Factory price stainless steel lift check valve with PN16 working pressure and flange connection, designed for piping system to prevent backflow of water, oil and gas. 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6" or 8" (DN25-DN200) check valve can be chosen according to your need.
Specifications
- Model: ATO-H41W
- Type: Check Valve
- Body: Stainless Steel 304
- Size: 1/2 inch to 8 inch (DN15-DN200)
- Pressure: PN16, CLASS 150 10K
- Connection Method: Flange
- Temperature: -20~180℃
Dimension (Unit: mm)
DN |
INCH |
L |
D |
D2 |
D1 |
b |
n-φd1 |
H |
15 |
1/2" |
130 |
15 |
45 |
65 |
14 |
4-14 |
65 |
20 |
3/4" |
150 |
20 |
55 |
75 |
14 |
4-14 |
68 |
25 |
1" |
160 |
25 |
65 |
85 |
14 |
4-14 |
73 |
32 |
1-1/4" |
180 |
32 |
78 |
100 |
16 |
4-18 |
78 |
40 |
1-1/2" |
200 |
40 |
85 |
110 |
16 |
4-18 |
85 |
50 |
2" |
230 |
50 |
100 |
125 |
16 |
4-18 |
103 |
65 |
2-1/2" |
290 |
65 |
120 |
145 |
18 |
4-18 |
117 |
80 |
3" |
310 |
80 |
135 |
160 |
20 |
4-18 |
132 |
100 |
4" |
350 |
100 |
155 |
180 |
20 |
4-18 |
147 |
125 |
5" |
400 |
125 |
185 |
210 |
22 |
4-18 |
162 |
150 |
6" |
480 |
150 |
210 |
240 |
22 |
8-22 |
188 |
200 |
8" |
600 |
200 |
295 |
295 |
24 |
12-22 |
222 |
Material List
No. |
Parts |
Material |
1 |
Body |
WCB+13Cr |
304 |
304M |
2 |
Disc |
WCB+13Cr |
304 |
304M |
3 |
Gasket |
PTFE/304+GRAPHITE |
4 |
Bonnet |
WCB |
304 |
304M |
5 |
Bolt |
35CrMo |
304 |
304M |
6 |
Nut |
45 |
304 |
304M |
Tips: What is a lift check valve?
A lift check valve is a type of non-return valve used to prevent backflow in a pipeline. It operates by using the pressure of the fluid to lift a disc or piston, allowing fluid to flow in one direction. When the fluid flow stops or reverses, gravity and the reverse pressure cause the disc to lower back onto its seat, effectively sealing the valve and preventing backflow.
Lift check valves are typically used in horizontal pipelines and are suitable for high-pressure applications. They are often made of durable materials like stainless steel or brass and can be used with various fluids, including water, oil, and gas. The design of the lift check valve ensures minimal pressure drop during normal flow, making it efficient for systems where maintaining pressure is important.
These valves are commonly used in industries such as oil and gas, water treatment, and chemical processing, where reliable prevention of backflow is critical to system integrity and safety. They are known for their durability, ease of maintenance, and ability to function effectively in high-pressure environments.