This flow meter valve is fitted with a rotor flowmeter in its top transparent window for intuitive display of real-time flow rate. Ideal for applications requiring stable flow. including heating, water supply, and industrial fluid systems. It features a red knob for manual fine-tuning of the valve core opening. enabling continuous and precise flow control to meet the flow requirements of various working conditions.
This 3-way brass water separator manifold reliably distributes water from the main pipeline to 3 independent branch circuits. Each branch is fitted with an independent red knob regulating valve. allowing for individual flow rate control of each branch line. It is ideally suited for small-scale underfloor heating systems, balcony water supply setups, and laboratory fluid distribution applications.
Model No.: JX-0708
Size: 3/4″, 1″
Material: CW617N, CW602N, CW510L
Head: Red hexagon head
Working temperature: -5-100˚C
Working pressure: 7bar
Standard: EN331, ISO228, DIN259
Seal material: PTFE
Connection: BSP
With NBR o-ring
Application: Water Floor Heating System
Medium: Water
Heating System Brass Manifold
This heating system’s brass manifold integrates multiple branch ports. each fitted with an independent flow control valve for individual regulation of hot water flow to each room or zone. Rotating its top white knobs enables precise fine-tuning of branch flow rates. The manifold connects directly to underfloor heating pipes or radiator pipelines and serves as a core component of modern underfloor heating systems.
Model No.: JX-0707
Loops: 2-13 loops, customized
Material: Brass, CW617N
Type: Adjusting Manifolds
Cap: Plastic cap
Working temperature: -20-110˚C
Working pressure: 10bar
Connection: BSP
Threaded: G1 meets the standard of ISO 2008
Exterior Finish Brass
Application: Heating
Fitting System Compatibility: PEX Compression, PEX-AL-PEX Compression
Standard: EN331、ISO228
Brass Manifold End Valve
This brass manifold end valve is an end control fitting for underfloor heating and heating manifolds. integrating manifold end connection, ball valve on-off control, and a blowdown port in one unit. Its bottom lockable blowdown knob allows for regular discharge of impurities and accumulated water from the system. boosting the heat exchange efficiency and extending the service life of underfloor heating systems.
Model No.: JX-0925
Size: 1″, customized
Material: CW617N, CW511L, Cw602N
DN25 1″ Automatic Air Vent End Unit
Automatically release the air
With a drain valve
Power: Hydraulic
Max Working pressure: 16 bar
Max Discharge pressure: 2.5 bar
Max working temperature: 150ºC
Forging brass with sand-blasted
Connection: BSP, ISO228
Stainless Steel Manifold Pipe Fitting
This stainless steel manifold pipe fitting is integrally formed from 304 stainless steel and features multiple evenly spaced ports. It reliably distributes fluid from the main pipeline to 5 branch circuits. All ports are standard female threaded. enabling direct connection to valves, pipelines, and instrumentation. It is widely used in whole-house water supply systems, underfloor heating manifolds, and other fluid distribution applications.
Model No.: JX-1006
Materials: Stainless steel AISI 304L and SS316
Finishing: Polishing
From 2 loops to 13 loops
Main connection thread: 1″F
Thread connection: BSP, NPT
Working pressure:150 PSI
Connection: Female thread ISO 228/1 of 1/2″
Max working temperature 110°C
Max working pressure 10 bar
Testing Pressure: 0.8 MPa, 100% testing
Thread: G, BSP, NPT
Branch distance: 50/55mm
Boiler Manifold
This boiler manifold integrates main pipeline distribution, branch ball valve on-off control. a blowdown valve, and an air vent port in one unit. The bottom blowdown valve allows for regular discharge of impurities and accumulated water from the system. while the top air vent port releases trapped air to prevent air blockages from compromising heat exchange efficiency. It serves as a core component for realizing efficient hot water distribution and safe system operation and management.
Material: Brass
Size: 1-1/2″
Finising: Sand blasted
Hydraulic separator
Heating Kit
Including globe valves and drain/fill valves
Allows for a quick Combi boiler installation
Equipped with a 3/4″ pressure relief valve adapter
Wall Mount
Pre-assembled
Application: Boiler
Pressure Vacuum Breaker
This pressure vacuum breaker features a built-in vacuum-sensing valve core. It operates automatically, with the valve core actuated by fluid pressure and vacuum level. making it ideal for backflow prevention applications such as municipal water supply and heating systems, where anti-backflow protection is required.
Material: PVC
Size: 1-1/2″
Working Medium: Water
Pressure: Vacuum
With an O-ring seal
Working Pressure: 10kg
MBSP thread
Application: Commercial, Gardens, Landscape
Color: Gray
Type of backflow prevention device
FAQs of Flow Meter Valve
1. What is the certified accuracy of the flow meter valve?
Every Plumberstar flow meter valve is calibrated individually. We issue factory precision certification for each one, making sure the displayed flow rate accuracy is within ±1%.
We control precision right from the design stage. Our engineering team has over 10 years of experience. They do precise calculations and repeated verifications to optimize how the valve core cone structure, spring force parameters, and visible floats work together. This allows the valves themselves to have stable, accurate hydraulic characteristics.
Before leaving the factory, all flow meter valves must pass a 100% individual calibration test. Each product is tested on a custom computerized flow test bench: water runs through the valve under different flow conditions. At the same time, a camera recognition system reads the flow meter float’s displayed values. The two data sets are compared in real time. Any product with a measurement deviation over ±1% is marked unqualified at once and rejected.
Test data for all calibrated valves is saved as measurable, traceable records. It’s linked to the corresponding production batch, so the precise source of every product shipped is clear, and the results can be checked and verified at any time.
2. What material is the flow meter valve’s indicator float made of?
The indicator float of Plumberstar flow meter valves features a composite structure—blending plastic with a stainless steel counterweight, the core design for reliable performance.
The float’s main body is made of food-grade high-strength polyoxymethylene (POM) engineering plastic. A precision 304 stainless steel counterweight is fully encapsulated in it via one-piece injection molding. POM material has great water resistance and dimensional stability. It won’t deform or dissolve even after long-term water immersion, perfect for common water media like tap water and HVAC circulating water.
The internal stainless steel counterweight precisely controls the float’s overall buoyancy. It lets the float rise and fall smoothly as the flow rate changes, making sure the reading responds fast and indicates accurately. This structure also stops jamming or displacement issues caused by unbalanced buoyancy, boosting the long-term stability and reliability of the flow indication.
From Wunda Underfloor Heating
3. Can the scale of the flow meter valve provide both GPM and LPM units?
Plumberstar flow meter valve scale panels show two measurement units at the same time: GPM (gallons per minute) and LPM (liters per minute).
Every flow meter valve has both GPM and LPM scales marked on the same panel. The two units are clearly zoned, with values matching one to one. It fits the measurement habits of different markets—North America, Europe, domestic, and more. Customers can use the valve right after purchase without changing the scale or making any modifications.
The dual-unit scales are calibrated strictly to internationally accepted measurement conversion standards. The scale lines are the same thickness and evenly spaced. We use high-contrast marking designs, like black scales on a white panel or red scales on a black panel. reducing the risk of misreading. The marking accuracy of the scale panel matches the overall measurement accuracy of the flow meter valve, ensuring the displayed data is accurate and reliable.
4. How is each flow meter valve calibrated in the factory?
Plumberstar calibrates every flow meter valve one by one with high-precision actual flow tests at the factory, strictly following the ISO 4064 metering standard. We use professional calibration equipment and standardized operating procedures to make sure the product’s metering accuracy meets the standard and data stays stable. This achieves full closed-loop control from calibration to verification.
The core calibration work is done on a fully automatic liquid flow calibration bench. The system uses an electromagnetic flow meter as the standard reference to collect actual flow data accurately. During calibration, we split the valve’s rated working range into three key intervals based on flow rate: minimum, normal, and maximum. The calibration bench’s flow control system then sends a steady, continuous, and quantitative water flow to the valve being calibrated.
The bench collects two sets of data at the same time: the actual flow data from the standard reference end and the displayed data from the flow meter valve being calibrated. Technicians use a professional calibration system to compare these two sets of data in real time. If any deviation is found, they immediately adjust the induction parameters of the valve’s internal metering core and the calibration structure of the float indicator scale. This adjustment continues until the deviation between the displayed and standard values is within the certified accuracy range.
Each flow meter valve’s complete calibration process generates an independent calibration record. It details the product model, serial number, calibration time, as well as the standard data, actual displayed data, and deviation values for each flow interval. All records are bound one-to-one with the product serial number and archived for the long term. We also engrave a calibration qualification mark on the valve nameplate, making sure the product’s metering accuracy is traceable, verifiable, and reviewable at any time.
5. Can the flow meter valve’s flow range and scale be customized?
Of course. You just need to tell us the target flow rate range and the specific application scenarios of the product.
Our engineers will calculate based on fluid dynamics, according to the actual working conditions. They’ll confirm the right float weight and internal flow channel taper parameters for your flow rate range. Based on the calculation results, we’ll customize a new float with the matching weight. Or we’ll adjust the valve body’s internal structure and the mold to make a fully functional product prototype.
Once the prototype design is done, we’ll develop matching scale marks at the same time. This makes sure the display range lines up exactly with the actual flow rate. After that, all customized prototypes go through 100% real-flow testing on a high-precision flow calibration bench. We check their measurement accuracy and stability thoroughly.
The prototypes that pass the test will be sent to you for confirmation. Only after you confirm that the sample’s performance and display effect are good will the product officially start mass production.
6. Can a flow meter valve integrate into a heating manifold for a complete balancing solution?
Plumberstar isn’t just a valve and manifold manufacturer. We’re also a professional supplier of integrated piping system solutions.
When you have system integration needs, our engineers design flow meter valves and manifolds as a single integrated system right from the start. They match all parameters uniformly—from main pipe diameter, flow meter interface specs, to thread types and sealing methods. This makes sure all components connect smoothly, with no installation risks at all.
In production, the full set of manifolds is professionally assembled at our factory. Around 120 skilled workers do the assembly on standardized production lines, using professional torque wrenches for precision. At the same time, quality inspectors with over 10 years of experience do random spot checks, making sure assembly quality meets all set standards.
After assembly, we run a full high-pressure pressure-holding test on the entire manifold set. The test is performed at 1.5 times the rated working pressure, and we hold that pressure for at least 30 minutes. This confirms there’s no leakage risk in the system, guaranteeing stable and reliable performance before shipment.
What’s more, we can pre-assemble all the necessary accessories for you based on your specific needs. This includes exhaust valves, drain valves, temperature-control valve cores, and branch-pipe joints. Once the products arrive at your site, no additional installation is required. It helps you save installation time and reduce construction and commissioning costs.
7. Why choose a factory-direct manufacturer?
Choosing Plumberstar’s factory-direct flow meter valves saves you from middleman procurement troubles. It makes purchasing easier and cost control simpler.
Factory direct supply cuts out all distribution links. Flow meter valves go straight from our production line to you—no layered price hikes. Our pricing is transparent, calculated based on raw materials and production processes. This lets us offer more competitive ex-factory prices. For bulk purchases or long-term framework orders, we can negotiate exclusive cooperation prices directly. These prices are more flexible, helping you cut overall procurement costs significantly.
As the manufacturer, we control every step of the flow meter valve process—from raw material buying, production and processing, calibration and testing, to finished product delivery. Every step follows our factory’s standardized quality control system: spectral inspection of brass valve body raw materials, individual flow calibration for each product, and 100% sealing tests. Middlemen often cause quality loss through secondary packaging or transshipment, but that won’t happen here. You’ll get genuine factory products every time, with consistently stable quality.
We have dedicated production lines and standing inventory for flow meter valves. Purchase orders go straight into our factory’s production scheduling system—no need for middlemen to pass them along or confirm details. Regular stock orders can ship within 1–3 working days. For bulk custom orders, we can adjust production scheduling priority flexibly based on your needs. We also support expedited production. At the same time, we’ll tell you the actual production progress clearly.
