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A47H type with a wrench spring micro -type safety valve structure brief
1, spring micro-type safety valve has the advantages of simple structure, good sealing performance, opening pressure is accurate, discharge capacity, back to the seat pressure is small, easy to adjust and so on.
2, nozzle-type valve seat: seat for the seat nozzle valve seat, the steam flow through the seat outlet to reach the speed of sound, emission factor, seat sealing surface surfacing Cobalt Chromium tungsten carbide wear-resistant impact Erosion, long life.
3, Thermo-elastic disc: The disc is designed as a thermo-elastic structure, using its slight deformation under medium pressure to improve the sealing ability and overcome the pre-vent phenomenon when the safety valve approaches the setting pressure under medium pressure. Valve sealing surface using advanced laser quenching technology to improve the hardness, wear resistance, impact resistance.
4, adjusting nut: By adjusting the adjusting nut, adjust the amount of spring compression, so that the valve can be very convenient, very quickly get accurate setting pressure.
5, back pressure adjustment sets: adjust valve back pressure auxiliary agencies, through the back pressure adjustment sleeve adjustment, access to the appropriate back seat pressure. Increase the valve back pressure to reduce. Lower the valve back pressure.

A47H type with a wrench spring-type safety valve installation instructions
1, the safety valve must be mounted vertically, and the best direct installation in the container or pipe joints. Connector diameter should not be less than the safety valve inlet diameter.
2, the safety valve outlet must be fitted with appropriate expansion joints to prevent the thermal expansion of the discharge pipe to the safety valve to bring undue thermal stress. The discharge pipe diameter should be larger than the valve outlet diameter, the length as short as possible to avoid turning. The discharge pipe and expansion joint weight should not act on the safety valve, should be fixed in the building. The distance between the centerline of the discharge pipe and the centerline of the valve body should be as short as possible. For each safety valve should be installed separately discharge pipe.
3, muffler exit to have enough area to prevent back pressure affect the discharge capacity of the valve.

A47H type wrench spring micro - Kai safety valve main parts and materials

NO.	Part Name	material
1	Body	WCB
2	Seat	ZG2Cr13
3	Adjustment ring	ZG2Cr13
4	Disc	2Cr13
5	Guide sleeve	2Cr13
6	cap	ZG230-450
7	spring	50CrVA
8	Valve stem	2Cr13
9	wrench	ZG200-400
10	Adjust the screw	45
11	Protective cover	ZG200-400
	Sealing surface material	"H" surfacing D507, "Y" surfacing Co-based cemented carbide

A47H -type spring with a wrench spring-type safety valve main dimensions

model	Nominal diameter	do	D	K	g	g1	b	f	f1	Z-? D	DN	D1	K1	g2	g	b1	f	f1	Z1-d1	L	L1	≈H
A47H-16C	20	15	105	75	/	55	16	2	/	4-14	20	105	75	55	/	16	2	/	4-14	100	85	270
	25	20	115	85	/	65	16	2	/	4-14	25	115	85	65	/	16	2	/	4-14	100	85	270
	32	25	140	100	/	78	18	2	/	4-18	32	140	100	78	/	18	2	/	4-18	115	100	312
	40	32	150	110	/	85	18	3	/	4-18	40	150	110	85	/	18	3	/	4-18	120	110	320
	50	40	165	125	/	100	20	3	/	4-18	50	165	125	100	/	20	3	/	4-18	135	120	390
	65	50	185	145	/	120	20	3	/	4-18	65	185	145	120	/	20	3	/	4-18	140	130	395
	80	65	200	160	/	135	20	3	/	8-18	80	200	160	135	/	20	3	/	8-18	160	135	400
	100	80	220	180	/	155	22	3	/	8-18	100	220	180	155	/	22	3	/	8-18	170	160	600
	125	100	250	210	/	185	22	3	/	8-18	125	250	210	185	/	22	3	/	8-18	190	190	620
	150	125	285	240	/	210	24	3	/	8-23	150	285	240	210	/	24	3	/	8-23	205	195	625
	200	150	340	295	/	265	26	3	/	12-23	200	340	295	265	/	26	3	/	12-23	240	230	798
	250	200	405	355	/	320	30	3	/	12-26	250	405	355	320	/	30	3	/	12-26	350	320	981
	300	250	460	410	/	375	30	4	/	12-26	300	460	410	375	/	30	4	/	12-26	350	320	1005
A47H-25	20	15	105	75	/	55	16	2	/	4-14	20	105	75	55	/	16	2	/	4-14	100	85	270
	25	20	115	85	/	65	16	2	/	4-14	25	115	85	65	/	16	2	/	4-14	100	85	270
	32	25	140	100	/	78	18	2	/	4-18	32	140	100	78	/	18	2	/	4-18	115	100	312
	40	32	150	110	/	85	18	3	/	4-18	40	150	110	85	/	18	3	/	4-18	120	110	320
	50	40	165	125	/	100	20	3	/	4-18	50	165	125	100	/	20	3	/	4-18	135	120	390
	65	50	185	145	/	120	22	3	/	8-18	65	185	145	120	/	20	3	/	4-18	140	130	395
	80	65	200	160	/	135	24	3	/	8-18	80	200	160	135	/	20	3	/	8-18	160	135	400
	100	80	230	190	/	160	24	3	/	8-23	100	220	180	155	/	20	3	/	8-18	170	160	600
	125	100	270	220	/	188	28	3	/	8-26	125	250	210	185	/	22	3	/	8-18	190	190	620
	150	125	300	250	/	218	30	3	/	8-26	150	285	240	210	/	24	3	/	8-23	205	195	625
	200	150	360	310	/	278	34	3	/	12-26	200	340	295	265	/	26	3	/	12-23	240	230	798
	250	200	425	370	/	332	36	3	/	12-30	250	405	355	320	/	30	3	/	12-26	350	320	981
	300	250	485	430	/	390	40	4	/	16-30	300	460	410	375	/	30	4	/	12-26	350	320	1005
A47H-40	20	15	105	75	51	55	16	2	4	4-14	20	105	75	55	/	16	2	/	4-14	100	85	270
	25	20	115	85	58	65	16	2	4	4-14	25	115	85	65	/	16	2	/	4-14	100	85	270
	32	25	140	100	66	78	18	2	4	4-18	32	140	100	78	/	18	2	/	4-18	115	100	312
	40	32	150	110	76	85	18	3	4	4-18	40	150	110	85	/	18	3	/	4-18	120	110	320
	50	40	165	125	88	100	20	3	4	4-18	50	165	125	100	/	20	3	/	4-18	135	120	390
	65	50	185	145	110	120	22	3	4	8-18	65	185	145	120	/	20	3	/	4-18	140	130	395
	80	65	200	160	121	135	22	3	4	8-18	80	200	160	135	/	20	3	/	8-18	160	135	400
	100	80	235	190	150	160	24	3	4.5	8-23	100	220	180	155	/	22	3	/	8-18	170	160	600
	125	100	270	220	176	188	28	3	4.5	8-26	125	250	210	185	/	22	3	/	8-18	190	190	620
	150	125	300	250	204	218	30	3	4.5	8-26	150	285	240	210	/	24	3	/	8-23	205	195	625
	200	150	375	320	260	282	38	3	4.5	12-30	200	340	295	265	/	26	3	/	12-23	240	230	798
	250	200	450	385	313	345	42	3	4.5	12-34	250	405	355	320	/	30	3	/	12-26	350	320	981
	300	250	515	450	364	408	46	4	4.5	16-34	300	460	410	375	/	30	4	/	12-26	350	320	1005
A47H-64 A47Y-64	20	15	130	90	51	68	20	2	4	4-18	20	105	75	55	51	16	2	4	4-14	100	95	301
	25	20	140	100	58	78	22	2	4	4-18	25	115	85	65	58	16	2	4	4-14	100	95	301
	32	25	155	110	66	82	24	2	4	4-23	32	140	100	78	66	18	2	4	4-18	115	105	312
	40	32	170	125	76	95	24	3	4	4-23	40	150	110	85	76	18	3	4	4-18	135	115	366
	50	40	180	135	88	105	26	3	4	4-23	50	165	125	100	88	20	3	4	4-18	160	125	396
	65	50	205	160	110	130	28	3	4	8-23	65	185	145	120	110	22	3	4	8-18	175	160	570
	80	65	215	170	121	140	30	3	4	8-23	80	200	160	135	121	22	3	4	8-18	175	160	565
	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	597
	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	738
A47H-100 A47Y-100	20	15	130	90	51	68	22	2	4	4-18	20	105	75	55	51	16	2	4	4-14	100	95	301
	25	20	140	100	58	78	24	2	4	4-18	25	115	85	65	58	16	2	4	4-14	100	95	301
	32	25	155	110	66	82	24	2	4	4-23	32	140	100	78	66	18	2	4	4-18	115	105	312
	40	32	170	125	76	95	26	3	4	4-23	40	150	110	85	76	18	3	4	4-18	135	115	366
	50	40	195	145	88	112	28	3	4	4-26	50	165	125	100	88	20	3	4	4-18	160	125	396
	65	50	220	170	110	138	32	3	4	8-26	65	185	145	120	110	22	3	4	8-18	175	160	570
	80	65	230	180	121	148	34	3	4	8-26	80	200	160	135	121	22	3	4	8-18	175	160	565
	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	597
	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	738

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