ZSH Shanghai Valve Manufzcturing Co.,LTD.

Home > Products > Relief valve > Micro Kai type boiler safety valveA41H

Description Material Performance Product Size Specifications

A4 is a kind of protective device for overpressure protection of non-toxic, harmless and non-flammable and explosive liquid medium, such as pipes and containers. This type of safety valve adopts spring direct loading type, flange connection and overall closed structure.

Note: parameters are for reference only, or incomplete. Valves can be selected according to the requirements of different pressure, material, diameter, driving mode. Please contact us by phone or online.

NO	Part name	A41H-C/KA41Y-CMaterial Science	A41Y-P/KA41Y-PMaterial Science	A41Y-R/KA41Y-RMaterial Science
1	valve body	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
2	valve seat	ZG2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
3	Adjusting ring	ZG2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
4	Valve	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
5	Guide sleeve	ZG2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
6	Valve cover	ZG230-450	ZG230-450	ZG230-450
7	Spring	50CrVA	50CrVACoated fluorine plastics	50CrVACoated fluorine plastics
8	The stem	2Cr13	2Cr13	1Cr18Ni12Mo2Ti
9	Adjusting screw	45	2Cr13	2Cr13
10	Protective cover	ZG200-400	ZG200-400	ZG200-400
	Sealing surface material	SurfacingD507	Surfacing Co based cemented carbide

1 smaller displacement, saving energy
2 planar structure of the valve and valve seat is easy to repair and re processing
3 setting pressure deviation is small, up to + 3%
4 selection of high quality spring steel, to ensure the life and stability of the spring

Model	Nominal diameter	do	D	K	g	g1	b	f	f1	Z-ød	DN''	D1	K1	g2	g''	b1	f''	f1''	Z1-ød1	L	L1	≈H
A41H-16C A41Y-16P A41Y-16R KA41Y-16C KA41Y-16P	20	15	105	75		55	16	2		4-14	20	105	75	55		16	2		4-14	100	85	276
	25	20	115	85		65	16	2		4-14	25	115	85	65		16	2		4-14	100	85	276
	32	25	140	100		78	18	2		4-18	32	140	100	78		18	2		4-18	115	100	285
	40	32	150	110		85	18	3		4-18	40	150	110	85		18	3		4-18	120	110	292
	50	40	165	125		100	20	3		4-18	50	165	125	100		20	3		4-18	135	120	370
	65	50	185	145		120	20	3		4-18	65	185	145	120		20	3		4-18	140	130	375
	80	65	200	160		135	20	3		8-18	80	200	160	135		20	3		8-18	160	135	373
	100	80	220	180		155	22	3		8-18	100	220	180	155		22	3		8-18	170	160	513
	125	100	250	210		185	22	3		8-18	125	250	210	185		22	3		8-18	190	190	560
	150	125	285	240		210	24	3		8-23	150	285	240	210		24	3		8-23	205	195	570
	200	150	340	295		265	26	3		12-23	200	340	295	265		26	3		12-23	240	230	717
	250	200	405	355		320	30	3		12-26	250	405	355	320		30	3		12-26	350	320	940
	300	250	460	410		375	30	4		12-26	300	460	410	375		30	4		12-26	350	320	980
A41H-25 A41Y-25P A41Y-25R KA41Y-25 KA41Y-25P	20	15	105	75		55	16	2		4-14	20	105	75	55		16	2		4-14	100	85	276
	25	20	115	85		65	16	2		4-14	25	115	85	65		16	2		4-14	100	85	276
	32	25	140	100		78	18	2		4-18	32	140	100	78		18	2		4-18	115	100	285
	40	32	150	110		85	18	3		4-18	40	150	110	85		18	3		4-18	120	110	292
	50	40	165	125		100	20	3		4-18	50	165	125	100		20	3		4-18	135	120	370
	65	50	185	145		120	22	3		8-18	65	185	145	120		20	3		4-18	140	130	375
	80	65	200	160		135	24	3		8-18	80	200	160	135		20	3		8-18	160	135	373
	100	80	230	190		160	24	3		8-23	100	220	180	155		20	3		8-18	170	160	513
	125	100	270	220		188	28	3		8-26	125	250	210	185		22	3		8-18	190	190	560
	150	125	300	250		218	30	3		8-26	150	285	240	210		24	3		8-23	205	195	570
	200	150	360	310		278	34	3		12-26	200	340	295	265		26	3		12-23	240	230	717
	250	200	425	370		332	36	3		12-30	250	405	355	320		30	3		12-26	350	320	940
	300	250	485	430		390	40	4		16-30	300	460	410	375		30	4		12-26	350	320	980
A41H-40 A41Y-40P A41Y-40R KA41Y-40 KA41Y-40P	20	15	105	75	51	55	16	2	4	4-14	20	105	75	55		16	2		4-14	100	85	276
	25	20	115	85	58	65	16	2	4	4-14	25	115	85	65		16	2		4-14	100	85	276
	32	25	140	100	66	78	18	2	4	4-18	32	140	100	78		18	2		4-18	115	100	285
	40	32	150	110	76	85	18	3	4	4-18	40	150	110	85		18	3		4-18	120	110	292
	50	40	165	125	88	100	20	3	4	4-18	50	165	125	100		20	3		4-18	135	120	370
	65	50	185	145	110	120	22	3	4	8-18	65	185	145	120		20	3		4-18	140	130	375
	80	65	200	160	121	135	22	3	4	8-18	80	200	160	135		20	3		8-18	160	135	373
	100	80	235	190	150	160	24	3	4.5	8-23	100	220	180	155		22	3		8-18	170	160	513
	125	100	270	220	176	188	28	3	4.5	8-26	125	250	210	185		22	3		8-18	190	190	560
	150	125	300	250	204	218	30	3	4.5	8-26	150	285	240	210		24	3		8-23	205	195	570
	200	150	375	320	260	282	38	3	4.5	12-30	200	340	295	265		26	3		12-23	240	230	717
	250	200	450	385	313	345	42	3	4.5	12-34	250	405	355	320		30	3		12-26	350	320	940
	300	250	515	450	364	408	46	4	4.5	16-34	300	460	410	375		30	4		12-26	350	320	980
A41H-64 A41Y-64 A41Y-64P A41Y-64R	20	15	130	90	51	68	20	2	4	4-18	20	105	75	55	51	16	2	4	4-14	100	95	268
	25	20	140	100	58	78	22	2	4	4-18	25	115	85	65	58	16	2	4	4-14	100	95	268
	32	25	155	110	66	82	24	2	4	4-23	32	140	100	78	66	18	2	4	4-18	115	105	279
	40	32	170	125	76	95	24	3	4	4-23	40	150	110	85	76	18	3	4	4-18	135	115	330
	50	40	180	135	88	105	26	3	4	4-23	50	165	125	100	88	20	3	4	4-18	160	125	360
	65	50	205	160	110	130	28	3	4	8-23	65	185	145	120	110	22	3	4	8-18	175	160	503
	80	65	215	170	121	140	30	3	4	8-23	80	200	160	135	121	22	3	4	8-18	175	160	498
	100	80	250	200	150	168	32	3	4.5	8-26	100	235	190	160	150	24	3	4.5	8-23	190	180	530
	150	100	345	280	204	240	38	3	4.5	8-34	150	300	250	218	204	30	3	4.5	8-26	280	260	657
A41H-100 A41Y-100 A41Y-100P A41Y-100R	20	15	130	90	51	68	22	2	4	4-18	20	105	75	55	51	16	2	4	4-14	100	95	268
	25	20	140	100	58	78	24	2	4	4-18	25	115	85	65	58	16	2	4	4-14	100	95	268
	32	25	155	110	66	82	24	2	4	4-23	32	140	100	78	66	18	2	4	4-18	115	105	279
	40	32	170	125	76	95	26	3	4	4-23	40	150	110	85	76	18	3	4	4-18	135	115	330
	50	40	195	145	88	112	28	3	4	4-26	50	165	125	100	88	20	3	4	4-18	160	125	360
	65	50	220	170	110	138	32	3	4	8-26	65	185	145	120	110	22	3	4	8-18	175	160	503
	80	65	230	180	121	148	34	3	4	8-26	80	200	160	135	121	22	3	4	8-18	175	160	498
	100	80	265	210	150	172	38	3	4.5	8-30	100	235	190	160	150	24	3	4.5	8-23	190	180	530
	150	100	355	290	204	250	46	3	4.5	12-34	150	300	250	218	204	30	3	4.5	8-26	280	260	657

Design specification: GB/T 12243
Structure length: GB/T 12221
Flange connection: JB/T 79
Test and inspection: GB/T 12242
Product identification: GB/T 12220

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