Since 2007, Texas Valves & Instruments LLC has earned a reputation as a trusted provider of premium instrumentation hardware tailored for gas and liquid sampling applications.
Our comprehensive product range includes Sulfinert® coated mini valves, sample cylinders, medium & high pressure fittings, and valve manifolds—all designed to deliver reliable performance in the most challenging industrial environments.
Our specialized offerings include Sulfinert® mini sampling valves, carbon steel valves with PEEK seats, and DOT 3E certified stainless steel sample cylinders, all meticulously engineered to meet stringent industry standards.
Beyond sampling components, we also supply RTD's, Gauges, Thermometers, Switches, and complete manifold assemblies.
Our team combines in-depth technical expertise with outstanding customer service to provide solutions that consistently exceed expectations.
Contact us today for a quote and discover how our trusted instrumentation hardware can elevate your gas sampling operations.
Here are new or recently updated products;
See our many product brochures below:
Sample Cylinders & Accessories Catalog
Updated: 7/17/25
TVI Catalog
Updated: 7/15/25
TVI Manifolds
Updated: 7/16/25
TVI Ball Valves
Updated: 01/04/25
TVI Check Valves
Updated: 01/12/25
Integral Block & Bleed Valves
Updated: 01/04/25 A
Monoflange Manifold
Updated: 01/03/25 A
Medium Pressure Fittings Brochure
Updated: 01/09/25
TVI Medium & High Pressure Valves Brochure
Updated: 1/13/25
MP Double Block and Bleed Brochure
Updated: 7/26/24
Proportional Relief Valves
Updated: 08/06/25
Needle Valves Brochure
Updated: 08/11/25
Sample Cylinder Quick Connects Brochure
Updated: 02/04/25
316SS Metal Hose Brochure
Updated: 03/17/25
SS Braided PTFE Hose Brochure
Updated: 09/26/24
TVI Tubing Support System Brochure
Updated: 01/03/25
Posi-Lok Tube Fittings Brochure
Updated: 03/17/25
Posi-Lok Instrument Pipe Fittings Brochure
Updated: 03/18/25
