A28h Full Open External Thread Safety Valve

• Media: Water Vapor Oils
• Certification: ISO
• Temperature: Ordinary Temperature
• Connection: Thread
• Pressure: Adjustable
• Closed: Semi-Closed
• Model NO.: A28H
• Structure: Spring
• Material: Stainless Steel
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: xc
• Origin: China
• HS Code: 84814000
• Production Capacity: 10000

Product Description

A28H thread safety valve is suitable for equipment or pipelines with air, steam, water, nitrogen and hydrogen mixture and other media with operating temperature ≤200ºC. A28Y-P/10R8 thread safety valve is suitable for equipment or pipelines with corrosive media with operating temperature ≤200ºC as an overpressure protection device

Safety valve model: A28H	Nominal diameter of safety valve: 15MM-80MM	The operating pressure of the safety valve: 1.6MPA-4.0MPA
Connection mode of safety valve: external thread connection	Safety valve form: spring type	The main function of the safety valve: pressure relief protection
The medium used in the safety valve: steam	Safety valve material: cast steel. Stainless steel	Safety valve standard: mechanical ministry standard or custom non-standard

Screw safety valve main parts materials

NO.	Part name	A28H material	A28Y-P material	A28Y-R8 material
1	Valve body	HT200	ZG1Cr18Ni9Ti	CF8M
2	Valve seat	35	ZG1Cr18Ni9Ti	CF8M
3	Adjusting ring	2Cr13	1Cr18Ni9Ti	316
4	Valve clack	2Cr13	1Cr18Ni9Ti	316
5	Spring	50CrVA	50CrVA coated with fluoroplastic	50CrVA is coated with fluoroplastic
6	Stem	2Cr13	2Cr13	316
7	Adjusting the screw	45	2Cr13	316
8	Protective cover	ZG200-400	ZG200-400	CF8M
	Sealing surface material	Surfacing D507	Surfacing Co based cemented carbide

Screw safety valve dimensions and connection dimensions

Nominal diameter	Dimensions
	do	Rc	G	L	L1	H
15	10	1/2"	3/4"	37	62	189
20	12	3/4"	1"	40	65	196
25	15	1"	1 1/4"	45	72	277
32	20	1 1/4"	1 1/2"	55	85	312
40	25	1 1/2"	2. ""	67	100	322
50	32	2. ""	2 1/2"	76	112	348
65	40	2 1/2"	3"	110	135	370
80	60	3"	4"	110	145	410

Safety valve order main matters

Safety valve medium, pressure level, opening mode (full opening/micro opening) set the take-off pressure, determine the valve size, connection mode, standard maximum temperature resistance, release flow/hour, valve body material, internal valve body structure, working principle, installation instructions and other related technical data. Safety valve selection is mainly based on (take-off pressure and neat pressure flow temperature) caliber general design institute will be given, and in fact through the steam pressure, flow and take-off pressure, you can infer the size of the safety valve. Generally, it will be smaller than the caliber selected by the design institute. When the occasion is very important or the environment is more complex, please try your best to provide design drawings and detailed parameters, by our Xuan Cheng valve company experts for your review.

Related safety valve series
Spring micro-lift safety valve	Stainless steel high pressure safety valve	High pressure full lift safety valve	Spring open steam safety valve	Spring micro full lift safety valve
Liquefied gas safety valve	Double safety valve	Parallel safety return valve	Pilot operated safety valve	Spring external thread safety valve
Spring external thread micro-open safety valve	Air compressor safety valve	Steam safety valve with external thread	Welded high pressure safety valve	Safety relief valve
High temperature and high pressure relief valve	Double lever safety valve	Safety valve with radiator	Single lever safety valve	High temperature and high pressure main safety valve
Hydraulic relief valve	Stainless steel vacuum negative pressure safety valve	Spring-loaded steam safety valve	Full lift super high pressure safety valve

After-sales service commitment

For your company in Xuan Cheng valve order valve products, our factory in the after-sales service to make the following commitments:
First, our company implements three guarantees for product quality, namely: warranty, replacement, warranty;
2. After signing the contract, ensure quality, quantity and delivery on time;
Third, the company to ensure that the valve products provided to meet the contract indicators
For the technical consultation of the demander, we will provide answers at any time;
5. When delivering the equipment, the factory shall deliver the following materials to the demander: shipping list, product certificate, product sample, product instruction manual and technical data;
When receiving the letter or phone call of the user's response to the quality problem, we guarantee to reply within 24 hours to solve the problem as soon as possible.

 

Main parts materials

NO.	Part name	A27H material	A27W-P material	A27W-R material
1	Valve body	HT350	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
2	Valve seat	35	ZG1Cr18Ni9Ti	ZG1Cr18Ni9Ti
3	Adjusting ring	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
4	Valve flap	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
5	Spring	50CrVA	50CrVA coated with fluoroplastic	50CrVA is coated with fluoroplastic
6	Stem	2Cr13	2Cr13	1Cr18Ni9Ti
7	Adjusting screw	45	2Cr13	1Cr18Ni9Ti
8	Protective cover	ZG200-400	ZG200-400	1Cr18Ni9Ti
	Sealing surface material	Surfacing D507	Surfacing Co based cemented carbide

Overall dimensions and connection dimensions

Common weighing diameter	Dimensions
	do	Rc	L	L1	G	H
15	10	1/2"	40	65	1/2"	135
20	15	3/4"	45	70	3/4"	140
25	20	1"	45	76	1"	155
32	25	1 1/4"	55	85	1 1/4"	170
40	32	1 1/2"	55	85	1 1/2"	310
50	40	2. ""	67	100	2. ""	322
65	50	2 1/2"	76	112	2 1/2"	344
80	65	3"	110	135	3"	395

Ordering Essentials

Safety valve medium, pressure level, opening mode (full opening/micro opening) set the take-off pressure, determine the valve size, connection mode, standard maximum temperature resistance, release flow/hour, valve body material, internal valve body structure, working principle, installation instructions and other related technical data. Safety valve selection is mainly based on (take-off pressure and neat pressure flow temperature) caliber general design institute will be given, and in fact through the steam pressure, flow and take-off pressure, you can infer the size of the safety valve. Generally, it will be smaller than the caliber selected by the design institute. When the occasion is very important or the environment is more complex, please try your best to provide design drawings and detailed parameters, by our Xuan Cheng valve company experts for your review.

Related safety valve series
Spring micro-lift safety valve	Stainless steel high pressure safety valve	High pressure full lift safety valve	Spring open steam safety valve	Spring micro full lift safety valve
Liquefied gas safety valve	Double safety valve	Parallel safety return valve	Pilot operated safety valve	Spring external thread safety valve
Spring external thread micro-open safety valve	Air compressor safety valve	Steam safety valve with external thread	Welded high pressure safety valve	Safety relief valve
High temperature and high pressure relief valve	Double lever safety valve	Safety valve with radiator	Single lever safety valve	High temperature and high pressure main safety valve
Hydraulic relief valve	Stainless steel vacuum negative pressure safety valve	Spring-loaded steam safety valve	Full lift super high pressure safety valve

After-sales service commitment

For your company in Xuan Cheng valve order valve products, our factory in the after-sales service to make the following commitments:
First, our company implements three guarantees for product quality, namely: warranty, replacement, warranty;
2. After signing the contract, ensure quality, quantity and delivery on time;
Third, the company to ensure that the valve products provided to meet the contract indicators
For the technical consultation of the demander, we will provide answers at any time;
5. When delivering the equipment, the factory shall deliver the following materials to the demander: shipping list, product certificate, product sample, product instruction manual and technical data;
When receiving the letter or phone call of the user's response to the quality problem, we guarantee to reply within 24 hours to solve the problem as soon as possible.