Where are the FKM seals in this flow meter?

There are PVC ends that attach to the acrylic body and the your piping would attach to the PVC ends. The seals are where the PVC ends meet the body of the rotameter.

What is the minimum length of lead in pipe required to maintain a flow profile at the specified worst case accuracy?

It is good practice to approach the flowmeter inlet with as few elbows and restrictions as possible. The inlet piping should be as large as the connection to the flow meter. Length of inlet piping makes little difference for normal pressure fed flowmeters. Discharge piping should also be as large as the flowmeter connection and should not have an elbow or restriction immediately after the rotameter. For water flowmeters, water is generally incompressible and moderate back pressure will not affect the accuracy of the rotameter as calibrated.

is this suitable to be used to meter liquid fertilizers?

Most likely no. These are calibrated to the specific gravity of water, (1.0) whereas the specific gravity of fertilizer would probably be around 1.5-1.8? It would depend on the makeup of the fertilizer. We are a manufacturer, so if you knew the specific gravity of the fertilizer we could custom make rotameters and calibrate it to your specific gravity.

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PRM 2-20 GPM Water Rotameter Flow Meter, 1 Inch Female NPT Connection, Acrylic Body with PVC End Tails, 316 SS Plunger & Travel Rod, Viton Seals, Max Pressure 85 PSI, Max Temp 125°F, ±4% Accuracy

PRM 2-20 GPM Water Rotameter Flow Meter, 1 Inch Female NPT Connection, Acrylic Body with PVC End Tails, 316 SS Plunger & Travel Rod, Viton Seals, Max Pressure 85 PSI, Max Temp 125°F, ±4% Accuracy

Product ID: 30825311

⚙️±4% precision accuracy

🌡️Max temp 125°F durability

🛡️316 SS corrosion-resistant plunger

RM592

Duties & taxes included

In stock

Sold byAmazon MalaysiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Flow with confidence, measure with precision.

SEAMLESS INTEGRATION - 1-inch Female NPT connection fits standard water systems with max pressure 85 PSI for versatile use.
PRECISION YOU CAN TRUST - Achieve ultra-reliable flow readings with ±4% accuracy for flawless system monitoring.
CHEMICAL RESISTANT SEALS - Viton O-rings protect against oils, chemicals, and weathering—perfect for tough environments.
BUILT TO BRAVE THE ELEMENTS - UV-resistant acrylic body and PVC tails ensure long-lasting performance outdoors and indoors.
INDUSTRIAL GRADE DURABILITY - 316 stainless steel plunger and travel rod resist corrosion and wear for extended lifespan.

The PRM 2-20 GPM Water Rotameter Flow Meter combines ±4% accuracy with rugged materials like 316 stainless steel and Viton seals, housed in a UV-resistant acrylic body. Designed for 1-inch Female NPT connections, it supports up to 85 PSI and 125°F, making it a reliable, durable choice for precise water flow measurement in demanding industrial and outdoor applications.

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