Overview
The Noshok 403-FFC needle valve is a precision industrial flow control component designed for demanding hydraulic, pneumatic, and plumbing applications. This 400 Series valve features a 3/8″ NPT female-to-female threaded connection with hard-seat construction rated at 10,000 psi at 200°F. Built with steel body construction and stainless steel stem, this needle valve delivers repeatable, fine-flow adjustment in critical system applications.
Key Features
- 100% helium leak tested to 1 × 10−4 ml/s for guaranteed performance and reliability
- Blow-out proof stem design provides secondary seal in full open position
- FKM o-ring seal with PTFE backup ring below stem threads for corrosion and galling protection
- All stem threads rolled for strength and smooth operation
- One-piece bonnet with metal-to-metal seal prevents thread loosening
- 0.187″ (3/16″) orifice diameter for precise flow control
- Vinyl dust cap on bonnet and stem for protection
Technical Specifications
This valve combines hard-seat design with robust construction for extended service life in industrial environments.
- Connection Type: 3/8″ NPT (National Pipe Thread) Female × Female
- Pressure Rating: 10,000 psi at 200°F
- Valve Body Material: Steel
- Stem Material: 316 Stainless Steel
- Seal Type: Hard Seat, FKM o-ring with PTFE backup
- Orifice Diameter: 0.187″ (3/16″)
- Flow Coefficient (Cv): 0.44
- Length: 2-1/2″
- Height: 3-25/32″
- Series: 400 Standard Needle Valves
- Seat Type: Hard seat
Typical Applications
The Noshok 403-FFC is ideal for applications requiring precise needle valve flow regulation:
- Hydraulic system flow control and pressure relief venting
- Pneumatic instrumentation and gas metering
- Industrial plumbing and water line regulation
- Laboratory test equipment and analytical instrument piping
- Machine tool coolant and lubrication systems
- Pressure gauge snubbing and damping
Compatibility & Replacements
Compatible With
- Industrial hydraulic systems operating at pressures up to 10,000 psi
- Pneumatic control circuits
- Automated fluid delivery systems
- Laboratory test manifolds with 3/8″ NPT porting
- ISO 4401 valve mounting patterns
- Standard industrial plumbing networks
Replaces / Drop-In Replacement For
The Noshok 403-FFC is a standard 400 Series valve that maintains dimensional and functional compatibility with other Noshok 3/8″ NPT hard-seat needle valves. Verify compatibility with your system integrator before ordering. Closely related models in the 400 Series include 403-FFC-SF (silicone-free), 403-FFC-PM2 (panel mount), and manual actuated versions with different handle configurations.
Works With
- 3/8″ NPT port systems and manifold designs
- ISO 4401-05 and ISO 4406 compatible networks
- Hydraulic and pneumatic control manifolds
- Fluid power test and measurement systems
- Industrial valve cartridge and in-line configurations
