Product Overview
The FUJIKIN NFPR-ND-91-6.35 is an ultra-pure, air-operated diaphragm valve engineered for high-purity fluid and gas handling in semiconductor, pharmaceutical, and advanced industrial process systems. Manufactured by FUJIKIN, a global leader in precision fluid control technology, this valve utilizes a flexible diaphragm as the sole moving wetted component, isolating the process media from the actuator and eliminating dead volume, particle generation, and contamination risks. With a 6.35 mm (1/4 inch) tube connection, the NFPR-ND-91-6.35 is designed for integration into ultra-high-purity (UHP) gas delivery lines, chemical distribution systems, and critical process loops where leak-tight shutoff, minimal particle shedding, and superior corrosion resistance are mandatory. Its normally-closed pneumatic actuation ensures fail-safe operation and precise flow control in demanding cleanroom environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Ultra-Pure Diaphragm Valve (Process & Pneumatic Valve) |
| Model Designation | NFPR-ND-91-6.35 |
| Operating Pressure | Standard Industrial Grade (Up to rated bar; typical UHP range 0–1.0 MPa) |
| Mounting & Connection | 6.35 mm (1/4″) tube connection; standard FUJIKIN UHP interface |
| Actuation Type | Pneumatic (air-operated), normally closed (NC) |
| Wetted Materials | Ultra-pure PTFE / PFA diaphragm; corrosion-resistant metallic body |
| Leak Integrity | Helium leak-tight; bubble-tight shutoff |
| Surface Finish | Electropolished internal wetted surfaces (Ra ≤ 0.4 µm typical) |
Engineering Features & Advantages
- Precision Performance: Diaphragm isolation design provides zero dead volume and minimal particle generation, ensuring ultra-high-purity media integrity and repeatable flow control in critical process lines.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust pneumatic actuator and high-cycle diaphragm rated for millions of maintenance-free actuations.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including 6.35 mm tube connections and standard FUJIKIN mounting interfaces for drop-in service.
- Contamination-Free Operation: All wetted surfaces are electropolished and constructed from high-purity PTFE/PFA, eliminating outgassing, corrosion, and ionic contamination.
- Fail-Safe Actuation: Normally-closed pneumatic design ensures automatic shutoff upon loss of air supply, protecting process integrity and personnel safety.
Typical Industrial Applications
The FUJIKIN NFPR
PRODUCT IMAGES
FUJIKIN NFPR-ND-91-6.35 Ultra-Pure Diaphragm Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine FUJIKIN NFPR-ND-91-6.35 Solenoid Operated Diaphragm Valve. This Japan-made hydraulic component features a normally closed, solenoid-actuated diaphragm design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.