Happy Holidays from Tri-State Technical Sales

Happy holidays! Here’s wishing you all the joys of the season and the happiness all throughout the upcoming year.

Valve and Flame Arrester Combination Units

The Groth Corporation model 8800A valve and flame arrester combination units are designed to protect your tank from damage created by over-pressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is increased fire protection and safety.

The Groth Corporation model 8820A pressure/vacuum valve & flame arrester (pipe-away) units are used for pressure and vacuum relief where vapors must be piped away. They are designed to protect your tank from damage created by overpressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is reduced emissions level and increased fire protection and safety.

For more information, contact Tri-State Technical Sales. Call them at 610-647-5700 or visit their web site at

Learn About Lead-Free Water Regulations and Compliant Solenoid Valves

White Paper: Understanding the New Lead-Free Water System Regulations and Choosing Valves to Comply Lead is toxic and dangerous to human health. Regulations that restrict lead content in devices used for potable water are becoming more pervasive and present new design issues for valve users.

In the U.S., regulations governing lead content of the components of potable water systems have seen considerable changes as safety restrictions tighten. The federal law in effect since January 2014 dictates much lower lead content for certain systems and components than in the past.

This report outlines relevant sections of the law. It then focuses on the choices facing specifiers and purchasers who need to select important components of these systems — two-way solenoid valves — to comply. It considers the calculations that must be made to determine average lead content. Finally, it discusses the pros and cons of common valve materials (brass, lead-free brass, composite/plastic, and stainless st…

Tri-State Technical Sales Gives Thanks to Our Veterans

Veterans Day honors those who took an oath to defend the United States and our Constitution, from all enemies, foreign and domestic. Through the observance of Veterans Day, we remind ourselves of their bravery, sacrifice, and selflessness.

Our Veterans are our neighbors, friends, family, and co-workers. They took an oath to defend the United States and our Constitution, from all enemies, foreign and domestic. We must never forget their bravery, service, and sacrifice.

Tri-State Technical Sales thanks our Veterans for serving our country and protecting our freedom.

The EnviZion Hygienic Diaphragm Valve

The EnviZion valve platform was developed to reduce the customer’s total cost of ownership (TCO).

Costs associated with installation, validation, operation, and maintenance are significantly reduced with the EnviZion valve.
Over 90% annual maintenance cost savings is achieved by reducing the time required to change diaphragms.No retorquing after thermal cycling reduces start up time and maintenance cost.Body seal reliability eliminates the potential for system contamination.Preventative maintenance intervals can be extended, saving time and cost.Production Capacity is optimized and unscheduled downtime and investigation costs are minimized For more information about the EnviZion Hygienic Diaphragm Valve, contact Tri-State Technical Sales by calling 610-647-5700 or visit

Rupture Disc Designed Exclusively for Railroad Tank Car Overpressure Protection

The Tanksert Rupture Disc was designed exclusively for railroad tank car overpressure protection, and to conform with ICC regulations.The Tanksert disc is a composite type, with flat seat sealing configuration. It is composed of an outlet ring for positive dimensional burst control and protection of the top section – a slotted metal top section which is the controlling burst member – plastic seal which isolates top from the tank media and prevents leakage - vacuum support which prevents seal from becoming damaged, should a pressure surge occur during transit or unloading. The vacuum support is also specially designed with an off-set section to assist in positive alignment during installation.

These discs are exceptionally accurate and fit standard threaded or bolted railroad tank car safety vents.

The Tanksert disc is a six (6) piece construction. The first five (5) pieces are permanently spot welded together.

Is the controlling member of the disc assembly, constructed of 316 S.S.Is t…

8 Selection Criteria for Choosing Differential, Pressure, or Temperature Switches

When selecting differential pressure switches, pressure switches, or temperature switches there may be more than one choice, so the lower cost option is usually the best choice. There are some general guidelines for considering cost. For instance, in general a NEMA 7 rated switch will cost more than a NEMA 4 rated switch, a stainless steel housing will cost more than a die cast aluminum or brass housing, and a dual chamber design more than the standard housing.
Here are 8 Selection Criteria for Choosing Differential Pressure or Temperature Switches
Does the applications require an Explosion Proof (NEMA 7) housing or a Watertight (NEMA 4) housing?Do you need single or dual set points?Do you need fixed or adjustable dead band?Do you need an adjustable set point switch or a factory set only switch (this step is only for Pressure Switches)?Select the appropriate switch model listed in the step 5 boxes in the pressure, differential pressure or temperature switch selection charts. This sele…