Product Overview
The GF PVC-U/317 Manual Diaphragm Valve (Flanged Connection, PTFE d50 DN40) is a robust solution designed for precise fluid control in corrosive industrial environments. Constructed with a PVC-U body and PTFE diaphragm, it ensures exceptional chemical resistance and durability. Rated for PN16 pressure (16 bar at 20°C), this valve features a flanged connection (ANSI/DIN standards) for secure installation in pipelines. Its DN40 nominal diameter and 50mm flow passage enable efficient handling of liquids, slurries, and suspensions, making it ideal for water treatment, chemical processing, and pharmaceutical applications. The manual operation with a lockable handle allows intuitive control, while the bidirectional design eliminates flow direction constraints.
Technical Specifications & Features
Engineered for reliability, the 317 series valve operates within a temperature range of -10°C to 70°C and complies with ISO 9001, ISO 14001, and WRAS/NSF certifications. The PTFE diaphragm offers superior resistance to acids, alkalis, and solvents, with a service life exceeding 1,200 cycles. The valve’s compact design (approx. 200-250mm length) and lightweight construction (10-15kg) simplify installation and maintenance. Key features include a streamlined flow channel to minimize pressure loss, stainless steel inserts for mounting stability, and a graduated position indicator for precise stroke control. Optional bio-based PVC-U variants reduce environmental impact, aligning with sustainable practices.
Applications & Advantages
Suitable for automation systems and critical processes, the GF 317 diaphragm valve excels in handling viscous or particle-laden media. Its leak-free design prevents contamination, making it compliant with hygienic standards for food and beverage industries. The flanged connection supports quick integration with existing pipelines, while the modular structure allows customization with accessories like limit switches or pneumatic actuators. With a 10-year warranty and GF’s global technical support, this valve offers long-term performance, cost efficiency, and adaptability to diverse industrial needs. Ideal for retrofitting or new installations, it balances corrosion resistance, ease of use, and structural integrity.
| Product Attribute |
Specification |
| Model |
PVC-U/317 Manual Diaphragm Valve (Flanged Connection, PTFE d50 DN40) |
| Manufacturer |
Georg Fischer (GF) Piping Systems |
| Body Material |
PVC-U (Unplasticized Polyvinyl Chloride) for high chemical resistance |
| Diaphragm Material |
PTFE (Polytetrafluoroethylene) for superior corrosion resistance and low friction |
| Connection Type |
Flanged (ANSI B16.5 150 lb or DIN PN16 standards) |
| Nominal Diameter (DN) |
DN40 (1.5") |
| Flow Passage (d) |
50 mm (2") (Note: d50 refers to internal bore diameter) |
| Pressure Rating |
PN16 (16 bar at 20°C) / 150 psi |
| Temperature Range |
-10°C to 70°C (Note: PVC-U performance may vary with media and pressure) |
| Certifications |
ISO 9001 (Quality), ISO 14001 (Environmental), FDA CFR 21 177.1550 (PTFE), USP Class VI (non-toxic) |
| Weight |
~10–15 kg (varies by accessory configuration) |
| Dimensions |
- Length: 200–250 mm
- Height: 250–300 mm (with handwheel)
- Width: 150–180 mm (flange OD) |
| Actuation |
Manual operation with lockable handwheel |
| Design Features |
- Bidirectional flow
- Streamlined flow channel to minimize pressure loss
- Stainless steel inserts for mounting stability |
| Applications |
- Water treatment
- Chemical processing
- Pharmaceutical manufacturing
- Food and beverage industries |
| Accessories |
Pneumatic actuators, limit switches, position indicators |
| Compliance |
ISO 16138 (diaphragm valve design), ISO 9393 (bubble-tight testing) |
| Media Compatibility |
Acids, alkalis, solvents, slurries, and abrasive fluids |
| Warranty |
10-year limited warranty (subject to GF’s terms and conditions) |
