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R&D Highlight: Water Sensor

  • September 2, 2015

ChemTec is an engineering-driven company, and engineering is really about applying the Laws of Physics. We’re familiar with analyzing gas flow rates, accounting for expansion coefficients, and monitoring the position of suspended magnetic pistons, but optical engineering is outside of our realm. Or it was until a customer set us a challenge we couldn’t resist.

R&D: Mass Flow Meter

  • May 7, 2015

Our engineers are developing a thermal mass flow meter for gas flow evaluation. The 3D model to the right shows what is looks like, for now. We’re looking for your suggestions and needs as a customer.

R&D Highlight: LCA

  • April 27, 2015

LCA Series: Custom piston and LED light

Installation: Vertical

Industry: Residential or Commercial

Media: Gas

CCM Series & Gas Analyzers

  • December 5, 2014

Gas analyzers are used in many industrial processes and play an important role: they are used to verify the presence or lack of presence of a particular gas or multiple gases. For example, in metal fabrication oxygen is used during the process of smelting iron ore into steel. Oxygen (O2) removes impurities from the steel. As the third most abundant element in the universe, Oxygen is the most widely used gas consumed by all living beings and is used for industrial purposes and applications including chemical, medical, aerospace, water treatment, semiconductor, food/beverage, and pharmaceutical. On the other side of industrial processes, analyzers detect the presence of gases such as sulfur, carbon, argon, nitrogen, and hydrogen. These gases can be dangerous if present in the atmosphere during manufacturing. Detection of these gases can be crucial to the safety of the plant and personnel.

Product Spotlight: Excess Flow Valves

  • April 1, 2013

ChemTec’s excess flow valves are perfect for a variety of industries. Below are some examples.

Industry Example 1: Semiconductor Fabrication

Example of a semiconductor

Example of a semiconductor

Applications include:

  • Installed in-line on hydrogen gas feeder lines; responsible for supplying hydrogen gas into the plant, delivering hydrogen to multiple areas within the plant.

Product Details: Ultra-high purity, electro-polished to 10 RA finish, manual reset excess flow valve with welded ¾” VCR fittings*, electric switch conduit, CE and ATEX mark. *The welded VCR fitting option is of great benefit to the customer providing easy removal and replacement for cleaning without damaging the unit.


Industry Example 2: Alternative Fuel

Chemtec's HP-EFV-750-S Excess Flow Valve in a CNG Filling Station

HP-EFV-750-S in a CNG filling station; installed on the line between the supply line and vehicle.

Applications include:

  • Natural Gas Vehicles
  • CNG Fueling Stations
  • Hydrogen Fuel Cells


Industry Example 3: Hydrogen Generators

ChemTec’s EFV-250-B Custom Unit for a Hydrogen Generator

ChemTec’s EFV-250-B (also available in 316 SS) custom unit for hydrogen generator OEM; installed at the base of cell phone towers


Applications include:

  • CNG (compressed natural gas) filling stations
  • Housed within NGV’s (natural gas vehicles)
  • Hydrogen generators in cell phone towers


Industry Option 4: Food & Beverage

Applications include:

  • Packaging Equipment – bursts of nitrogen are used during the sealing stage in both dry and liquid packaging processes. Used in Cap feeding; Sealing; Bottling/Kegging/Canning
  • Cryogenics – used for dry goods packaging; dispensing of nitrogen for product freshness and bag sealing.
  • Specialty Gas distribution lines – used to monitor the dispensing of gases (CO2 or nitrogen) for beverage grade beer & soda consumption
  • Liquid Nitrogen dosing systems – for peanut packaging and wine bottling
  • Liquid Filling Systems – signal flow/no flow condition of liquids and monitor the amount dispensed prevents over/under fill.
  • Process Technology – CIP (clean in place) & SIP (sterilization in place) systems; UV Systems for disinfection; Recirculating chillers
  • Filtration – signal flow/no flow condition and monitor liquids; monitor prevents pump burn-out; can signal notice of filter maintenance. Used in Batch processing; Brewing process; CO2 reclamation; Filling; Pasteurizing; Reverse osmosis (removing chlorine and fluorine from water before brewing process)
  • Beverage Pumps – signal flow/no flow condition; monitor liquids; prevention of pump burn-out.


Industry Option 5: Marine

Applications include:

  • Reverse Osmosis Desalination – Installed to protect pumps, monitor flow, signals flow/no-flow conditions for quality; monitors operating pressures and fresh water flush upon shutdown. Units are available in materials suitable for use on seawater such as Monel 400, to resist corrosion, and 316SS which is suitable for all potable water applications.


Industry Example 6: Gas Utilities

  • Application: Natural Gas lines
  • Line size: 1” diameter or less is a common line size for most residential and commercial lines (i.e. homes, apartments, townhomes, condos, restaurants, plants & factories).
  • Placement: Installed in-line, between the main “T” and the home; where the line pressure is not less than 10psig.

Customized Excess Flow Valves for Any Application

The excess flow valve shown below has been customized with automatic tube welds and VCR fittings for an OEM of hydrogen gas delivery systems.  Installed in an ultra-high purity application, ease of installation and removal without causing damage was of utmost importance with this design.

Chemtec EFV-250-12 FVCR Excess Flow Valve

EFV-250-12 FVCR

Below, the EFV-750-S MRS is customized with tube stubbs and flanges.

EFV-750-S Manual Reset Series, customized with tube stubbs and flanges


R&D Highlight: FS Series

  • March 15, 2013

Chemtec Custom FS Series Non-Adjustable Flow Monitor

FS Series – custom unit with barb fittings (PVC; Teflon wetted parts)

Installation: Horizontal
Industry: Semiconductor
Media: Deionized water

Product Customization: 
Customer requires a non-adjustable flow monitor to signal flow/no-flow of deionized water in semiconductor processing equipment. Standard FS Series operates vertical inlet facing down, however the application requires the unit to be installed horizontally. ChemTec customized the FS to meet the customer’s needs.

For FS Series application & industry questions, please contact us.

Product Spotlight: MAO Series

  • March 1, 2013

ChemTec’s MAO Series flow meter is a reliable, accurate, economical low flow meter with a microprocessor-based conditioning circuit capable of sending a signal to computer controlled and remote controlled process equipment.  The MAO Series handles all liquids & aggressive chemicals, offers all-Teflon® wetted parts, and is available in three sizes: 125, 250 and 500 Series (1/8″, 1/4″, 1/2″ ports, respectively).The MAO comes ready with three outputs (voltage, pulse and current loop) in each unit.

Chemtec MAO 125/250 Flow Meter

MAO 125/250


Chemtec MAO 500 Flow Meter

MAO 500



Chemical Manufacturing
Municipal Water/Wastewater Treatment
Processing Equipment


Chemical processing of raw/caustic material
Portable and permanent chemical injection skids
Chemical dosing, mixing, delivery systems
Chemical feed systems
Pharmaceutical processing equipment (dosing, spraying, dispensing pharmaceutical grade material)
Beverage dispensing, mixing, processing

Special pricing for ChemTec’s MAO Series starts at $400.  For application & industry specific questions or pricing & delivery inquiries, contact us.

Product Spotlight: FS Series

  • October 1, 2012

ChemTec’s FS Series is one of two non-adjustable flow monitors we offer. The FS’s original design is built to handle liquid with flow rates as low as 0.15 GPMs and ranging as high as 8.5 GPMs.

The FS offers the same ease of use and low maintenance of ChemTec’s versatile LPH Series. And, like all ChemTec products, the FS Series can be customized to meet your customer’s needs. Below, a few examples of standard and custom FS’s.

Standard unit shown in 360 Brass; fixed actuation point; non-adjustable. Close on/off differential, no seals, in-line porting.

Standard unit shown in 360 Brass; fixed actuation point; non-adjustable. Close on/off differential, no seals, in-line porting.

Custom FS in 316 SS with 1/2 FNPT inlet,   1/2 MNPT outlet. Applications: Thermal heater,   packaging machines, spray paint booth.

Custom FS in 316 SS with 1/2 FNPT inlet, 1/2 MNPT outlet. Applications: Thermal heater, packaging machines, spray paint booth.

Custom FS in PVC with 1/2" FNPT ports,   1/2" FNPT conduit, high voltage switch. Applications: animal feed-water dispensing.

Custom FS in PVC with 1/2″ FNPT ports, 1/2″ FNPT conduit, high voltage switch. Applications: animal feed-water dispensing.

Custom FS High Voltage Switch in PVC

Custom FS in PVC, 1/2 MNPT inlet and outlet, Molex pin and plug, heat shrink. Applications: aser cooling for light lasers at Disney.

Chemtec Custom FS in PVC , Molex pin and plug , Heat shrink

Custom FS Series in brass hex with leads removed from outlet face. With a spring, unit can be installed in any direction.

Chemtec Custom FS in Brass hex with leads removed from outlet face. With a spring, unit can be installed in any direction

Custom FS with removable conduit/switch assembly allows easy welding without damaging the switch. Applications: commercial AC systems, Freon circulation loop.

Custom FS with removable conduit/switch assembly allowing easy welding without damaging the switch.

Custom FS in Delrin 150 white with 1/2″ male tape pipe and 1/4″ crimp male disconnect terminals, wrench flats. Applications: for water; mixing of chemicals.

Chemtec Custom FS in Delrin 150

Custom FS in PVC; mounting holes, hose barb and tube fittings, Amp pin and plug. Applications: cooling circuit with glycol water mix.

See the FS Series Specifications page for flow rates, port sizes and options.

Some current applications for the FS Series include but are not limited to pharmaceutical processing equipment, thermal process controllers, hands-free emergency eye wash stations, laser cooling systems, chemical mixing systems and heat pumps.

For more information on the FS Series, applications, specifications, design and/or product customization contact Rajen.

Product Spotlight: LCA Series

  • August 1, 2012

In line, field adjustable flow monitor for liquid flow to detects loss of flow or signal no-flow conditions.

General Applications:

  • Machine lubrication
  • Process flows
  • Cooling systems
  • Water treatment systems

Chemtec LCA Series Adjustable Flow Monitor     Chemtec LCA Series Adjustable Flow Monitor

Custom LCAs & Current Applications

Packaging Industry
Application: bag handling and closing systems for pet food & agriculture
Unit: LCA-250-P (A-1095)
Customized spring & set point

Air Conditioning Industry
Application: closed loop liquid Freon
Unit: LCA-B1084-379
Customized porting & conduit, socket solder

Chemtec Custom LCA-B1084-379

Water Treatment
Application: ozonation skids
Unit: LCA-250 (B-1090) (PVC)

Application: hydraulic fluids circuit, cruise missile deployment
Unit: LCA-375-S A-1172
Customized military style porting (MS 33649)

Industrial Lubrication
Application: hydraulic circuit
Unit: LCA-500-B B-952 SAE-8
Customized porting

Chemtec Custom LCA-500-B B-952 SAE-8 with Customized Porting

Laser Industry
Application: H2O & Glycol cooling system for lasers/recirculating chillers
Unit: LCA-500-B (B-783) & LCA-500-P (B-783)

Contact Rajen for additional application details.

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