Swagelok B-1VF4 is a brass integral bonnet needle valve designed for compact performance and reliability across a wide range of industrial applications. This straight-pattern valve features a Vee-style stem and provides a maximum flow coefficient (Cv) of 0.73, making it suitable for precise flow control in systems utilizing 1/4 inch FNPT connections.

Technical Performance

The valve is engineered for durability with a brass body and is certified for low emissions. It operates effectively across a temperature range from -65°F to 400°F (-53°C to 204°C). At its maximum temperature rating of 400°F, it maintains a pressure capacity of 390 PSIG (26 BAR).

Specifications Table

Feature	Details
Body Material	Brass
Flow Pattern	Straight
Stem Type	Vee
Connections	1/4 in. Female NPT (Both Ends)
Max Flow (Cv)	0.73
Cleaning	Standard Cleaning and Packaging (SC-10)

Product Identifiers

Industry Classification Codes

• eClass (10.1): 37010203
• UNSPSC (17.1001): 40183102
• UNSPSC (15.1): 40141602

Selection and Safety Notes

Safety Disclaimer

The complete catalog contents must be reviewed to ensure safe product selection. Total system design, including function, material compatibility, and proper installation, is the responsibility of the system designer and user. Do not mix Swagelok products or components with those of other manufacturers unless governed by specific industrial design standards.