LMI Metering Pump B121-392SI 2.5 GPH 100 psi PVDF Manual Control

Description

Product Overview

The LMI B121-392SI metering pump is engineered for high‑precision fluid handling in demanding laboratory environments. With a calibrated flow rate of 2.5 gallons per hour and a pressure rating of up to 100 psi, this pump delivers consistent dosing performance across a wide range of chemical and biological applications. Its housing and internal components are fabricated from chemically resistant poly‑vinylidene fluoride (PVDF), a material known for excellent durability, low permeability, and resistance to aggressive solvents, acids, and bases. The pump incorporates a robust 4‑function manual valve that allows users to fine‑tune flow, start/stop operation, and switch between dosing modes with confidence.

Designed for ease of integration, the B121-392SI features a compact footprint and a lightweight design at just 15 pounds, making it simple to mount on standard lab benches or within custom rigs. The pump’s inlet and outlet connections are sized for standard tubing, and the included fittings ensure leak‑free operation even under continuous high‑pressure conditions. Electrical requirements are minimal, as the unit operates entirely through manual control, eliminating the need for external power supplies and reducing overall system complexity.

Usage

Ideal for research laboratories, quality‑control facilities, and pilot‑scale production lines, the LMI B121-392SI excels in applications such as chromatography solvent delivery, buffer preparation, reagent dosing, and sample preparation. Its precise manual control makes it suitable for experiments that demand exact volume increments, while the high pressure capability supports processes that involve viscous fluids or require forced flow through fine‑porous media. The pump’s chemical compatibility with a broad spectrum of solvents enables its use in pharmaceutical development, environmental testing, and materials science investigations.

Because the pump operates without electronic components, it is also well‑suited for field work and remote laboratory setups where power availability may be limited. Users can quickly adjust dosing parameters on‑the‑fly, facilitating iterative method development and rapid prototyping. The intuitive valve layout reduces training time, allowing technicians and scientists to focus on experimental outcomes rather than equipment troubleshooting.

Why Choose Us

LMI has a long‑standing reputation for delivering reliable laboratory instrumentation, and the B121-392SI continues that tradition with rigorous quality assurance processes. Each pump undergoes comprehensive testing for flow accuracy, pressure tolerance, and material integrity before leaving the factory, ensuring that customers receive a product that meets or exceeds industry standards. Our commitment to durability is reflected in the use of PVDF, a premium material that extends service life and minimizes maintenance intervals.

Beyond product quality, LMI provides responsive technical support and a clear warranty policy, giving users confidence that any issues will be addressed promptly. Our global service network offers spare parts and expert assistance, reducing downtime and protecting the investment in critical laboratory equipment. Choosing the B121-392SI means partnering with a brand that prioritizes performance, reliability, and customer satisfaction.

Key Features

• Precise 2.5 GPH flow rate for accurate dosing in sensitive experiments
• Robust 100 psi pressure rating handles viscous and high‑viscosity fluids
• Durable PVDF construction resists corrosion from aggressive chemicals
• Manual 4‑function valve provides intuitive control without electrical power
• Comprehensive LMI after‑sales support ensures quick resolution of any issues

FAQ

What types of chemicals can the pump handle?

The pump’s PVDF housing is compatible with most organic solvents, acids, bases, and aqueous solutions, making it suitable for a wide range of laboratory chemicals. However, it is not recommended for highly oxidative agents such as concentrated peroxide solutions.

How do I calibrate the flow rate?

Calibration is performed by adjusting the manual valve while measuring the output volume over a set time period. LMI provides a detailed calibration guide that walks users through the process step‑by‑step, ensuring repeatable accuracy.

Can the pump be used for continuous operation?

Yes, the B121-392SI is designed for both batch and continuous dosing applications. Its high‑pressure rating and chemical‑resistant materials allow it to run continuously for extended periods, provided routine checks are performed.

Is spare part availability guaranteed?

LMI maintains an inventory of critical components, including valves, seals, and tubing adapters. Customers can order replacements directly through our authorized distributors, and most parts are stocked for immediate shipment.

What maintenance is required?

Routine maintenance involves inspecting the valve for wear, cleaning the inlet and outlet ports to prevent clogging, and verifying that all connections remain secure. A full service interval is recommended every 12 months or after 2,000 operating hours, whichever comes first.