National Pipe Thread Adapters

Valco NPT adapters are precision fluidic connectors designed to create minimum-volume transitions between female pipe fittings on pressure gauges or regulators and Valco zero-dead-volume internal fittings. These adapters support clean, efficient flow paths while maintaining secure, leak-resistant connections in analytical systems.

Male pipe adapters provide a direct interface from standard NPT ports into Valco ZDV fittings, helping reduce unnecessary system volume and preserve chromatographic performance in HPLC and laboratory fluid handling applications.

Standard material is 300 series stainless steel for strength and chemical compatibility. Optional materials include Hastelloy C and titanium for aggressive solvents or specialized operating environments.

PART NUMBER DESCRIPTION
PZA21 1/8" NPT male pipe to 1/16" OD tube
PZA22 1/8" NPT male pipe to 1/8" OD tube
PZA41 1/4" NPT male pipe to 1/16" OD tube
PZA42 1/4" NPT male pipe to 1/8" OD tube (regulator to 1/8" tubing)
Key Definitions â–¶
NPT Adapter
A fitting used to connect National Pipe Thread (NPT) ports to Valco zero-dead-volume internal fittings, enabling secure transitions between pipe-threaded components and chromatography connections.
Zero Dead Volume (ZDV)
A connection design that minimizes internal void spaces, helping preserve chromatographic efficiency and reduce sample dispersion.
Male Pipe Adapter
An externally threaded adapter designed to engage female NPT ports on pressure gauges or regulators.
300 Series Stainless Steel
A corrosion-resistant stainless steel commonly used in chromatography fittings for strength, durability, and chemical compatibility.
Minimum Volume Connection
A fitting configuration designed to reduce internal volume between components, helping maintain accurate flow paths and analytical performance.
Material Options
Valco NPT adapters are available in 300 series stainless steel, Hastelloy C, and titanium to support aggressive or specialized fluid handling environments.
Frequently Asked Questions â–¶
What are Valco NPT adapters used for?
Valco NPT adapters create minimum-volume connections between female pipe-threaded components—such as pressure gauges or regulators—and Valco zero-dead-volume internal fittings.
Do Valco NPT adapters reduce dead volume?
Yes. These adapters are designed to minimize internal volume, helping preserve chromatographic efficiency and reduce sample dispersion.
Are Valco NPT adapters compatible with standard gauges and regulators?
Yes. Male Valco NPT adapters thread directly into standard female NPT ports commonly found on pressure gauges and regulators.
What materials are available for Valco NPT adapters?
Standard adapters are manufactured from 300 series stainless steel. Optional materials include Hastelloy C and titanium for aggressive solvents or specialized applications.
Are Valco NPT adapters suitable for HPLC systems?
Yes. Valco NPT adapters are commonly used in HPLC and laboratory fluid handling systems where low-volume, high-pressure connections are required.