Manual PFA Diaphragm Valve
The CYLEX Manual PFA Diaphragm Valve is engineered for the most demanding applications where fluid purity and chemical resistance are paramount. Constructed with wetted parts made from high-purity PFA (Perfluoroalkoxy), this valve excels in handling ultra-pure water, aggressive acids, bases, and solvents without contamination or corrosion.
Model: D-F-MDV3-G208-01A4-FA
Body Size: 36mm
Connector Type: Beaded
Port Size: 1/2″
Actuator Options: Open/Close Only
Control Port Direction: Same as Fluid Flow
Mounting Method: Flange with Threaded Holes
Body Material: Ultra-Pure PFA
CYLEX supports small-batch customization, offers discounts for large quantities, fast delivery, and provides guaranteed after-sales service.
Get a quote or inquire for more information about custom processing of PFA Valves .
Processing Cycle:
7-14 days
Material:
Diaphragm: PTFE
Valve body: PFA
Inquiry NowPFA Valve Catalog (PDF)
Categories :
Manual PFA Diaphragm Valve – For Critical Fluid Control
CYLEX’s Manual PFA Diaphragm Valve represents the gold standard in safe and reliable fluid handling for corrosive and high-purity systems. Its full PFA construction guarantees long-term performance and integrity, protecting your valuable processes and ensuring product quality.
Features and Advantages
● Superior Material Performance: All wetted parts, including body, diaphragm, and liner, are manufactured from high-grade PFA, offering exceptional resistance to a wide range of chemicals and temperatures up to 180°C (356°F).
● Designed for Cleanliness: The weir-type design with a smooth inner surface ensures no fluid retention, making it exceptionally easy to clean and sterilize. This minimizes the risk of cross-contamination.
● Reliable, Leak-Tight Sealing: The innovative diaphragm mechanism acts as a seal, completely isolating the operating mechanism from the media. This design principle guarantees zero leakage through the stem.
● Easy Operation and Maintenance: The union bonnet design allows for quick and easy inspection and diaphragm replacement without removing the valve from the pipeline.
● Robust Construction: Designed and built to withstand rigorous industrial environments, ensuring durability and a long service life.
Technical Specifications (D-F-MDV3-G208-01A4-FA):
| Use fluid | Pure water, chemical liquid | ||||||||||
| Fluid temperature | 5~120 °C (Note 1, Note 2) | ||||||||||
| Pressure resistance | 1.0 Mpa | ||||||||||
| Use pressure | A→B: 0~0.5 Mpa B→A: 0~0.5 Mpa | ||||||||||
| Valve seat leakage | 0 cm³/min (Water pressure) | ||||||||||
| Backpressure | 0~0.5Mpa | ||||||||||
| Ambient temperature | 0～60 ℃（With sensor 0〜50 ℃） | ||||||||||
| Diameter | Φ6.35 Φ8 Φ9.5 Φ10 | ||||||||||
| Material | Diaphragm: PTFE Valve body: PFA | ||||||||||
Note 1: Please use hydrofluoric acid or chemical liquids containing hydrofluoric acid within the range of 5 to 80°C. | |||||||||||
Typical Applications
Our PFA Diaphragm Valves are critical components in numerous industries:
● Semiconductor & Microelectronics: Ultra-pure water (UPW), CMP slurries, etchants, strippers.
● Pharmaceutical & Biotechnology: WFI (Water for Injection), CIP/SIP systems, buffer solutions, process intermediates.
● Chemical Processing: Aggressive acid and alkali dosing, solvent transfer.
● Solar/PV Industry: High-purity chemical distribution in silicon and cell manufacturing.
● Analytical & Laboratory Equipment.
Why Choose CYLEX?
● Proven Expertise: CYLEX specializes in high-performance fluid handling solutions with a focus on quality and reliability.
● Stringent Quality Control: Every valve undergoes rigorous testing to meet international standards.
● Custom Solutions: We offer customization options for size, connection, and material configurations to meet your exact requirements.
● Competitive Pricing & Direct Support: As a manufacturer, we provide cost-effective solutions backed by expert technical support.
Ready to Enhance Your Fluid System? Contact the CYLEX team today for a personalized quotation, detailed technical data sheets, or to discuss your specific application needs. Let us be your trusted partner for critical fluid handling solutions.
Need a Quote or Custom Size? ✉️ Contact CYLEX Today!
Test Type Test Conditions Acceptance Criteria Test Results Burst pressure Hydraulic oil pressure builds up until a leak is detected The burst pressure must be greater than 2 times the rated pressure PASS Pressure envelope 414kPa (60psig)@180°C and 310kPa (45psig)@200°C thermal oil 1 million cycles at 1.5 times rated pressure without external leakage PASS No external leakage Drive cycle test 276kPa (40psig)@180°C and 207kPa (30psig)@200°C thermal oil cycle 500,000 times Functional performance up to 500K cycles without leakage in normally open valves PASS No external or port-to-port leakage <0.050 cc H₂O/hr 276 kPa (40 psig)@180°C and 207 kPa (30 psig)@200°C thermal oil 1 million cycles Functional performance up to 1 million cycles without leakage in normally closed valves PASS No external or port-to-port leakage <0.050 cc H₂O/hr Test Type Test Conditions Acceptance Criteria External medium leakage 552kPa (80psig) CDA Through 1/32″ ID tubing immersed in DI water, no bubbles per minute Port to Port Valve Testing 552kPa (80psig) CDA to valve outlet Less than 4 bubbles per minute through 1/32″ ID tubing immersed in DI water Valve drive Pressure decay 552kPa (80psig) CDA Pressure drop less than 7 kPa (1 psig/min)
Naming Convention
Pneumatic PFA Diaphragm Valve Model Indication and Model Selection
Surface Roughness Specifications & Surface Extractability Specifications
Surface roughness
Surface roughness specification
Surface roughness specification Component Description SEMI F57 0622 Recommended value Ra (µm) Typical test results Ra (µm) Injection molded valve body ≤0.35 ≤0.30 Machine-machined PTFE diaphragm ≤0.35 ≤0.20 Injection molded fitting flow path ≤0.35 ≤0.25 Machine-machined PFA valve body ≤0.60 ≤0.30 Machine-machined PTFE valve body ≤0.60 ≤0.40 Surface extractable specifications
The test liquid used was ultrapure water and the test was carried out at 85°C. The parts were leached after the prescribed rinsing pretreatment. The immersion time was 7 days.
Extractable ionic contamination
Surface extractable ionic contamination
Surface extractable ionic contamination Ion types SEMI F57 0622 Recommended value (µg/m³) Typical product measurement values (ultrapure water 85°C+5°C, 7-day leaching value) (µg/m³) Ammonium ions NH4+ ≤100 <0.1 Bromide ions Br− ≤100 <0.1 Chloride ions Cl− ≤100 <3 Fluoride ions F− ≤20000 <133 Nitrate ions NO3 ≤100 <0.1 Nitrite ions NO2 ≤100 <0.1 Phosphate ions PO42− ≤100 <0.1 Sulfate ions SO42− ≤100 <0.1 Extractable Metal Contamination
Surface extractable metal contaminants
Surface extractable metal contaminants Test items (tcp-ms) SEMI F57 0622 Recommended value (μg/m²) Typical product measurement values (ultrapure water 85°C + 5°C, 7-day leaching value) (μg/m²) Aluminum AI ≤5 <0.2 Arsenic AS ≤2 <0.1 Antimony Sb ≤2 <0.1 Barium Ba ≤15 <0.2 Boron B3 ≤30 <0.5 Cadmium Cd ≤2 <0.01 Calcium Ca ≤10 <0.21 Chromium Cr ≤1 <0.2 Copper Cu ≤10 <0.2 Iron Fe ≤5 <0.2 Lead Pb ≤1 <0.05 Lithium Li ≤2 <0.2 Magnesium Mg ≤2 <0.2 Manganese Mn ≤5 <0.2 Nickel Ni ≤1 <0.2 Potassium K ≤10 <0.5 Sodium Na ≤10 <0.5 Strontium Sr ≤0.5 <0.05 Titanium Ti ≤2 <0.1 Tin Sn ≤2 <0.1 Vanadium V ≤2 <0.01 Zinc Zn ≤5 <0.2
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