Drain Tempering Valve FAQs

Drain Tempering Valve FAQs

As a component of their normal operation, commercial equipment such as dishwashers, combi ovens, and steam humidifiers discharge super heated steam and water. This effluent needs to be tempered down before going to drain and entering public sewers. ThermOmegaTech® offers the drain tempering valve (DTV) to simplify this process and comply with drain temperature limitations of international plumbing codes.

See some FAQs about the DTV below.

DTV faqs 1024x410 - Drain Tempering Valve FAQs

FAQ #1: When should the DTV be used?

A DTV should be used in any application where drain effluent with temperatures exceeding 140°F must be cooled prior to entering a public sewer in accordance with plumbing codes.

Failure to comply with these temperature limitations may lead to failed inspections, fines, and damage to PVC piping or equipment.


FAQ #2: How does the DTV work?

The DTV is installed into the drain line so that the hot effluent passes over the thermostatic actuator to constantly monitor drain water temperature. When effluent temperatures rise above the valve’s set-point, the valve will automatically modulate open to allow cold water to flow into the drain, cooling the effluent.

Once the effluent’s temperature falls below the set-point, the DTV modulates closed, cutting off cold water flow to conserve water.


FAQ #3: Can the DTV handle steam?

Yes, the DTV can handle fluid temperatures up to 250°F.


FAQ #4: What sizes are available? 

The DTV is offered in 1/2″, 3/4″, and 1″ sizes in both brass and stainless steel.


FAQ #5: How do I select a size?

Use our online DTV Flow Calculator! To view the calculator, click here.


Reliable and self-operating, the DTV ensures drain water temperatures comply with internationally mandated plumbing regulations.

For more information on the DTV or these Drain Tempering Valve FAQs, we invite you to visit our website or to contact our team of product experts.

Your CircuitSolver® FAQs – Answered!

Your CircuitSolver® FAQs – Answered!

We frequently receive questions about DHWS design, CircuitSolver® applications, and our other plumbing products during calls with our representative agencies. Below are some of the most commonly asked questions:

Q1: Do you have to use CircuitSolver® with a variable speed recirculation pump?

A1: No, CircuitSolver®s may be installed in systems using standard fixed speed or variable speed recirculation pumps. However, some features of a variable speed pump, also known as a “smart” pump, can be an excellent match with CircuitSolver®s.

Q2: What happens during system start-up when using a fixed speed pump and CircuitSolver®?

A2: At startup, CircuitSolver®s are fully open, therefore GPM is high and head loss is low, allowing the system to balance quickly. As water temperature rises to the CircuitSolver®’s set-point the valve modulates “closed”, adding friction/head loss and reducing the flow from the pump. As a result, the flow required to offset heat loss will be satisfied.

Q3: How do you size the recirculation pump in systems with CircuitSolver®?

A3: Pumps should be appropriately sized to offset total system heat loss, whether it is a fixed speed or variable speed pump. Systems should not be sized for start-up, they should be sized for normal operation of the recirculation system. The CircuitSolver® Design Guide can help you calculate flow, pressure loss, and the recirculation pump size of your system. The design guide is available on our website’s plumbing specs page here.

Q4: Can CircuitSolver® work in the same recirculation system as an aquastat?

A4: Yes, CircuitSolvers® are able to function in systems with aquastats, however ASHRAE, ASPE, and OSHA strongly advise against turning off recirculation pumps with aquastats.

Q5: Do you have BIM and Revitt files on your website?

A5: Yes! CircuitSolver® BIM and Revitt files are available on our website’s plumbing specs page here: https://www.circuitsolver.com/plumbingspecs/.

The answers to more CircuitSolver® FAQs can be found on our website: https://www.circuitsolver.com/faqs/.

If you have any additional product or applications questions, please do not hesitate to email or call.

STVM Washsown Station FAQs

ThermOmegaTech®’s STVM® Washdown Station utilizes a silent type venture mixing valve to combine steam and water together to produce a user defined temperature. This ingeniously designed product is efficient, easy to maintain, and most importantly safe – a necessary addition to any facility that uses washdown stations.

Designed to have a quick startup time and an even shorter downtime, the STVM® features an interchangeable cartridge for ease of maintenance. Unlike other manufacturer’s washdown stations that require a specialized tool and the user to take the unit off the wall to perform regular maintenance, ThermOmegaTech®’s STVM® Washdown Station requires only a standard wrench and doesn’t need to be moved from its point of installation. Simply unscrew the cartridge from the top of the unit, put in a new cartridge, and the unit is up and running within moments.

As the STVM unit uses steam to heat water, personnel safety is a top priority. If the cold-water supply to the unit is interrupted the thermostatic mixing valve will sense the over-temperature flow and close off, preventing operation. The valve will remain closed until the cold water supply is restored, after which it will automatically open and re-establish flow, protecting both personnel and equipment.

STVM image 168x300 - STVM Washsown Station FAQsFrequently Asked Questions about the STVM Washdown Station:

Q: What is the difference between a 150°F unit and a 185°F unit?
A: These numbers indicate the unit’s over-temperature shutoff point, typically due to a sudden lack of a cold-water supply. Once the unit’s thermostatic actuator senses its set shut-off temperature (either 150°F or 185°F, depending on the model) the internal mixing valve will modulate closed and stop the flow. Only after the cold-water supply has been restored to the unit will the valve modulate open and re-establish flow. The unit’s over-temperature shutoff point is not field adjustable.

Q: How can we make the unit’s downtime for maintenance even shorter?
A: Keep a spare cartridge on hand! Don’t wait for the STVM® Washdown Station to require maintenance to order a new cartridge as the lead time will result in the unit being out of service until the new cartridge is received. By keeping a spare cartridge on hand the station’s downtime is minimized, allowing personnel to get back to work sooner.
For more information on ThermOmegaTech®’s STVM® Washdown Station, visit our website at: http://www.thermomegatech.com/product/stvm-steam-water-washdown-station/.

Should you have any questions, please do not hesitate to give us a call!

A Washdown Station For Every Application

It is critical to have a washdown station in food processing, dairy, breweries, wineries, chemical, petrochemical, and pharmaceutical facilities to maintain a clean environment. Washdown stations are used to quickly and efficiently clean and sanitize equipment in place between production runs or shift changes.

ThermOmegaTech® offers three different washdown station options:

STVM® Steam & Water Station

STVM image 168x300 - A Washdown Station For Every Application

The STVM® Washdown Station provides an effective high temperature wash in an easy-to-maintain package. Utilizing our patented Silent Venturi Mixing Valve (STVM®) technology, this washdown station mixes together steam and water to produce a high-powered wash at a user-defined temperature.

Designed to be self-scouring, the mixing valve prevents mineral buildup in tight spaces, decreasing maintenance frequency. To further reduce time spent on required regular maintenance, the unit is in-line serviceable. The user simply switches out the STVM® cartridge with another on hand and the unit is back up and running in minutes.

Safety is our priority, so every STVM® Washdown Station has two built-in safety features – interlocking ball valves to prevent steam-only operation, and an automatic shut-off when output is 15°F over the unit’s temperature set-point (either 150°F or 185°F) or when cold water flow is interrupted.

HCX Water & Water Station

WashdownHCX 300x300 - A Washdown Station For Every Application

For facilities without an available steam supply, the HCX Station is an ideal solution. This unit utilizes individual globe valves to mix hot and cold water to a user-defined temperature, clearly displayed on the integrated temperature display gauge.

To prevent accidental scalding, the unit is offered with our unique SmartFlow feature. This in-line, over-temperature safety valve automatically stops flow should the unit’s output exceed a factory specified set-point.

HCS Single-Channel Station

HCS 249x300 - A Washdown Station For Every Application

The HCS Station simplifies washdown applications even further, providing a high-powered single stream of either cold water or pre-heated hot water at the turn of a ball valve. The unit employs an integrated temperature gauge to confirm output temperature.

Should you have any questions about which washdown station is right for your facility, please contact your dedicated local CircuitSolver® representative.

How the ESS Water Heater Keeps Employees Safe

Picture1 300x300 - How the ESS Water Heater Keeps Employees SafeRecognized in the commercial plumbing industry for our innovative line of CircuitSolver® thermostatic balancing valves, our dynamic paraffin wax actuator technology can be used in a wide range of applications for several markets. In addition to the CircuitSolver® line, ThermOmegaTech®’s plumbing product offerings also include the ESS Water Heater for tepid water delivery to emergency safety showers and face/eyewash stations.

Emergency safety fixtures are critical to employee safety in any workplace where hazardous chemicals are handled. For facilities without a ready supply of steam or hot water, the ESS Water Heater is a safe and reliable solution. Specifically designed to comply with ANSI Z358.1-2014 tepid water standards, this product combines a third-party electric water heater and ThermOmegaTech®’s Therm-O-Mix® Station Water/Water Mixing (WWM).

When an emergency safety station is activated, cold water from the facility and hot water from the heater enters the Therm-O-Mix® WWM which automatically proportions the two flows into OSHA-approved tepid water which is then delivered to the fixtures.

Unlike instantaneous heaters, the ESS Water Heater will be unaffected by a loss of power. The industrial-grade water heater has a heavy-duty carbon steel tank with an internal cement lining and external foam insulation to minimize stand-by heat loss. The Therm-O-Mix® WWM functions completely mechanically with no need for a source of electricity. Even if the lights go out, the ESS Water Heater packaged system will continue to provide tepid water and ensure worker safety.

Should you have any questions about this product or application, please do not hesitate to contact our dedicated team of product experts.

CircuitSolver® Sanitary Flush Valve Introduced to Protect Against Legionella

ThermOmegaTech®, a world leader in the design and manufacture of self-actuating thermostatic valve technology, introduces the CircuitSolver® Sanitary Flush (CSUSF) Valve as the newest addition to their CircuitSolver® line. The CSUSF allows for higher-temperature water to flow through a domestic hot water system during the disinfection process to protect against Legionella growth in systems capable of high-temperature flushes.

Nick Tallos, Vice President of Engineering for ThermOmegaTech® says, “CircuitSolver® technology was already an innovative balancing method for domestic hot water systems. Now, with the addition of the Sanitary Flush, CircuitSolver® further stands out as a revolutionary technology with a myriad of applications. With its capability to protect against Legionella growth, the CircuitSolver® becomes an even easier and reliable balancing solution. It’s just another step in the right direction.”

CSUSF 338x119 - CircuitSolver® Sanitary Flush Valve Introduced to Protect Against LegionellaThe CircuitSolver® is a thermostatic, self-actuating balancing valve that continuously and automatically adjusts the flow through each branch of a domestic hot water recirculation system to maintain the specified temperature at the end of each branch, regardless of fluctuations in hot water demand. It is a direct replacement for manual balancing valves and eliminates balancing labor and callbacks. The CSUSF valve uses two high-thrust actuators, a low-temperature actuator to maintain standard balancing temperature, and a high-temperature actuator to allow for high temperature sanitary flushing of the system.

The CircuitSolver® Sanitary Flush Valve is tamper-proof and automatically balances any domestic hot water system at a set temperature, while still allowing higher water temperatures to enter for disinfection, preventing Legionella growth. It is the ideal solution for a maintenance-free balancing and high-temperature flush application. The CSUSF is lead-free, stainless steel, and corrosion resistant. The CSUSF valve is NSF/ANSI 61 certified,  comes equipped with a long service life and 3-year warranty.

ThermOmegaTech®’s CircuitSolver® Sanitary Flush Valve is available for purchase through your local representative.

To view the full article on Mechanical Hub click here.