

Red Seal Measurement PD/
Oscillating Piston Meters
Red Seal Measurement systems are specially designed to provide unsurpassed service in the most demanding measurement applications, from refined fuel custody transfer to exacting batching operations in the food and chemical industries. Whether the job calls for a positive displacement meter with a legacy of proven performance, or a state-of-the-art Coriolis mass flow meter with enhanced accuracy and sensitivity, Red Seal Measurement metering systems will protect your trust… and your profits.
Red Seal Measurement is proud to offer the Neptune product line. Because we’re confident that our meters are the best in the business, we’re extending the warranty on all of our positive displacement meters to three years from the date of installation (or 42 months from date of shipment).
Neptune Type 4D Flowmeters
1-1/2″ and 1-1/4″ Type 4D meters, with double case design, have been specifically designed for the custody transfer of Liquefied Propane & Butane Gas (LPG). These meters utilize the oscillating piston principle positive displacement measuring chamber technology.
Standard Type 4D Flowmeters come with:
- register
- differential control valve
- inlet check valve
- pressure relief valve
- vapor check valve
- combination vapor eliminator/strainer
- tubing kit
Options include an automatic temperature compensator (ATC) and ticket printing register.
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