Axial flow check valve, 8 inch, 900LB rating, WCB cast steel, flanged ends for high-pressure oil & gas systems

Axial Flow Check Valve – 8″ Flanged, 900LB Rating, WCB Cast Steel, ASME B16.34 Compliant

Technical Specifications:

1. Design and manufacture according to: API 6D
2. Flange connection according to ASME B16.5 , ;
3. Test and inspection according to: API 598.
4. Material conform to : ANSI/ASTM
5. Main Material: WCB, CF8M, CF3M, CN7M, CW12MW, CW6MC, CY40, CR20, etc.

Product Summary

The axial flow check valve 900lb is designed for high-integrity pipelines in oil, gas, and power generation systems. Made from WCB cast steel, it ensures durability under extreme pressure and temperature conditions. Its axial disc mechanism opens fully under forward flow and closes rapidly to prevent backflow—minimizing turbulence and energy loss. With flanged ends and a 900LB pressure rating, it handles high-pressure systems up to 425°C. Every valve is manufactured to API 6D , ASME B16.34 standards and tested per API 598. Whether for refineries or power plants, this axial flow check valve 900lb delivers reliable, leak-tight performance. Trust SFANVALVE for valves built to last.

Brand	SFAN VALVE OR "OEM"
Flow bore	Standard bore
Material	Carbon steel, Stainless steel, Alloy steel or other
Dimension	DN50(2") to DN1200(48")
Class	150~2500
Medium	Water, oil &gas.
Temperature	-196℃(cryogenic design) to 700℃
Valve test	100% quantity tested before delivery
Valve guarantee	18 months after shipments and 12 months after installed
Packing	Plywood or carton cases
Delivery time	7 days to 30 days
Place of Origin	Zhejiang, China

3D VIDEO

Dimension Catalog

Axial Check Valve Part Material

Part Name	Carbon Steel	Low Temp. Steel	Stainless Steel
Body	A216-WCB	A352-LCB/A352-LCC	A351-CF8(M)
Disc	A216-WCB	A352-LCB/A352-LCC	A351-CF8(M)
Guiding part	A216-WCB	A352-LCB/A352-LCC	A351-CF8(M)
Sleeve	SS304/316	SS304/316	SS304/316
Spring	SS304, SS316, Inconel X-750	SS304, SS316, Inconel X-750	SS304, SS316, Inconel X-750

Axial Check Valve Dimension 150LB~300LB

Size	-	CLASS 150	CLASS 150	PN10/16/25	PN10/16/25	CLASS 300	CLASS 300	PN40	PN40
NPS	DN	RF/BW(L)	RTJ(L)	LONG(L)	SHORT(L)	RF/BW(L)	RTJ(L)	LONG(L)	SHORT(L)
2	50	203	-	203	130	267	-	267	130
2.1/2	65	216	-	216	160	292	-	292	160
3	80	241	-	241	180	318	-	318	180
4	100	292	-	282	200	356	-	356	200
5	125	330	-	330	230	400	-	400	230
6	150	356	-	356	270	444	-	444	270
B	200	495	-	495	330	533	-	533	330
10	250	622	-	622	370	622	-	622	370
12	300	698	-	698	450	711	-	711	450
14	350	787	-	787	520	838	-	838	520
16	400	864	-	864	580	864	-	864	580
18	450	978	-	978	650	978	-	978	650
20	500	978	-	978	720	1016	-	1016	720
24	600	1295	-	1295	980	1346	-	1346	980
28	700	1448	-	1448	1180	1449	-	-	-
30	750	1524	-	-	-	1594	-	-	-
36	900	1956	-	-	-	2083	-	-	-

Axial Check Valve Dimension in 600LB~900LB

Size		CLASS 600	CLASS 600	PN100	PN100	CLASS 900	CLASS 900	PN160	PN160
NPS	DN	RF/BW(L)	RTJ(L)	LONG(L)	SHORT(L)	RF/BW(L)	RTJ(L)	LONG(L)	SHORT(L)
2	50	292	295	292	170	368	371	388	200
2.1/2	65	330	333	330	190	419	422	419	230
3	80	356	359	356	220	381	384	381	260
4	100	422	435	432	260	457	480	457	200
5	125	508	511	508	300	559	562	559	350
6	150	559	562	559	340	610	613	610	390
8	200	660	664	660	420	737	740	737	480
10	250	787	791	787	480	838	841	838	550
12	300	838	841	838	590	965	968	965	670
14	350	889	892	889	650	1092	1038	-	-
16	400	991	984	991	720	1130	1140	-	-
18	450	1082	1095	1092	770	1212	1232	-	-
20	500	1194	1200	1194	850	1321	1334	-	-
24	600	1307	1407	-	-	1549	1508	-	-
28	700	1600	-	-	-	-	-	-	-
30	750	1651	-	-	-	-	-	-	-
36	900	2083	-	-	-	-	-	-	-

Axial Check Valve Dimension in 1500LB~2500LB

Size		CLASS 1500	CLASS 1500	CLASS 2500	CLASS 2500
NPS	DN	RF/BW(L)	RTJ(L)	RF/BW(L)	RTJ(L)
2	50	368	371	451	454
2.1/2	65	419	422	508	514
3	80	470	473	578	584
4	100	546	549	673	683
5	125	673	676	794	807
6	180	705	711	914	927
8	200	832	841	1022	1038
10	250	991	1000	1270	1292
12	300	1130	1146	1422	1445
14	350	1257	1276	-	-
16	400	1384	1407	-	-
18	450	1537	1559	-	-
20	500	1664	1686	-	-
24	600	1943	1972	-	-

API598 Pressure Test Table

Test Pressure	Class 150	Class 300	Class 600	Class 800 (Forge Steel Valve)	Class 900	Class 1500	Class 2500
Shell Test(MPa)	3.0	7.5	15.4	21.0	22.5	37.5	63.0
High Pressure Seal Test(MPa)	2.2	5.5	11.3	15.4	16.5	27.5	46.2
Low Pressure Seal Test(MPa)	0.6	0.6	0.6	0.6	0.6	0.6	0.6

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.

If we purchase from you, will you manufacture according to our 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.

Will "SFANVALVE" deliver on time ?

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.”

What is the warranty terms ？

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