

A21H type are used for the equipment and pipelines with such media as air, ammonia and petroleum at a working temperature less than 200°C.A21W type are used for the equipment and pipelines containing corrosive gases or liquid sat a working temperature less than 200°C.A21F type are used for the equipment and pipelines of liquefied gas and petroleum gas at a working temperature less than 80°C.They function as an over pressure protection device.

| Type | DN | do | d | Do | M | d1 | D1 | L | L1 | ≈H |
|
A21H/W/F- 16/25/40 C/P/R |
15 | 12 | 15 | 20 | M27x1.5 | G1/2" | 30 | 35 | 81 | 74 |
| 20 | 16 | 20 | 25 | M33x 1.5 | G3/4" | 34 | 40 | 87 | 81 | |
| 25 | 18 | 25 | 31 | M39x1.5 | G1" | 44 | 52 | 100 | 105 | |
|
A21Y/W- 64/100 C/P/R |
15 | 15 | 15 | 25 | M36x1.5 | G1" | 44 | 52 | 100 | 105 |
| 20 | 20 | 20 | 31 | M39x1.5 | G1" | 44 | 52 | 100 | 105 | |
| 25 | 25 | 25 | 31 | M42x1.5 | G1" | 44 | 52 | 100 | 105 |
We can design and develop according to the needs of our customers to meet the requirements of different clients.
| Type | DN | do | d | Do | M | d1 | D1 | L | L1 | ≈H |
|
A21H/W/F- 16/25/40 C/P/R |
15 | 12 | 15 | 20 | M27x1.5 | G1/2" | 30 | 35 | 81 | 74 |
| 20 | 16 | 20 | 25 | M33x 1.5 | G3/4" | 34 | 40 | 87 | 81 | |
| 25 | 18 | 25 | 31 | M39x1.5 | G1" | 44 | 52 | 100 | 105 | |
|
A21Y/W- 64/100 C/P/R |
15 | 15 | 15 | 25 | M36x1.5 | G1" | 44 | 52 | 100 | 105 |
| 20 | 20 | 20 | 31 | M39x1.5 | G1" | 44 | 52 | 100 | 105 | |
| 25 | 25 | 25 | 31 | M42x1.5 | G1" | 44 | 52 | 100 | 105 |
Vatten Valve Group, a globally renowned industrial automation valve enterprise originating from Saarland, Germany, specializes in the research, development, and manufacturing of core products such as automatic control ball valves, butterfly valves, and regulating valves. Spring loaded low lift male thread safety valve Suppliers and Spring loaded low lift male thread safety valve Factory. Leveraging our exceptional technological expertise, we deliver innovative valve solutions and professional technical support to critical industries including energy, chemical, water treatment, pharmaceutical, and food processing.
The Group operates four state-of-the-art manufacturing bases strategically located in Shanghai, Tianjin, Lishui, and Jiaxing, China. To better serve international markets, we have established branch offices in key strategic locations including the United Kingdom, Turkey, Belarus, Saudi Arabia, and Indonesia. The establishment of our Indonesian office significantly enhances our service capabilities in the Southeast Asian market, ensuring timely and efficient technical support and services for local partners and clients.
Rooted in the German tradition of precision manufacturing, Vatten Valve maintains its focus on automatic control valves while strictly adhering to international quality standards. We are committed to continuous innovation, providing customers with superior performance products, Spring loaded low lift male thread safety valve Wholesale, professional technical support, and comprehensive fluid control solutions, empowering them to address complex industrial fluid control challenges.
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