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Cast steel swing check valve, 6 inch, 300LB rating, flanged ends, WCB material for industrial fluid control
Cast steel swing check valve bonnet
Cast steel swing check valve flange end
Cast steel swing check valve 2

Cast Steel Swing Check Valve – 6″ Flanged, 300LB Rating, WCB Material, ASME B16.34 Compliant

Technical Specifications:

1. Design and manufacture according to: BS1868, API594, ASME B16.34
2. Connection ends according to:
a) flange connection according to ASME B16.5 , ASME B16.47;
b) butt weld according to ASME B16.25 ;
3. Test and inspection according to: API 598.
4. Structure features: B.B, PSB;
5. Material conform to : ANSI/ASTM
6. Main Material: WCB, CF8M, CF3M, CN7M, CW12MW, CW6MC, CY40, CR20,  etc.

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Product Summary

The cast steel swing check valve is designed to prevent backflow in high-pressure industrial pipelines. Made from ASTM A216 WCB cast carbon steel, it ensures durability in water, oil, gas, and steam systems. Featuring flanged ends and a 300LB pressure rating, it handles demanding conditions up to 425°C. Its swing disc mechanism opens smoothly with forward flow and closes automatically to stop reverse flow—protecting pumps and equipment. Every valve is manufactured to BS 1868, ASME B16.34 standards and tested per API 598. Whether for refineries, power plants, or chemical facilities, this cast steel swing check valve delivers reliable, leak-tight performance. Trust SFANVALVE for valves built to last.

BrandSFAN VALVE OR "OEM"
Flow boreStandard bore
MaterialCarbon steel, Stainless steel, Alloy steel or other
DimensionDN50(2") to DN1200(48")
Class150~2500
MediumWater, oil &gas.
Temperature-196℃(cryogenic design) to 700℃
Valve test100% quantity tested before delivery
Valve guarantee18 months after shipments and 12 months after installed
PackingPlywood or carton cases
Delivery time7 days to 30 days
Place of OriginZhejiang, China

3D VIDEO

Dimension Catalog

Technical diagram of a Cast Steel Swing Check Valve with a bolted cover, showing a cross-sectional view with 14 numbered parts labeled, including the Body, Disc, Seat, Hinge, Cover, and Bolts.

Cast Steel Check Valve 150Lb~300Lb Dimension

DN(mm)NPS(in)150Lb L(RF)150Lb L(RTJ)150Lb
L(BW)		150Lb
Weight(kg)		150Lb
H(mm)		300Lb L(RF)300Lb
L(RTJ)		300Lb
L(BW)		300Lb
Weight(kg)		300Lb
H(mm)
5022032162031713226728326728144
652.1/22162292162314729230829231169
8032412542412917631833331842210
10042923052924819835637135665260
12553303433307025540041640095295
150635636835685320444460444140326
2008495508495148380533549533223380
25010622635622240440622638622360440
30012699711699350480711727711505520
35014787800787435530838854838665540
40016864876864560580864879864835588
45018978991978665618978994978968670
500209789919788506571016103510161350720
6002412951308129512406911346136813461825850
700281448-144816357941499-149923851150
750301524-152419208571594-159426601260
900361956-195622509912083-208333151380

Cast Steel Check Valve Part Material

NO.PartsMaterial
1BodyA216 WCB/WCCA352 LCB/LCCA217 WC6/WC9/WC5A351 CF8/CF3A351 CF8M/CF3MA351 CF8CA890 4A/5A/6A
2SeatA105+HFA350 LF2+HFA182 F11/F22/F304+HFA182 F304/F304L+HFA182 F316/F316L+HFA182 F321+HFA182 F51/F53/F55+HF
3DiscA216 WCB/WCC+HFA352 LCB/LCC+HFA217 WC6/WC9/WC5+HFA351 CF8/CF3+HFA351 CF8M/CF3M+HFA351 CF8C+HFA890 4A/5A/6A+HF
4HingeA216 WCB/WCCA352 LCB/LCCA217 WC6/WC9/WC5A351 CF8/CF3A351 CF8M/CF3MA351 CF8CA890 4A/5A/6A
5Disc NutA194 2H(M)A194 4A194 4A194 8A194 8MA194 4A194 4
6PinA182 F6aA182 F6aA182 F6aA182 F304(L)A182 F316(L)A182 F316(L)A182 F316(L)
7Hinge PinA182 F6aA182 F6aA182 F6aA182 F304(L)A182 F316(L)A182 F316(L)A182 F316(L)
8YokeA216 WCB/WCCA352 LCB/LCCA217 WC6/WC9/WC5A351 CF8/CF3A351 CF8M/CF3MA351 CF8CA890 4A/5A/6A
9NutA194 2H(M)A194 4A194 4A194 8A194 8MA194 4A194 4
10BoltA193 B7(M)A193 L7A193 B16A193B8A193 B8MA193 B16A193 B16
11BoltA193 B7(M)A193 L7A193 B16A193B8A193 B8MA193 B16A193 B16
12GasktS.S+GraphiteS.S+GraphiteS.S+GraphiteS.S+GraphiteS.S+GraphiteS.S+GraphiteS.S+Graphite
13CoverA216 WCB/WCCA352 LCB/LCCA217 WC6/WC9/WC5A351 CF8/CF3A351 CF8M/CF3MA351 CF8CA890 4A/5A/6A
14Lift EyeboltASI 1025+ZnAISI 1025+ZnAISI 1025+ZnAISI 1025+ZnAISI 1025+ZnAISI 1025+ZnAISI 1025+Zn

API598 Pressure Test Table

Test PressureClass 150Class 300Class 600Class 800
(Forge Steel Valve)		Class 900Class 1500Class 2500
Shell Test(MPa)3.07.515.421.022.537.563.0
High Pressure
Seal Test(MPa)		2.25.511.315.416.527.546.2
Low Pressure
Seal Test(MPa)		0.60.60.60.60.60.60.6
Test Temperature: 41℉（5℃)~≤122℉(50℃)

Your questions answered

Common questions

How can you trust SFANVALVE ?

For Sfanvalve’s standard products, we are willing to start production without any  payment in advance. We accept product inspection upon completion, and payment is only due once the inspection is passed. SFAN will then arrange shipment to your designated warehouse as per your requirements.

Yes. After receiving the contract, we will provide technical drawings. Production will commence based on these drawings once they are confirmed by both parties.

After receiving the contract and confirming the drawings, we will provide a production schedule and manufacture strictly according to it. We will provide photos or videos to share and make a record for every stage of the production process. If a serious delay occurs due to management error, we will arrange air shipment and bear all costs by air.”

The warranty period is 18 months from the date of shipment or 12 months from the date of installation, whichever occurs first.