN40 Internal thread (NPT) 2" (50) ERIKS Item #: 11813310 Compare Compare	Please login to see prices	{"itemTrackPD":{ "item_name": "check valve type: 3256n stainless steel/ptfe disc with spring free-flow pn40 internal thread (npt) 2" (50)", "item_id": "gr0000000560227", "material_number": "11813310", "price": "0", "item_brand": "no brand", "item_category":"valves and actuators", "item_category2":"non-return valves", "item_category3":"non-return valves with threaded connection", "item_category4": "pr249349394354832", "item_variant": "pce", "index": "5", "quantity": "" } }