Manual PFA Diaphragm Valve with Bevel Seat End, 1inch
The CYLEX Manual PFA Diaphragm Valve with Bevel Seat End is engineered for applications requiring the highest integrity connections. The bevel seat end allows for direct butt-welding to the pipeline, creating a permanent, smooth, and leak-free joint that is superior to mechanical connections. This design is ideal for ultra-high purity, corrosive, and abrasive services where hygiene and reliability are critical.
Model: D-F-MDV5-G116-01A4-FA
Body Size: 60mm
Connector Type: Flared
Port Size: 1″
Actuator Options: Open/Close Only
Control Port Direction: Same as Fluid Flow
Mounting Method: Threaded Flange
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 :
Core Features and Advantages
The advantages of PFA manual diaphragm valves primarily stem from the properties of PFA material and its structural design:
Extremely high chemical inertness:
PFA, known as the “King of Plastics,” is resistant to corrosion from nearly all strong acids, bases, strong oxidizers, organic solvents, and mixed chemicals. This is its most prominent advantage.
Extremely high purity:
PFA is inherently clean, releasing no impurities and contaminating the fluid. This makes it a top choice for high-purity industries such as semiconductors, photovoltaics, biopharmaceuticals, and food and beverages.
No dead spots, easy to clean:
The flow path of a diaphragm valve is typically straight. When the diaphragm is open, the fluid path is smooth, with virtually no dead spots and little chance of residual media. This makes it ideal for processes requiring CIP (cleaning in place) or SIP (sterilization in place).
Excellent sealing:
The diaphragm completely isolates the valve cavity from the valve stem drive mechanism, achieving a true packingless seal. The fluid only contacts the diaphragm and valve body, completely eliminating the risk of leakage through the valve stem.
Excellent Temperature Resistance:
PFA has a wide continuous operating temperature range, typically between -50°C and 180°C, meeting the most demanding process temperature requirements.
Technical Specifications (D-F-MDV5-G116-01A4-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 ℃ | ||||||||||
| Diameter | Φ22 | ||||||||||
| 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. | |||||||||||
Main Applications
Due to its excellent performance, PFA manual diaphragm valves are widely used in the following applications:
● Semiconductor and microelectronics industries: Delivery systems for ultrapure water and high-purity chemicals (such as etching solutions, developers, and stripping solutions).
● Photovoltaic industry: Chemical control in the production of polysilicon and monocrystalline silicon.
● Biopharmaceuticals and fine chemicals: Switching and regulating corrosive media and expensive chemicals in reactors and dispensing systems.
● Hydrometallurgy and chemical analysis: Handling various highly corrosive reagents.
● Environmental protection and water treatment: Dosing and metering highly corrosive chemicals such as hydrochloric acid and sodium hypochlorite.
Why CYLEX is Your Trusted Partner in the Fab
● Deep Industry Understanding: We speak your language. Our engineering team understands the critical nature of contamination control in semiconductor processes.
● Rigorous Quality Assurance: Every valve undergoes a battery of tests, including helium leak tests and cleanroom particle counts, with full traceability.
● Technical Support: We provide unparalleled technical data and support to help you integrate our products seamlessly into your system.
● Global Supply Chain Reliability: CYLEX ensures consistent quality and on-time delivery to support your production schedules.
Safeguard Your Yield with Precision-Engineered Fluid Solutions. Contact the CYLEX team today to request a detailed technical data sheet, a comprehensive extractables test report, or to schedule a technical consultation with our engineers.
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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