UL Listed Metered Valve for Precision Foam Concentrate Proportioning in Fire Protection Systems with Fail-Safe Design

Product Description:

Ensure reliable firefighting agent delivery with our UL/FM-approved 20mm metered valve, the critical proportioning component in aqueous film-forming foam (AFFF), AR-AFFF, and Class B fire suppression systems. Engineered for extreme reliability, this heavy-duty flow control valve precisely meters foam concentrate into water streams at predetermined ratios (1%, 3%, 6%) under high-pressure conditions. Constructed from corrosion-resistant bronze or ductile iron with stainless steel internals, it withstands hydraulic shock, vibration, and corrosive concentrates. The robust metering mechanism features a calibrated orifice and hardened trim, maintaining accuracy (±5% of set point) even with fluctuating inlet pressures. Its twenty-millimeter port size integrates seamlessly with standard fire system piping (NPT threaded). Key features include tamper-proof adjustment, visual ratio indicator, minimal pressure drop, and compliance with NFPA 11, 16, and 2001 standards. Essential for foam skids, fire trucks, industrial storage tank protection, hangar deluge systems, and any facility requiring certified, dependable foam proportioning.

Bullet Points:

Certified Fire System Valve: UL Listed and FM Approved for use in critical fire suppression applications.

Accurate Proportioning Component: Precisely meters foam concentrate at specified ratios (1/3/6%) under operational pressures.

Robust Flow Control: Heavy-duty construction ensures reliability in high-pressure and emergency scenarios.

Fail-Safe Operation: Tamper-resistant design maintains set proportioning ratio even under system pressure surges.

Standard Twenty-Millimeter Connections: Compatible with NFPA-standard fire protection piping and fittings.

Specific Application Scenario: Precisely injecting 3% AFFF concentrate into the water main feeding an aircraft hangar's deluge sprinkler system during a fire event, ensuring optimal foam blanket formation.

Technical specification

FAQ:

Q: Is this 20mm metered valve compatible with alcohol-resistant (AR) foam concentrates?
A: Yes, models with compatible seals (typically Viton) are specifically designed for use with AR-AFFF and other polar solvent foams.

Q: What is the maximum working pressure for the fire suppression valve?
A: Standard models are rated for 250 PSI (17.2 bar) working pressure. Higher pressure ratings (e.g., 350 PSI) are available.

Q: How often does the proportioning component require recalibration?
A: NFPA 25 recommends annual inspection and flow testing. Recalibration is typically needed every 5 years or after any significant system disturbance.

Q: Can the valve be installed vertically or horizontally?
A: Yes, the metered valve is designed for installation in any orientation without affecting its proportioning accuracy.

Q: Are service kits available for the twenty-millimeter valve internals?
A: Yes, authorized service kits containing seals, springs, and wear parts are available to maintain system compliance and performance.

Future industry manufacturing complex spans an area of nearly 7,000 square meters. It incorporates six high-speed aerosol valve production lines and more than 30 special valve production lines.

Each year, Future industry aerosol can produce up to one billion aerosol valves. Our main products are air freshener aerosol valve, insecticide spray aerosol valve, butane gas aerosol valve, carburetor cleaner aerosol valve, ribbon spray aerosol valve, snow spray aerosol valve,paint spray aerosol valve, fluid spray aerosol valve, portable stove gas aerosol valve, 360 degree aerosol valve, powder spray aerosol vave. Also we have expanded the export market of aerosol metering valves, aerosol caps and aerosol cans.We have also built five standardized workshops to conduct different operations in order to meet the requirements of various customers to ensure we always meet production demands and timelines.

Production of the valve mounting cups is carried out in this workshop. We use a high-speed automatic stamping machine to transform high-quality steel plates into valve mounting cups. Due to the high degree of its automation, this equipment can help to reduce labor costs and increase production efficiency significantly.

In addition, we utilize an efficient machine that can automatically press an outer rubber ring into a valve mounting cup in order to provide superior sealing performance in the process of final assembly.

This workshop contains over 20 injection molding machines and three injection molding lines. Among them, our injection molding machines are used to produce a variety of accessories such as valve stems, valve chambers, actuators, and spray caps, etc.

Due to efficient automation, we require a very small number of staff to run these more than 20 injection molders. During the production process, our quality control inspectors are responsible for sampling and testing every batch of accessories. Additionally, our injection molding line has the capability to produce various sizes of dip tubes in automatic mode.

This workshop is used to assemble all kinds of accessories. It is equipped with automated assembly equipment to greatly increase production efficiency and provide our customers with enhanced profits.

After assembly is completed, our valves will be automatically counted and packed. We are proud to say we are one of the few companies in the industry that possess advanced abilities in product research and development. Every new product needs an innovative mold. For this reason we utilize high-precision wire cutting machines and machine tools that can form our molds into exquisite shapes.

We possess a wide range of technical production and R & D expertise

Whatever your industry related need may be, just ask, we can provide the solution.