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A38Y-16C/25/40 A43H-16C/25/40 A37H-16C/25/40
本閥門適用于工作溫度≤350℃的蒸汽、水等介質的設備和管路上。作為超壓保護裝置。連接法蘭標準按JB/T……-94的系列1。
This safety valves are used for the equipment and pipeline of the steam, water etc. medium what the working temperature are less than 350 . Take for extra pressure protection devices.Flange connecting dimensions of comply with Standard series one of JB/T -94.
主要零部件材料 Explanation of materials for main parts
A38Y, A43H, A37H safety valve, except the three-ways style （material WCB）, the materials of other parts is the same as A47H, A48Y type spring loaded type safety valve.
A38Y A38Y Type （DN）	A48Y Relevant A48Y Type （DN）	A43Y A43Y Type （DN）	A47Y Relevant A47Y Type （DN）	A37Y A37Y Type （DN）	A47Y Relevant A47Y Type （DN）
50	322	50	322	50	322
80	502	80	502	80	652
100	652	100	802	100	802
150	1002	125	1002	125	1002
		150	1252	150	1252

A38Y、A43H、A37H型雙聯安全閥是在Y型接頭上裝設兩個同樣規格的A48Y或A47H型安全閥而構成，其公稱通徑系列指Y型接頭進口通徑，其組合情況如下表：
A38Y, A43H, A37H type twin safety valve is composed of two A48Y or A47Y type safety valves with the same specifications. Which are fixed on a Y-shaped joint. The nominal diameter is the inlet diameter of the Y-shaped joint. Here is the table to show its combination.
外形尺寸和連接尺寸 Dimensions （mm）
Type	（DN）	do	D	K	g	g1	b	f	f1	Z- d	DN'	D1	k1	g2	b1	f'	Z1- d1	L	L1	L0	h	H
A37H-16C A43H-16C	50	25	165	125	100		20	3		4-18	32	140	100	78	18	2	4-18	115	110	165	235	547
	80	40	200	160	135		20	3		8-18	50	165	125	100	16	3	4-18	135	120	190	285	795
	80	50	200	160	135		20	3		8-18	65	185	145	120	18	3	4-18	140	130	205	310	835
	100	65	220	180	155		22	3		8-18	80	200	160	135	20	3	8-18	160	135	255	355	890
	125	80	250	210	185		22	3		8-18	100	220	180	155	22	3	8-18	170	160	260	410	1,170
	150	100	285	240	210		24	3		8-23	125	250	210	185	22	3	8-18	190	190	275	430	1,240
A37H-25 A43H-25	50	25	165	125	100		20	3		4-18	32	140	100	78	18	2	4-18	115	110	165	235	547
	80	40	200	160	135		22	3		8-18	50	165	125	100	16	3	4-18	135	120	190	285	795
	80	50	200	160	135		22	3		8-18	65	185	145	120	18	3	4-18	140	130	205	310	835
	100	65	230	190	160		24	3		8-23	80	200	160	135	20	3	8-18	160	135	255	355	890
	125	80	270	220	188		28	3		8-26	100	220	180	155	22	3	8-18	170	160	260	410	1,170
	150	100	300	250	218		30	3		8-26	125	250	210	185	22	3	8-18	190	190	275	430	1,240
A37H-40 A43H-40	50	25	165	125	100	88	20	3	4	4-18	32	140	100	78	16	2	4-18	115	110	165	235	547
	80	40	200	160	135	121	22	3	4	8-18	50	165	125	100	16	3	4-18	135	120	190	285	795
	80	50	200	160	135	121	22	3	4	8-18	65	185	145	120	18	3	4-18	140	130	205	310	835
	100	65	235	190	160	150	24	3	4.5	8-23	80	200	160	135	20	3	8-18	160	135	255	355	890
	125	80	270	220	188	176	28	3	4.5	8-26	100	220	180	155	22	3	8-18	170	160	260	410	1,170
	150	100	300	250	218	204	30	3	4.5	8-26	125	250	210	185	22	3	8-18	190	190	275	430	1,240
A38Y-16C	50	20	165	125	100		20	3		4-18	40	150	110	85	16	3	4-18	198	100	165	225	636
	80	32	200	160	135		20	3		8-18	65	185	145	120	20	3	4-18	230	120	190	265	817
	100	40	220	180	155		22	3		8-18	80	200	160	135	20	3	8-18	293	140	265	265	921
	150	80	285	240	210		24	3		8-23	125	250	210	185	22	3	8-18	320	175	250	420	1,097
A38Y-25	50	20	165	125	100		20	3		4-18	40	150	110	85	16	3	4-18	198	100	165	225	636
	80	32	200	160	135		22	3		8-18	65	185	145	120	20	3	4-18	230	120	190	265	817
	100	40	230	190	160		24	3		8-23	80	200	160	135	20	3	8-18	293	140	265	265	921
	150	80	300	250	218		30	3		8-26	125	250	210	185	22	3	8-18	320	175	250	420	1,097
A38Y-40	50	20	165	125	100	88	20	3	4	4-18	40	150	110	85	16	3	4-18	198	100	165	225	636
	80	32	200	160	135	121	22	3	4	8-18	65	185	145	120	20	3	4-18	230	120	190	265	817
	100	40	235	190	160	150	24	3	4.5	8-23	80	200	160	135	20	3	8-18	293	140	265	265	921
	150	80	300	250	218	204	30	3	4.5	8-26	125	250	210	185	22	3	8-18	320	175	250	420	1,097