Micro-Lift Threaded Connection Safety Valve with Wrench

• Customization: Available
• Media: Oil
• Certification: CCC, ISO, CE
• Model NO.: HZA
• Temperature: Ordinary Temperature
• Connection: Thread
• Pressure: Non-Ajustable
• Closed: Closed
• Structure: Spring
• Material: Cast Iron
• Transport Package: Plywood Case
• Specification: DN15-DN300
• Trademark: HUIZHENG
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000pieces/Year

Product Description

Product Description
The safety valve is a special valve whose opening and closing parts are normally closed under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. . Safety valves belong to the category of automatic valves, mainly used in boilers, pressure vessels and pipelines. The control pressure does not exceed the specified value, which plays an important role in protecting personal safety and equipment operation.

Structural features of spring micro-open closed safety valve:
1. Adjusting nut: adjust the compression of the spring by adjusting the adjusting nut, so that the valve can easily and quickly obtain the accurate setting pressure.

2. The spring micro-opening safety valve has the characteristics of simple structure, good sealing performance, accurate opening pressure, large discharge capacity, small return pressure and convenient adjustment.

3. Back pressure adjustment sleeve: By adjusting the back pressure adjustment sleeve, an appropriate return pressure difference can be obtained. When increasing, the valve back pressure is reduced. When lowering, the valve back pressure is increased.

4. Nozzle type valve seat: The valve seat is a Vivare nozzle type valve seat. When steam flows through the outlet of the valve seat, it reaches the speed of sound. The discharge coefficient is large. The sealing surface of the valve seat is overlaid with cobalt-chromium-tungsten carbide, which is wear-resistant and impact-resistant. Eclipse, long life.

5. Thermoelastic valve disc: The valve disc is designed as a thermoelastic structure, which uses its slight deformation under the medium pressure to improve the sealing ability and overcome the front leakage phenomenon of the safety valve when the pressure is close to the set pressure under the medium pressure. The sealing surface of the disc adopts advanced laser quenching technology to improve the hardness, wear resistance and impact resistance.

Type	Nominal diameter	do	d	M	D	K	Z-ød	b	d1	M1	D1	K1	Z1-ød1	b1	L	L1	≈H
A42H-160	15	8	20	M24×2	95	60	3-18	20	/	M33×2	36	/	/	/	50	80	85
	20	10	25	M27×2	95	60	3-18	20	/	M33×2	48	/	/	/	50	80	85
	25	12	28	M33×2	105	68	3-18	20	/	M33×2	48	/	/	/	50	80	85
A42H-160	10	8	18	M24×2	95	60	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	15	8	20	M24×2	95	60	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	20	10	27	M33×2	105	68	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	25	12	28	M33×2	105	68	3-18	20	50	M64×3	165	115	6-26	32	130	135	285
	32	12.14.16	37	M42×2	115	80	4-18	22	50	M64×3	165	115	6-26	32	130	135	285
	40	20	47	M52×2	165	115	6-26	28	65	M80×3	200	145	6-29	40	165	165	350
	50	25	58	M64×3	165	115	6-26	32	80	M100×3	225	170	6-33	80	165	165	380
A42H-320	10	8	18	M24×2	95	60	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	15	8	27	M33×2	105	68	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	20	10	30	M36×2	110	75	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	25	12	35	M42×2	115	80	4-18	22	50	M64×3	165	115	6-26	32	130	135	285
	32	12.14.16	41	M48×2	135	95	4-22	25	50	M64×3	165	115	6-26	32	130	135	285
	40	20	58	M64×2	165	115	6-26	32	65	M80×3	200	145	6-29	40	165	115	350
	50	25	70	M80×2	200	145	6-29	40	80	M100×3	225	170	6-33	50	165	165	380

 

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