HydroLogic Monitor Cross - 1in - Schedule 80 - PVC

Track Inlet-to-Outlet Pressure Drop on a Prefiltration Tank

A prefiltration media tank clogging or channeling doesn't announce itself until flow or water quality already suffers, and the earliest warning sign is usually a pressure change between the tank's inlet and outlet that goes unnoticed without a way to monitor it. The HydroLogic Monitor Cross is a 1-inch Schedule 80 PVC fitting built to sit at the inlet and outlet of a prefiltration tank, giving growers a direct read on pressure at each point.

Female slip fittings on both the inlet and outlet keep installation straightforward for a 1-inch line, and a liquid-filled gauge plus a labcock test port let operators read pressure and pull a water sample from the same fitting without extra plumbing.

Key Features & Benefits

• 1-inch Schedule 80 PVC — built for durability under continuous system pressure.
• Female slip fittings — inlet and outlet fittings sized for straightforward installation into a 1-inch line.
• Liquid-filled pressure gauge — dampens needle vibration for a stable, easy-to-read pressure value.
• Labcock test port — pulls a water sample from the same fitting without additional plumbing.

Who Should Use the HydroLogic Monitor Cross

This fitting suits operators running a prefiltration media tank ahead of a reverse osmosis or filtration system who want to track pressure at the inlet and outlet and catch a clogging or channeling filter bed before it affects downstream water quality.

About HydroLogic

HydroLogic Purification Systems has spent roughly two decades building water purification hardware for gardening, residential, and commercial use, including the reverse osmosis systems and prefiltration accessories this Monitor Cross is designed to support.

Frequently Asked Questions

How do I install the Monitor Cross?

It installs near a prefiltration media tank using its two female slip fittings, one at the tank's inlet and one at the outlet. That placement lets you read pressure on both sides of the tank from a single fitting.

Why does the gauge matter for a prefiltration tank?

A rising pressure difference between the inlet and outlet usually signals that the filter media is clogging or channeling, which reduces both flow and filtration quality. Catching that change early lets you service or replace the media before it affects downstream equipment.

What is a labcock test port used for?

It's a small valve built into the fitting that lets you draw a water sample without disconnecting any plumbing. That makes it easy to check water quality at the same point where you're already monitoring pressure.

Why is the gauge liquid-filled?

A liquid-filled gauge dampens needle vibration from pump pulsation or flow turbulence. That keeps the pressure reading steady and easier to read than a dry gauge would show under the same conditions.

What was this fitting called before?

This item was formerly sold as the HyperLogic HL 11681.1. HydroLogic has since updated it under its current model name, the Monitor Cross, with the features described here.