Diaphragm Valves
Manual and automatic diaphragm valves for viscous, abrasive or sensitive products
DIAPHR-V Series diaphragm valves provide complete isolation between the fluid and the actuation mechanisms, eliminating any risk of contamination. Their dynamic seal-free and dead-space-free design makes them ideal for sanitary, corrosive, and abrasive applications where sealing and purity are critical.
Insulation: Complete fluid/mechanisms
Body materials: 316L stainless steel, PVC, PP, PVDF
Membranes: EPDM, FKM, PTFE, NBR
Design: No dead space, hygienic
Main characteristics of diaphragm valves
- Flexible membrane design ensuring complete isolation between the fluid and the mechanisms
- Body made of 316L stainless steel, PVC, PP, PVDF or special alloys depending on the application
- Membranes made of EPDM, FKM (Viton), PTFE, NBR or special materials for specific applications
- Zero dead space design for healthcare and pharmaceutical applications
- Two-way watertight seal with replaceable membrane
- Compliant with ASME BPE, FDA, USP Class VI, and 3-A Sanitary Standards
- EHEDG, ATEX for explosive atmospheres, and GMP for regulated industries certifications
Technical advantages
Complete isolation: The membrane completely separates the fluid from the mechanical parts, eliminating any risk of contamination and allowing use with sterile or sensitive products.
Reduced maintenance: No dynamic seal, no external leakage. The diaphragm is easily replaceable without dismantling the valve from the line.
Versatility: Suitable for viscous, abrasive, corrosive fluids, sludges, pastes and products containing suspended solids.
Optimal cleaning: Dead space-free design facilitates cleaning (CIP) and sterilization (SIP) for sanitary applications.
Technical data
| Setting | Specifications |
| Available diameters | DN15 to DN300 (½" to 12") |
| Operating pressure | Up to 16 bars |
| Serving temperature | -20°C to +180°C (depending on the membrane) |
| Types of actuators | Manual, pneumatic, electric |
| Connections | Smooth, threaded, flanged, sanitary |
| Surface finishes | Ra ≤ 0.8 µm for sanitary applications |
Membrane materials:
- EPDM: Hot/cold water, steam, diluted chemicals
- FKM (Viton): High temperatures, hydrocarbons, solvents
- PTFE: Aggressive chemicals, high purity
- NBR: Oils, greases, fuels
- Silicone: Food and pharmaceutical applications
Industrial application areas
Pharmaceutical Industry
Aseptic applications, active pharmaceutical ingredient production, CIP/SIP systems. The dead-space-free design and complete isolation ensure the integrity of sterile and contamination-sensitive products.
biotechnology
Fermenters, bioreactors, purification systems. Compatible with culture media, enzymes and microorganisms without risk of cross-contamination.
Food Industry
Production lines for dairy products, beverages, sauces, and viscous products. Hygienic design for easy cleaning and compliance with strict food standards.
Fine Chemistry
Aggressive chemicals, solvents, acids, bases. Excellent chemical resistance thanks to the wide choice of membrane and body materials.
Water Treatment
Dosing of reagents, abrasive sludge, wastewater. Resistance to abrasion and treatment chemicals.
Pasta and Paper
Control of pastes, sludges, and bleaching chemicals. Excellent performance with fluids containing solids and abrasives.
Applications CIP/SIP
Clean-in-place and sterilization systems. Optimized design for automated cleaning cycles with aggressive detergents and disinfectants.
Cosmetics Industry
Creams, lotions, skincare products. Maintaining product purity and compatibility with sensitive ingredients.
Competitive advantages
• Total fluid/mechanism isolation - Zero contamination
• Zero dead space design - Optimal cleaning
• No dynamic seals - Reduced maintenance
• Two-way closure - Flexible installation
• Easily replaceable membrane - Minimized maintenance costs
• Wide range of materials - Maximum adaptability
• Compliant with health standards - Regulated industries
• Abrasion resistance - Fluids containing solids
• CIP/SIP compatible - Automated processes
• International certifications - Worldwide use
Available configurations
Types of valves:
- Manual diaphragm valves
- Pneumatic diaphragm valves
- Electric diaphragm valves
- Aseptic diaphragm valves
- Full bore diaphragm valves
Special options:
- Sanitary connections (Tri-Clamp, ISO)
- Mirror finishes for pharmaceutical applications
- ATEX certifications for hazardous areas
- Quick assembly kits
- Conductive membranes for explosive products
Frequently Asked Questions
Fluid Transfer Products
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