Home > Stainless Steel Diaphragm Valves
MERIH STAINLESS, located in Istanbul, Turkey, stands out as a trusted manufacturer and supplier of top-notch Stainless Steel Diaphragm Valves. Built for durability, precision, and exceptional sealing performance, these valves utilize a flexible diaphragm to manage fluid flow and prevent leaks. MERIH STAINLESS guarantees that each valve adheres to international standards for dimensional accuracy, corrosion resistance, and mechanical strength. They find their place in various industries, including chemical, pharmaceutical, food processing, water treatment, and petrochemicals, offering excellent hygiene, easy cleaning, and reliable long-term operation. These valves are particularly well-suited for corrosive, abrasive, and high-purity applications where leak-proof performance is essential.
The Stainless Steel Diaphragm Valves from MERIH STAINLESS are crafted from high-quality stainless steel alloys, incorporating iron, chromium, nickel, and trace elements to boost corrosion resistance, toughness, and longevity. Their mechanical properties feature a tensile strength ranging from 500 to 750 MPa and a yield strength between 250 and 500 MPa, along with outstanding wear resistance for extended service life. The flexible diaphragm is usually made from elastomers or PTFE, providing excellent sealing capabilities. These valves are designed to resist pitting, oxidation, and chemical damage, while precision engineering ensures smooth operation, leak-free performance, and structural integrity under high-pressure and high-temperature conditions.
| Body Material | Stainless Steel |
| Connection | Clamp / Weld |
| Operated | Plastic Handwheel |
| Seal | PTFE + EPDM (Double Layer) |
| Standard | 3A / BPE / DIN |
| Available Size | DN25 ~ DN65 / 1″ ~ 2 1/2″ |
| Structure | T Type |
| Max.Working Pressure | 10 Bar |
| Max. Working Temp. | 120 ℃ |
| Material | C | Si | Mn | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|---|
| Stainless Steel | 0.080 max | 0.75 max | 2.00 max | 0.045 max | 0.030 max | 18.00-20.00 | 8.00-10.50 | 0.100 max |
| Material | Yield Strength | Tensile Strength | Elongation (%) | Reduction of Area (%) | Hardness Max | |
|---|---|---|---|---|---|---|
| Min (Mpa) | Min (Mpa) | Min | Min (50mm) | HB | HR B | |
| Stainless Steel | 170 | 458 | 30 | 50 | 201* | 92* |
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The stainless steel air to open actuated diaphragm valve, available in sizes from 1″ to 6″, features high corrosion resistance. Ideal for automated control, it ensures reliable flow regulation in various applications.
Stainless steel globe control valves, diaphragm operated, come in sizes from 1″ to 12″. These valves offer excellent corrosion resistance and precise flow control, suitable for high-pressure and temperature applications.
Wire diaphragm valves in stainless steel, available in sizes from 1″ to 6″, provide robust corrosion resistance and reliable sealing. They are ideal for handling slurries and aggressive fluids in industrial processes.
Stainless steel flow control valves, ranging from 1″ to 8″, offer excellent corrosion resistance and precision. Suitable for managing fluid flow in a variety of industrial and chemical applications.
Flanged diaphragm valves in stainless steel, available in sizes from 2″ to 12″, ensure high corrosion resistance and secure connections. They are ideal for precise flow control in demanding environments.
The stainless steel straightway diaphragm valve, sized from 1″ to 6″, features excellent corrosion resistance. Its straightway design facilitates efficient flow control and is suitable for various industrial applications.
We are dedicated to delivering the highest quality Stainless Steel Diaphragm Valves to our clients. To ensure their superior quality, these valves undergo a series of rigorous testing processes before being dispatched. The tests include hardness testing, chemical analysis using spectro analysis, positive material identification (PMI) testing, flattening testing, micro and macro tests, pitting resistance testing, flaring testing and intergranular corrosion (IGC) testing. In addition to these tests, we also offer third-party inspection certificates to further assure our clients of the excellence and suitability of our Stainless Steel Diaphragm Valves for diverse applications.
Stainless Steel Diaphragm Valves are widely utilized in industries that require precise flow control and absolute sealing. They play a crucial role in pharmaceutical and biotech processes, chemical and petrochemical facilities, food and beverage production, water treatment systems, and semiconductor manufacturing. These valves excel at handling corrosive, abrasive, and viscous fluids, making them perfect for high-purity applications that demand contamination-free flow. Additionally, diaphragm valves are designed to meet the rigorous demands of various industrial processes, ensuring reliability and efficiency in every application.







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