Axial Flow Check Valve

Nominal diameter: 16"

Pressure rating: Class 900#

Connection: RF flanged as per ASME B16.5

Body material: ASTM A352 LCC, trim: SS304L+Stellite

Features: cast steel one piece body axial flow check valve, stainless steel internal parts.

product details

Product parameter

Detail introduction

Axial Flow Check Valves are designed, manufactured in accordance with API 6D, ASME B16.34 and tested in accordance with API 598 or API6D, the valve range is from 2 inch up to 48 inch, pressure rating is from 150LB up to 2500LB . The configuration of disc, seating and body provides streamlined flow path with a venture effect so as to reduce pressure loss as small as possible . The compressed disc spring initiates valve closure as flow s low down and provides quick reaction on flow velocity change . The unique design features ensure the valve to deliver an effective dynamic reaction under various flow deceleration conditions, the design valve can be used in a wide range of critical and demanding service applications, such as fast-reversing reciprocating compressor system or in installations where the check valve must be placed in close proximity to the pump inlet or outlet.

Design features

Few moving parts-Disc is the only moving part, minimizing wear.

Axial movement of disc - Disc and seating configuration give streamlined flow Path with venture effect, resulting in low pressure drop.

Short stroke of spring-assisted disc Inlet flow velocity moves disc axially with short stroke. In response to flow velocity reduction, a compressed spring initiates valve closure and provides quick response.

Spring options-Choice of spring affects critical velocity and valve response. Selection is made on engineering evaluation of specific applications. In absence of this data, a standard spring will provided.

Main parts and material list

No .	Part	Standard	Low Temperature	High Temperature	Stainless Steel	Sour Service
1	Body	ASTM A216 WCB	ASTM A352 LCB	ASTM A217 WC9	ASTM A351 CF8M	ASTM A216 WCB
2	Segment Ring	AISI 410	AISI 316	AISI 410	AISI 316	AISI 410(Nace)
3	Pin	ASTM A276 410	ASTM A276 316	ASTM A276 410	ASTM A276 316	ASTM A276 410(Nace)
4	Seat	ASTM A105N/STL.6	ASTM A350 LF2/STL.6	ASTM A182 F22/STL.6	ASTM A182 F316/STL.6	ASTM A105N/STL.6
5	Fore Sleeve	ASTM A182 F6a	ASTM A182 F316	ASTM A182 F6a	ASTM A182 F316	ASTM A182 F6a
6	Screw	ASTM A193 B7	ASTM A320 L7	ASTM A193 B16	ASTM A193 B8	ASTM A193 B7M
7	Disc	ASTM A105N/Cr13	ASTM A350 LF2/STL.6	ASTM A182 F6a	ASTM A182 F316	ASTM A10N/Cr13(Nace)
8	Leading Shaft	ASTM A182 F6a	ASTM A182 F316	ASTM A182 F22/STL.6	ASTM A182 F316	ASTM A182 F6a
9	Locking Nut	ASTM A276 410	ASTM A276 316	ASTM A276 410	ASTM A276 316	ASTM A276 410(Nace)
10	Spring	Inconel X-750	Inconel X-750	Inconel X-750	Inconel X-750	Inconel X-750
11	Blocking Plate	ASTM A276 410	ASTM A276 316	ASTM A276 410	ASTM A276 316	ASTM A276 410(Nace)
12	Nut	ASTM A276 410	ASTM A276 316	ASTM A276 410	ASTM A276 316	ASTM A276 410(Nace)

Dimensions & weights for ANSI Class 150

Size	in	2"	3"	4"	6"	8"	10"	12"	14"	16"	18"	20"	24"	26"	28"	30"	36"
Size	mm	50	80	100	150	200	250	300	350	400	450	500	600	650	700	750	900
d	mm	49	74	100	150	201	252	303	334	385	436	487	589	633	684	735	874
H	mm	84	105	126	154	189	224	265	293	328	349	384	447	479	510	541	643
L	mm	203	241	292	356	495	622	699	787	864	978	978	1295	1295	1448	1524	1956
Weight	kg	19	30	42	84	150	230	332	368	490	632	846	1370	1450	1850	2120	2980

Dimensions & weights for ANSI Class 300

Size	in	2"	3"	4"	6"	8"	10"	12"	14"	16"	18"	20"	24"	26"	28"	30"	36"
Size	mm	50	80	100	150	200	250	300	350	400	450	500	600	650	700	750	900
d	mm	49	74	100	150	201	252	303	334	385	436	487	589	633	684	735	874
H	mm	91	115	140	175	210	244	286	321	356	391	426	503	534	569	600	699
L	mm	267	318	356	445	533	622	711	838	864	978	1016	1346	1346	1499	1594	2083
Weight	kg	22	42	71	127	212	297	370	490	615	735	980	1815	2115	2320	2460	4730

Dimensions & weights for ANSI Class 600

Size	in	2"	3"	4"	6"	8"	10"	12"	14"	16"	18"	20"	24"	26"	28"	30"	36"
Size	mm	50	80	100	150	200	250	300	350	400	450	500	600	650	700	750	900
d	mm	49	74	100	150	201	252	303	334	385	436	487	589	633	684	735	874
H	mm	119	133	161	210	258	300	335	353	388	433	472	573	1015	1075	1130	1315
L/L1 (RF/BW)	mm	292	356	432	559	660	787	838	889	991	1092	1194	1397	1448	1600	1651	2083
L2(RTJ)	mm	295	359	435	562	664	791	841	892	994	1095	1200	1407	1461	1613	1664	/
Weight	kg	36	61	116	217	420	570	788	1020	1440	1695	2600	3600	4715	4995	5880	10450

Dimensions & weights for ANSI Class 900

Size	in	2"	3"	4"	6"	8"	10"	12"	14"	16"	18"	20"	24"
Size	mm	50	80	100	150	200	250	300	350	400	450	500	600
d	mm	49	74	100	150	201	252	303	322	373	423	471	570
H	mm	165	210	273	356	419	508	559	603	686	743	813	940
L/L1 (RF/BW)	mm	368	381	457	610	737	838	965	1029	1130	1219	1321	1549
L2(RTJ)	mm	371	384	460	613	740	841	968	1038	1140	1232	1334	1568
Weight	kg	53	82	160	272	548	944	1560	1660	2060	3020	3750	5400

Dimensions & weights for ANSI Class 1500

Size	in	2"	3"	4"	6"	8"	10"	12"	14"	16"	18"	20"	24"
Size	mm	50	80	100	150	200	250	300	350	400	450	500	600
d	mm	49	74	100	144	192	239	287	315	360	406	454	546
H	mm	119	147	171	217	265	321	370	412	454	503	541	643
L/L1 (RF/BW)	mm	368	470	546	705	832	991	1130	1257	1384	1537	1664	1943
L2(RTJ)	mm	371	473	549	711	841	1000	1146	1276	1407	1559	1686	1972
Weight	kg	76	128	230	506	942	1750	2350	2950	3600	5500	6800	10150

Dimensions & weights for ANSI Class 2500

Size	in	2"	3"	4"	6"	8"	10"	12"
Size	mm	50	80	100	150	200	250	300
d	mm	42	62	87	131	179	223	265
H	mm	119	133	161	210	258	300	335
L/L1 (RF/BW)	mm	451	578	673	914	1022	1270	1422
L2(RTJ)	mm	454	584	683	927	1038	1292	1445
Weight	kg	145	260	480	1020	1700	3110	3700