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Refrigerant Flow Meter for Sale: Locating In-Stock Standard Size Hardware for Quick Shipping
Quick Answer: Most refrigerant flow applications need DN10, DN15, or DN20 inline flow meters. Silver Automation Instruments keeps these standard diameters in stock for immediate dispatch. Our Coriolis mass flow meters and vortex flow meters ship to Southeast Asia, the Middle East, and Oceania in 3 to 5 business days from order confirmation.
Why Standard Bore Flow Meters Speed Up Your Refrigerant Projects
Industrial refrigeration contractors and HVAC equipment builders hit the same wall time after time. A chiller line in Indonesia needs a meter to measure R134a mass flow rate. The spec calls for a DN15 Coriolis flow meter with 4-20 mA HART output. The local distributor says 6 to 8 weeks lead time. That delay can freeze a whole installation schedule.
Silver Instruments holds a shelf stock of DN10, DN15, DN20, and DN25 refrigerant flow meters. Both Coriolis and vortex types sit on our rack in Nanjing. Because these sizes cover about 80 percent of refrigerant loops we see in the field, we ship within 72 hours of order. You do not pay an express surcharge just to get a common line size.
We have shipped the same DN20 Coriolis meter to a cold storage operator in Vietnam on a Tuesday. The unit was installed and recording mass flow of R404A by Friday afternoon. That speed matters when a facility loses cooling capacity and every hour costs money.
Coriolis vs Vortex for Refrigerant Measurement
Engineers often ask which technology fits their refrigerant line. The answer depends on fluid phase and accuracy requirement.
A Coriolis mass flow meter reads mass flow directly in kg/h. It ignores density changes, pressure swings, and vapor fraction up to a point. For liquid refrigerant lines with R134a, R410A, R32, or ammonia, a Coriolis meter from our stock gives you 0.1 to 0.2 percent of rate accuracy. You also get a live density readout. That helps chiller OEMs confirm subcooling and detect flash gas.
A vortex flow meter works well on superheated refrigerant vapor lines. It reads volumetric flow, so you need a separate pressure and temperature compensation to back out mass flow. But a vortex meter costs roughly half of a Coriolis. Our inline vortex flow meter DN15 to DN25 units sit in stock for refrigerant gas applications where 1 percent reading accuracy is enough. Think heat pump test benches in Turkey or a refrigerant recovery system in Mexico.
Here is the thing. Most field technicians skip the fine print on wetted materials. Refrigerant oils and elevated discharge temperatures eat standard EPDM seals. Our stock refrigerant flow meters use FKM or FFKM O-rings and 316L stainless steel housings. That covers mineral oil, POE oil, and R290 propane without swelling or leaks.
Standard Sizes We Hold in Stock for Fast Delivery
Ordering a flow meter with special process connections or exotic sizes is where lead times stretch to months. That is why we focus stock on the diameters that move most often in refrigeration projects.
DN10 Coriolis mass flow meter. Dual bent tube design. 0 to 500 kg/h typical range. Suits small chillers, heat pump test stands, and refrigerant charging machines. Face-to-face length 250 mm. 1/2 inch NPT or tri-clamp ends. Stock units ship with PT100 temperature sensor built in.
DN15 Coriolis and vortex meters. Our highest turnover size. Coriolis covers 0 to 3000 kg/h. Vortex covers 2 to 60 m/s velocity on vapor lines. Process connections are 1/2 inch or 3/4 inch NPT. We ship at least 15 units a month from this size bin to Australia, Thailand, and Saudi Arabia.
DN20 Coriolis mass flow meter. Typical range up to 8000 kg/h. Used on medium capacity air-cooled chillers and ammonia ice plants. Flanged or threaded connections available off the shelf.
DN25 vortex flow meter. Good for discharge gas flow on screw compressor packages. 316L body. Temperature rating 150°C continuous. We see many inquiries from Middle East district cooling
Connecting to Your Control System on Day One
Stock flow meters from Silver Instruments ship with built-in transmitter electronics. You do not wait for a separate amplifier. The output is active 4-20 mA HART as standard. Modbus RTU over RS485 is an option we also keep ready on small sizes. Pulse output for remote totalizing comes standard on vortex models.
We calibrate every refrigerant flow meter on a water rig that traces to national standards. A 5-point calibration certificate goes inside the box. For customers who need refrigerant-specific calibration, we offer R134a or R404A calibration service. That adds 2 to 3 days to the lead time but is still much faster than a full custom build. Send us your refrigerant type and we confirm the schedule.
Real-World Cases Where Quick Shipment Made the Difference
Last year a chiller manufacturer in Brazil lost their incumbent flow meter supplier 3 weeks before a key customer witness test. They needed a DN15 Coriolis meter to measure R410A mass flow in a 300 kW chiller test loop. The meter had to arrive in Sao Paulo within 10 calendar days. We shipped a stock DN15 Coriolis with FFKM seals and 4-20 mA output by air freight. It cleared customs in 2 days. The witness test passed on the originally scheduled date.
Another time a service contractor in Dubai needed a DN20 vortex meter for a district cooling plant retrofit. The operator wanted to trend discharge superheat on a centrifugal compressor loop. We dispatched a 316L vortex flow meter rated for 150°C from our shelf. It was in the electrical panel and talking Modbus 4 days later.
In practice, small delays in flow meter delivery ripple into big contract penalties. That is why we prioritize ready-to-ship sizes.
What You Need to Specify for a Quick Quote
To check stock and get a delivery date within a few hours, send us these details. Pipe size (DN). Refrigerant type. Fluid phase (liquid or vapor). Operating pressure in bar, temperature in °C, and normal and maximum mass flow rate in kg/h. Connection type preference (NPT, flange, or tri-clamp). Output signal you need.
We reply with in-stock confirmation, datasheet, and a shipping estimate to your city. Typical air freight to Jakarta, Riyadh, Lagos, or Mexico City takes 4 to 5 working days. DHL Express gets a box to Auckland or Santiago in 3 to 4 days from our Nanjing facility.
Email: [email protected]
Tel: +86-135-1213-1526
Whatsapp: 86-135-12131526
WeChat: +86 13512131526
Frequently Asked Questions About Refrigerant Flow Meters
Q1: Which flow meter is best for liquid R410A in a chiller test loop?
A Coriolis mass flow meter with 0.2 percent accuracy. A DN15 or DN20 size fits most test installations. Silver Instruments keeps both sizes in stock with FKM seals rated for R410A operating pressures.
Q2: Can the same meter handle R290 propane or ammonia?
Yes. Our stock Coriolis meters use 316L wetted parts and FFKM O-rings. This material set is compatible with ammonia, propane, and CO₂. Always specify the refrigerant when ordering so we ship the correct seal package.
Q3: What is the lead time on a non-standard size?
DN32 and larger sizes are usually built to order. Typical lead time is 4 to 5 weeks. If you can accept a reducing adaptor, we often fit a DN25 stock meter into a DN32 line and ship within the week.
Q4: Do you supply ATEX or IECEx certified meters for refrigerant gas?
For Zone 2 gas environments, we hold a limited stock of compliant vortex flow meters. ATEX Zone 1 certification adds 3 weeks because we assemble the certified barrier and enclosure. Talk to our engineers with your zone classification early in the project.
Q5: How do I confirm stock before paying?
Email [email protected] with your required size and refrigerant. We send a live stock photo and serial number within one business day. You pay only after you approve the unit and shipping schedule.
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