1/2" Manual Diaphragm Valve - 316L Sanitary/Aseptic Stainless Steel

Sanitary Diaphragm Valves for High-Purity Process Piping Applications

• 3A Manual Diaphragm Valves
• 316L Stainless Steel for Fluid Contact
• Working Pressure 10 Bar
• EPDM Sealing: -20℃ ~ 135℃ (150℃ Max 20min)
• VMQ Sealing Optional

The 1/2" sanitary manual diaphragm valve has a completely enclosed structure that removes any risk of contamination that might occur from contact with substances from outside. It has various types of connections including Tri-Clover/Clamp, butt weld, and threaded connections. The valve has manufacturing resources available globally in the USA and China. It is well suited for applications that require the use of compact valves for the effective control of sterile fluid.

Product Overview

Among the Eagle diaphragm valves available, the Eagle 3A manual diaphragm valve, which is available in sizes of 1/2" or equivalent, is the smallest of all and is designed specifically for use in laboratories, small analysis equipment as well as low flow, sterile transfer lines. The closed body of the valve is designed in such way that only stainless steel 316L body and the diaphragm come in contact with the process medium, without the possibility of leakage from stem packing or infiltration of outside contaminants. In this valve, working with the valve by using a hand wheel leads to the functionality of either of the parts, thus allowing the operator to get instantaneous feedback, without employing complicated control mechanisms and systems. This is the ideal size for pilot plants, laboratory equipment, and utility connection applications.

Technical Specifications

• Size: 1/2" (Other sizes available: 3/4" to 2")
• Body Material (Fluid Contact): 316L Stainless Steel
• Working Pressure: 10 Bar (145 PSI)
• EPDM Sealing Temperature: -20℃ to 135℃ (150℃ Max for 20 minutes)
• Optional Sealing: VMQ (Silicone)
• Certification: 3A Sanitary Standard, ASME BPE Compliant
• Connection Type: Tri-Clamp, Butt Weld, or Thread
• Operation: Manual Handwheel

Key Advantages of Our Sanitary Diaphragm Valve

Dimensions

Component Breakdown

Installation

To ensure that the valve has maximum drainability, it should be installed at the angle specified. This design will eliminate pooling of liquids on the weir after the system has been drained; this helps facilitate an effective clean-in-place (CIP) clean.

Applications & Industries

Frequently Asked Questions

How does a diaphragm valve compare to a ball valve or gate valve for aseptic applications?

A diaphragm valve assures that fluid is fully isolated. The diaphragm acts as a barrier between the fluid under process and the valve stem as well as the surroundings. This is why diaphragm valves are widely used in processes that require aseptic or sterile conditions as no contamination is tolerated in these instances. On the contrary, ball valves and gate valves use stem packing that is subject to wear and tear, leaking and also harboring bacteria. Despite more durability of ball and gate valves in high-pressure and high-temperature production, diaphragm valves are normally used in pharmaceutical and biotechnological sterile manufacturing.

Can this 1/2" valve be ordered with butt weld ends instead of Tri-Clamp?

Certainly! The Eagle 3A diaphragm valve can be provided with either Tri-Clamp, butt weld or threaded connections. Butt weld ends should be used for fixed installations where the valve is orbital-welded directly into the piping, thus avoiding the need for gaskets and clamps and ensuring maximum sterility and cleanability. Threaded connections are generally reserved for utility services as they create openings that do not allow thorough CIP cleaning. Be sure to specify the connection type needed on the order as the ends are machined at the factory and cannot be modified later.

What makes the fully enclosed structure important for sterile processes?

In fully enclosed valve structure, process fluid has contact only with the body and the diaphragm. Therefore, there is a stem inserted through the packing gland to contact the environment. The design of this construction helps to avoid two contamination risks, which means that it prevents airborne microorganisms or particles from entering the product via the stem seal and prevents the product leakage outside, creating a micro-environment for bacteria growth on the valve surfaces. In regulated pharmaceutical and biotechnology processes, this closed construction is a necessary condition for aseptic activities and therefore the reason for using diaphragm valves in sterile processes instead of other types of valves.

Is this valve suitable for long-term continuous operation?

Indeed, 316L stainless steel valve body is built for lasting service for many years in sanitary applications. The diaphragm is the only component that wears out and needs to be changed from time to time, usually every 12 to 24 months under adequate CIP conditions. In continuous operation, you better have a spare diaphragm kit at your disposal to facilitate a valve rebuild during scheduled maintenance without disconnecting the valve body from the pipeline. The manual handwheel mechanism is simple and reliable without requiring electrical and pneumatic systems and the only maintenance required is lubrication of the threads.

Why Choose Eagle Valves

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