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Product Series
ZH4 Sanitary Check Valve
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keywords： ZH4 Sanitary Check Valve
Sanitary valves are key equipment widely used in industries such as pharmaceuticals, biotechnology, and food processing
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Details
1、 Definition of Sanitary Valves
Sanitary valves refer to valves that meet strict hygiene requirements, and their design, manufacturing, and material selection are all based on meeting hygiene standards in industries such as food and medicine. This type of valve has the characteristics of no dead corners, easy cleaning, and corrosion resistance, ensuring the purity of the fluid during transmission.
2、 The function of sanitary valves
1. Flow control: Sanitary grade valves can accurately control the flow of fluids as needed, ensuring the stability of the production process and the quality of the product.
2. Preventing backflow: Valves can prevent fluid backflow and prevent pollutants from entering the production process.
3. Automation control: Some sanitary valves have automation control functions and can be linked with other equipment to achieve intelligent management of the production line.
3、 The role of sanitary valves in safeguarding human health
Sanitary valves, as important equipment in industries such as pharmaceuticals and food, play a crucial role in ensuring human health. Specifically, its role is reflected in the following aspects:
1. Ensure product safety: The application of sanitary valves can ensure the purity of fluids during transmission, thereby ensuring product safety.
2. Preventing cross contamination: The design of valves can prevent cross contamination between different fluids and reduce the risk of product contamination.
3. Improve production efficiency: Sanitary valves are easy to clean and maintain, which can greatly improve production efficiency and reduce production costs.
4. Reduce health risks: By precisely controlling flow and preventing backflow, sanitary valves can reduce potential risks to human health during the production process.
In short, sanitary valves play a crucial role in industries such as pharmaceuticals and food. Understanding and correctly applying sanitary valves is of great significance for ensuring product quality and human health. With the advancement of technology and the increasing demand for product safety, sanitary valves will play a more important role in the future.
Application
The check valve opens when the pressure in the lower part of the stem exceeds the pressure on the stem and the spring force.
When the pressure on the stem is balanced, the valve will close.
A higher reverse pressure acts on the stem to close it.
ZH4 sanitary check valve has two types of structure
ZH4-1 check valve adopts clamp connection, which is economical and applicable, and is widely used in food industry.
ZH4-2 check consists of thickened valve body and two-piece method, which is characterized by easy installation and disassembly.
working principle
ZH4 series check valves are used in stainless steel piping systems to prevent fluid backflow.
Correct installation position of safety valve (Fig.)
Pressure drop / capacity comparison chart
Technical parameter
Metal material | Product wetted | 304L/316L (DIN-1.4307/1.4404) forged |
Non-product wetted | 304(1.4301) | |
We can provide EN 10204 3.1B certificate. | ||
Seal material | Standard | EPDM |
Options | FPM 、NBR/PTFE、Silicone | |
All seal materials comply with FDA 177.2600. | ||
Temperature | Continuous working temperature | -20~+135℃(EPDM) |
Sterilization temperature | 150℃(max 20min) | |
Pressure | Opening pressure | ≈0.08bar |
Max working pressure | 10bar | |
Surface treatment | Internal surface | Ra≤0.8μm |
External surface | Ra≤1.6μm | |
Connection | Connection standards | Welding end: DIN 11850 series 2 |
Welding end: Inch pipe diameter standard | ||
Connection methods: welding, thread, clamp, flange | ||
Clamp - threaded
Size (mm)
| 3A | ||||
| Size | A | B | C | D |
| 1.0" 1.5" | 22.1 34.8 | 37.13 ACME 8TPI 50.65 ACME 8TPI | 46 46 | 67 67 |
| 2.0" 2.5" | 47.5 60.2 | 64.16 ACME 8TPI 77.67 ACME 8TPI | 47 50 | 68 71 |
| 3.0" 4.0" | 72.9 97.38 | 91.19 ACME 8TPI 119.25 ACME 6TPI | 51 60 | 72 72 |
| DIN | ||||
| DN25 DN32 | 26 32 | Rd52×1/6" Rd58×1/6" | 60 60 | 81 81 |
| DN40 DN50 | 38 50 | Rd65×1/6" Rd78×1/6" | 60 61 | 81 82 |
| DN65 DN80 | 66 81 | Rd95×1/6" Rd110×1/4" | 63 63 | 84 84 |
| DN100 | 100 | Rd130×1/4" | 68 | 89 |
| SMS | ||||
| 25 38 | 22.5 35.5 | RD40×1/6" RD60×1/6" | 53 58 | 74 79 |
| 51 63.5 | 48.5 60.5 | RD70×1/6" RD85×1/6" | 58 62 | 79 83 |
| 76 101.6 Min | 72.9 97.6 | RD98×1/6" RD125×1/4" | 66 72 | 83 83 |
| 101.6 Max | 97.6 | RD132×1/6" | 72 | 83 |
Clamp - welded
Size (mm)
| Inch | ||||
| Size | A | B | C | D |
| 1/2" 3/4" | 9.4 15.75 | 12.7 19.05 | 28.5 28.5 | 39.5 39.5 |
| 1.0" 1.5" | 22.1 34.8 | 25.4 38.1 | 38 38 | 59 59 |
| 2.0" 2.5" | 47.5 60.2 | 50.8 63.5 | 38 38 | 59 59 |
| 3.0" 4.0" | 72.9 97.38 | 76.2 101.6 | 42 44 | 59 55 |
| DIN | ||||
| DN20 DN25 | 20 26 | 23 29 | 28.5 38 | 39.5 59 |
| DN32 DN40 | 32 38 | 35 41 | 38 38 | 59 59 |
| DN50 DN65 | 50 66 | 53 70 | 38 38 | 59 59 |
| DN80 DN100 | 81 100 | 85 104 | 42 44 | 59 55 |
Clamp - clamp type
Size (mm)
| 3A / SMS / ISO | ||||
| Size | A | B | C | D |
| 1/2" 3/4" | 9.4 15.75 | 25.2 25.2 | 28.5 28.5 | 39.5 39.5 |
| 1.0" 1.5" | 22.1 34.8 | 50.5 50.5 | 38 38 | 59 59 |
| 2.0" 2.5" | 47.5 60.2 | 64 77.5 | 38 38 | 59 59 |
| 3.0" 4.0" | 72.9 97.38 | 91 119 | 42 44 | 59 55 |
| DIN | ||||
| DN20 DN25 | 20 26 | 34 50.5 | 28.5 38 | 39.5 59 |
| DN32 DN40 | 32 38 | 50.5 50.5 | 38 38 | 59 59 |
| DN50 DN65 | 50 66 | 64 91 | 38 38 | 59 59 |
| DN80 DN100 | 81 100 | 106 119 | 42 44 | 59 55 |
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