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Invalco Flow Meter: Legacy Fluid Sizing Systems and Heavy-Duty Industrial Instrument Parts
Quick Answer: Invalco flow meters still run in many oil, gas, water, and chemical plants. Silver Automation Instruments supplies spare parts, repairs, and equivalent flow meters for legacy fluid sizing systems. Send your pressure, temperature, pipe size, and flow range for a direct replacement quote.
Why Legacy Invalco Flow Meters Still Run in the Field
Many plants in Southeast Asia, the Middle East, and Latin America still use Invalco turbine and positive displacement meters from the 1980s and 1990s. The meter bodies are heavy cast steel or stainless steel. They survive because they were built for rough service. A gas processing site in Oman still runs six Invalco meters on raw gas lines. The line sizes are 2 inch and 3 inch ANSI 600. The operators do not want to replace the whole skid. They only need a rotor kit, a magnetic pick-up, or a new preamplifier.
Here is the thing. Old sizing documents often list an Invalco model number that no longer exists in the original factory system. Procurement teams call us because they cannot cross-reference the old tag. We keep records for many legacy Invalco part numbers. We also ask for photos of the nameplate and the pipe flange.
Heavy-Duty Industrial Instrument Parts for Old Installations
Heavy-duty industrial instrument parts for Invalco flow meters include rotors, bearings, magnetic pick-ups, register heads, O-rings, and preamplifiers. We also supply pressure transmitters and temperature sensors that sit on the same metering skid. In practice, a failed flow meter is often a symptom of a dead RTD or a clogged impulse line. We ask for the full loop data before quoting one part.
Last year a paint manufacturer in Vietnam needed a replacement register head for an Invalco oval gear meter on solvent service. The solvent was 65 cP at 38°C. The flow rate was 18 L/min. We supplied a stainless steel oval gear meter with a 4-20 mA HART output. The mounting length matched the old Invalco body within 3 mm. That detail matters on a rigid pipe skid.
Fluid Sizing Systems That Engineers Still Trust
Legacy fluid sizing systems use simple calculations. They start with flow range, viscosity, density, and line size. Most engineers skip this part and send only a photo of the nameplate. We can work with that. But a full quote is faster when we get actual process data.
For an Invalco turbine meter on diesel, send us the minimum and maximum flow in L/min, viscosity in cP, and line size in DN. We can match the pulse resolution. Many old turbine meters output 800 to 1200 pulses per liter. The replacement turbine meter from Silver Instruments can be set to the same K-factor range. That reduces PLC changes.
Equivalent Fl
Some Invalco parts are simply not made anymore. In that case, a full meter replacement is cheaper than a custom-machined part. The key is to match the process connection, not just the pipe diameter. For a 2 inch ANSI 150 RF Invalco turbine meter on cooling water, we recommend a Silver Instruments electromagnetic flow meter model SIL-MAG-DN50 with a 4-20 mA output. For diesel at 2 to 40 L/min, an oval gear flow meter model SIL-OG-DN15 gives better low-flow accuracy. For compressed air or nitrogen, a thermal mass flow meter model SIL-TMF-DN25 is a direct insertion replacement.
We supply Coriolis mass flow meters, electromagnetic flow meters, ultrasonic flow meters, vortex flow meters, oval gear flow meters, and thermal mass flow meters. The right choice depends on the fluid. For clean water, a magnetic flow meter works well. For diesel, an oval gear flow meter gives better low-flow accuracy. For gas, a thermal mass flow meter or turbine meter is common.
Data We Need for a Quote
Send us the pressure in bar, temperature in °C, pipe size in DN or inches, and flow range in kg/h or L/min. Include the fluid name and viscosity if it is not water. A photo of the old Invalco nameplate helps. We can cross-reference many legacy part numbers. Contact Silver Automation Instruments by phone at +86-135-1213-1526, WhatsApp at 86-135-12131526, or WeChat at +86 13512131526.
FAQ
Do you sell original Invalco flow meter parts?
We supply new spare parts and equivalent replacements for many legacy Invalco flow meters. Some original parts are no longer manufactured. We quote direct substitutes that fit the same process connection and signal output.
What data do you need for an Invalco replacement quote?
Send the model number from the nameplate, fluid type, pressure in bar, temperature in °C, pipe size in DN, and flow range. Photos of the meter body and flange help us confirm the mounting length.
Can you match the old 4-20 mA or pulse output?
Yes. Most legacy Invalco turbine meters use a 4-20 mA signal, a pulse output, or a mechanical register. We configure the replacement flow meter to match the existing PLC or batch controller.
Which industries do you support for Invalco replacements?
We work with oil and gas, water and wastewater, chemical, food and beverage, marine, and power plants. Recent jobs came from Southeast Asia, Oceania, the Middle East, Latin America, and Africa.
What is the lead time for heavy-duty industrial instrument parts?
Common parts ship in 5 to 10 working days. Custom replacement meters usually ship in 2 to 4 weeks. We confirm the lead time after we check the process data and the flange specification.
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