What is the structural length of the valve?

Dec/25/2023 Views:2

The length of the metal valve structure is what is it?

Foreign "Metal Valve structure length" standard modification adopted ISO5752-1988 "flange pipeline system metal valve structure length" international standard, compared with, increased the welding end, clip type, internal thread, external thread structure basic length series and structural length of various valves, more scientific and reasonable, can be international standards, easy to use.

Structural length of the valve from Betu 1-1 to Figure 1-3.

Length of straight-through valve structure

Figure 1-1 Length of straight-through valve structure

Angle-type valve structure length

Figure 1-2 Angle-type valve structure length

Structural length of the clip clamp valve

Figure 1-3 Structural length of the clip clamp valve

The structural length-1 of some valves are shown in Table 1-1~1-5.

Table 1-1 Flange connection valve structure length Basic series unit: mm

nominal size DN	Basic series code name
	1	2	3	4	5	7	8①	9①	10	11①	12	13	14	15	18	19	21	22	23	24①
	structure length ②
10	130	210	102	—	—	108	85	105	—	—	130				80		—		—	——
15	130	210	108	140	165	180	90	105	108	57	130				80		152		170	83
20	150	230	117	152	190	117	95	115	117	64	130				90		178		190	95
25	160	230	127	165	216	127	100	115	127	70	140			120	100		216		210	108
32	180	260	140	178	229	146	105	130	140	76	165			140	110		229		230	114
40	200	260	165	190	241	159	115	130	165	82	165	106	140	240	120		241		260	121
50	230	300	178	216	292	190	125	150	203	102	203	108	150	250	135	216	267	250	300	146
AC 0	290	340	190	241	330	216	145	170	216	108	222	112	170	270	165	241	292	280	340	165
80	310	380	203	283	356	254	155	190	241	121	241	114	180	280	185	283	318	310	390	178
100	350	430	229	305	432	305	175	215	292	146	305	127	190	300		305	356	350	450	216
125	400	500	254	381	508	356	200	250	330	178	356	140	200	325		381	400	400	525	254
150	480	550	267	403	559	406	225	275	356	203	394	140	210	350		403	444	450	600	279
200	600	650	292	419	660	521	275	325	495	248	457	152	230	400		419	533	550	750	330
250	730	775	330	457	787	635	325		622	311	533	165	250	450		457	622	650		394
300	850	900	356	502	838	749	375		698	350	610	178	270	500		502	711	750		419
350	980	1025	381	762	889		425		787	394	686	190	290	550		572	838	850
400	1100	1150	406	838	991		475		914	457	762	216	310	600		610	864	950
450	1200	1275	432	914	1092				978		864	222	330	650		660	978	1050
500	1250	1400	457	991	1194				978		914	229	350	700		711	1016	1150
600	1450	1650	508	1143	1397				1295		1067	267	390	800		787	1346	1350
700	1650		610	1346	1549				1448			292	430	900			1499	1450
800	1850		660		—				1956			318	470	1000			1778	1650

Table 1-2 Structural length of flange connection diaphragm valve in unit: mm

intended size DN	Nominal pressure, PN
	PN6	PN10～20		PN25～50
	structure length
		short	long
10	108	108	130	130
15	108	108	130	130
20	117	117	150	150
25	127	127	160	160
32	146	146	180	180
40	159	159	200	200
50	190	190	230	230
65	216	216	290	290
80	254	254	310	310
100	305	305	350	350
125	356	356	400	400
150	406	406	480	480
200	521	521	600	600
250	635	635	730	730
300	749	749	850	850
Basic series	7	7	1	1

Note: The size of the boldface characters in the table is preferred

Table 1-3 Gate valve, stop valve and check valve of flange connection to copper alloy structure length unit: mm

intended size DN	Nominal pressure, PN
	PN10～25		PN40
	structure length
	short	long
10	45	80	108
15	55	80	108
20	57	90	117
25	68	100	127
32	73	110	146
40	77	120	159
50	84	135	190
65	100	165	216
80	120	185	254
100	140
Basic series		18	7