Spring fully opened steam safety valve

NegotiableUpdate on 12/31

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Nature of the Manufacturer: Producers

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Overview

Product Introduction of Spring Fully Open Steam Safety Valve A48Y-64/100 Spring Fully Open Steam Safety Valve produced by Zhenggang is suitable for working temperature "C type" ≤ 425 ℃; Type I "≤ 500 ℃; V-shaped "≤ 500 ℃; On steam and other medium equipment or pipelines, it plays a safety protection role in the system

Product Details

Spring fully opened steam safety valveProduct Introduction

The A48Y-64/100 spring fully opened steam safety valve produced by Zhenggang is suitable for working temperatures of "C type" ≤ 425 ℃; Type I "≤ 500 ℃; V-shaped "≤ 500 ℃; On steam and other medium equipment or pipelines,Plays a security protection role in the system. When the system pressure exceeds the specified value, the safety valve opens and releases a portion of the gas/fluid in the system into the atmosphere/pipeline, ensuring that the system pressure does not exceed the allowable value and preventing accidents due to excessive pressure.

Spring fully opened steam safety valveexecution standard

Design Specification: GB/T 12243
Structural length: GB/T 12221
Flange connection: JB/T 79
Testing and Inspection: GB/T 12242
Product identification: GB/T 12220
Supply Specification: JB/T 7928

Spring fully opened steam safety valveComponent materials

NO	Part Name	A48Y-C A44Y-C 材料	A44Y-P material	A44Y-R material
1	valve body	WCB	ZG1Cr18Ni9Ti	CF8M
2	valve seat	2Cr13	1Cr18Ni9Ti	316
3	Adjustment Circle	ZG2Cr13	ZG1Cr18Ni9Ti	0Cr18Ni12Mo2Ti
4	Recoil plate	ZG2Cr13	ZG1Cr18Ni9Ti	316
5	valve disc	2Cr13	1Cr18Ni9Ti	316
6	guide bushing	2Cr13	1Cr18Ni9Ti	0Cr18Ni12Mo2Ti
7	valve cover	ZG230-450	ZG230-450	ZG230-450
8	spring	50CrVA	50CrVA coated fluoroplastic	50CrVA coated fluoroplastic
9	valve stem	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
10	wrench	ZG200-400	ZG200-400	ZG200-400
11	Adjust the screw	45	2Cr13	2Cr13
12	protective cover	ZG200-400	ZG200-400	316
13	Sealing surface material	Welding Co based Hard Alloy

Spring fully opened steam safety valveStructure and connection dimensions

model	path	do	D	K	g	g1	b	f	f1	Z-ød	DN'	D1	K1	g3	g2	b1	f'	f1'	Z1-ød1	L	L1	≈H

A48Y-64 A44Y-64 A44Y-64P A44Y-64R	20	10	125	90	51	68	22	2	4	4-18	25	115	85	58	65	16	2	4	4-14	96	85	297
	25	16	140	100	58	78	22	2	4	4-18	32	140	100	66	78	18	2	4	4-18	110	100	310
	32	20	155	110	66	82	24	2	4	4-23	40	150	110	76	85	18	3	4	4-18	130	110	322
	40	25	170	125	76	95	24	3	4	4-23	50	165	125	88	100	20	3	4	4-18	135	120	352
	50	32	180	135	88	105	26	3	4	4-23	65	185	145	110	120	22	3	4	8-18	155	135	425
	65	40	205	160	110	130	28	3	4	8-23	80	200	160	121	135	22	3	4	8-18	175	160	570
	80	50	215	170	121	140	30	3	4	8-23	100	235	190	150	160	24	3	4.5	8-23	175	160	560
	100	65	250	200	150	168	32	3	4.5	8-26	125	270	220	176	188	28	3	4.5	8-25	195	195	690
	150	100	345	280	204	240	38	3	4.5	8-34	200	375	320	260	282	38	3	4.5	12-30	280	265	935
A48Y-100 A44Y-100 A44Y-100P A44Y-100R	20	10	125	90	51	68	22	2	4	4-18	25	115	85	58	65	16	3	4	4-14	96	85	297
	25	16	140	100	58	78	24	2	4	4-18	32	140	100	66	78	18	2	4	4-18	110	100	310
	32	20	155	110	66	82	24	2	4	4-23	40	150	110	76	85	18	2	4	4-18	130	110	322
	40	25	170	125	76	95	26	3	4	4-23	50	165	125	88	100	20	3	4	4-18	135	120	352
	50	32	195	145	88	112	28	3	4	4-26	65	185	145	110	120	22	3	4	8-18	155	135	425
	65	32	220	170	110	138	32	3	4	8-26	80	200	160	121	135	22	3	4	8-18	175	160	570
	80	40	230	180	121	148	34	3	4	8-26	100	235	190	150	160	24	3	4.5	8-23	175	160	560
	100	50	265	210	150	172	38	3	4.5	8-30	125	270	220	176	188	28	3	4.5	8-25	195	195	690
	150	80	355	290	204	250	46	3	4.5	12-34	200	375	320	260	282	38	3	4.5	12-30	28

Spring fully opened steam safety valveSteps for adjusting the set pressure
① Before the safety valve leaves the factory, its opening pressure should be adjusted one by one to the set value required by the user. If the user requests the working pressure level of the springThen adjust the factory according to the lower limit value of the pressure level as usual.
② Before installing the safety valve onto the protected equipment or before installation, the user must readjust it at the installation site to ensure the set pressure of the safety valveThe value meets the requirements.
③ Within the working pressure range indicated on the nameplate, the opening pressure can be adjusted by rotating the adjusting screw to change the compression of the spring.
④ Before rotating the adjusting screw, the inlet pressure of the valve should be reduced to below 90% of the opening pressure to prevent the valve disc from being driven to rotate when rotating the adjusting screw, which may damage the sealing surface.
⑤ To ensure accurate opening pressure values, the medium conditions during adjustment, such as medium type, temperature, etc., should be as close as possible to the actual operating conditions. When the type of medium changes, especially when the accumulated state of the medium is different (such as from liquid phase to gas phase), the opening pressure often changes. When the working temperature increases, the opening pressure generally decreases. Therefore, when adjusted at room temperature and used for high temperatures, the set pressure value at room temperature should be slightly higher than the required opening pressure value. The degree to which it is high is related to the valve structure and material selection, and should be based onShanghai Zhenggang Valve FactoryThe explanation is based on.
⑥ The conventional safety valve is used to fix the additional back pressure. When the opening pressure is adjusted after inspection (the back pressure is atmospheric pressure at this time）The setting value should be the required opening pressure value minus the additional back pressure value.

Spring fully opened steam safety valveInstallation and usage precautions
1. All types of safety valves should be installed vertically.
2. The outlet of the safety valve should be unobstructed to avoid pressure.
3. Before installation, safety valves should be specifically tested and their sealing properties checked.
4. Regular inspections should be conducted on safety valves in use

Kind reminder from Zhenggang:
Please provide detailed model, pressure, diameter, material, medium, temperature, delivery location, and delivery time when placing an order.
Zhenggang specializes in creating breathing valve products that are suitable for you. Welcome to call (☏: 400-6868-625) or visit Zhenggang's official websitehttp://www.zhengvalve.com