Elkhart RV Parts - Universal Fresh Water Tank Fittings Kit with Water Level Sensors for RV Tanks

Upgrade your RV’s water system with this Universal Fresh Water Tank Fittings Kit, featuring multiple grommet sizes to fit standard PVC piping and easy-to-install water level sensors for accurate monitoring. Made from FDA-approved, durable polyethylene, the seamless fittings ensure a safe, leak-proof, and long-lasting solution for RVs, horse trailers, and marine vessels. The kit includes a detailed installation guide, making setup simple whether you’re a DIYer or prefer professional help.
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Universal Fresh Water Tank Fittings Kit with Water Level Sensors

Complete your RV fresh water tank installation with this comprehensive fittings kit designed for DIY enthusiasts and professional installers. Whether you're replacing an existing tank or installing a new one, this universal kit includes everything you need to customize your tank with proper fittings and accurate water level monitoring.

Complete Kit for Custom Tank Installation

This professional-grade fittings kit is specifically designed for RV fresh water tanks and includes multiple grommet sizes to accommodate standard PVC piping connections plus four water level sensors for accurate tank monitoring. Perfect for anyone purchasing a replacement or upgrade water tank who needs to install fittings specific to their RV's plumbing configuration.

What's Included in the Kit

• 4 Mini Probe/Sensor Tank Inserts - Requires 3/8" drill bit for installation
• 2 x 1/2" Grommets (U50W) - Requires 1-1/4" hole saw (white or black, functionally identical)
• 2 x 3/4" Grommets (U100W) - Requires 1-1/4" hole saw (white or black, functionally identical)
• 2 x 1" Grommets (U075W) - Requires 1-3/4" hole saw (white or black, functionally identical)
• 2 x 1-1/2" Grommets (U150W) - Requires 2-1/2" hole saw (white or black, functionally identical)
• 1 x 2" Grommet (U200W) - Requires 3" hole saw (white or black, functionally identical)

Note: Actual fittings may be a combination of white or black grommets, but all are functionally identical and meet the same quality standards.

Tools You'll Need (Not Included)

• 1-1/4" hole saw (for 1/2" and 3/4" grommets)
• 1-3/4" hole saw (for 1" grommets)
• 2-1/2" hole saw (for 1-1/2" grommets)
• 3" hole saw (for 2" grommets)
• 3/8" drill bit (for probe/sensor installation)
• Electric or cordless drill
• Safety goggles
• Tape measure
• Deburring tool (knife or rough sandpaper works)

Step-by-Step Installation Guide

Installing Grommets

Your pipe size will determine which grommet sizes you need to install. Follow these steps for a leak-proof seal:

1. Mark the Tank - Measure and mark exactly where you want to place each grommet (double-check measurements to prevent errors)
2. Create Starter Hole - Make a pilot hole for your hole saw
3. Cut the Hole - Use the appropriate hole saw to cut the tank opening
4. Deburr the Hole - Remove all rough edges to ensure a tight seal (critical step)
5. Install Grommet - Push the short end of the grommet into the hole until flush, checking all sides for proper seating

Installing Water Level Sensors

Sensors measure water levels and help you monitor tank capacity. Keep sensors at least a finger's width from edges for proper sealing.

Standard Sensor Placement:

1. Top Sensor (Full Tank) - Place at the end of tank at top center to measure when tank is full
2. Middle Sensor (Half Full) - Place at middle end of tank between center and side to measure half-way point
3. Bottom Right Sensor (Empty) - Place at bottom towards right corner to measure low level
4. Bottom Center Sensor (Empty) - Place at bottom towards center for secondary empty reading

Installation Steps:

1. Mark the tank exactly where you want to place each probe (verify measurements)
2. Drill the 4 holes using your 3/8" drill bit and remove any burrs for a tight seal
3. Push probe sensor into the hole, wiggling into place, then twist nut to tighten

Professional Installation Service Available

Don't want to tackle this DIY project yourself? We offer professional custom fittings installation service where we'll spin weld the fittings directly into your tank before shipping.

View Custom Installation Service (Up to 5 Fittings) →

Premium OEM-Quality Components

• 100% Authentic OEM-Quality Parts - Crafted to meet or exceed factory standards for reliable performance
• FDA-Approved Materials - Made from high-quality, durable polyethylene fully approved for safe drinking water storage
• Universal Compatibility - Works with rotational molded fresh water tanks for RVs, horse trailers, and marine vessels
• Leak-Proof Design - Engineered for superior strength and reliable sealing when properly installed
• Corrosion Resistant - Designed to stay functional for years of dependable service

Complete Your RV Tank System

Looking for tanks to go with your fittings kit? We carry a full range of RV water tanks and related products:

• 10 Gallon RV Fresh Water Tank (17x14x10) - Compact size for smaller RVs
• Browse All Fresh Water Tanks - Complete selection of sizes and configurations
• RV Water Tank Monitors & Probes - Replacement sensors and monitoring equipment

Need Black or Gray Water Tank Fittings?

We also offer a complete fittings kit specifically designed for RV holding tanks (black water and gray water):

Universal Holding Tank Fittings Kit for Black & Gray Water Tanks →

Frequently Asked Questions

Will this kit work with any fresh water tank?
Yes, this is a universal kit designed to work with standard rotational molded RV fresh water tanks. The multiple grommet sizes accommodate various pipe diameters.

Can I use this kit for black or gray water tanks?
While the grommets are universal, we recommend our dedicated holding tank fittings kit for black and gray water applications.

Do I need all the grommets in the kit?
Not necessarily. Install only the grommet sizes that match your specific plumbing pipe diameters. Extra grommets can be kept as spares.

How accurate are the water level sensors?
When properly installed according to the standard placement guide, the sensors provide reliable 4-level monitoring (full, half, low, empty).

What if I make a mistake drilling the holes?
Measure twice, drill once! Use the included installation guide and take your time marking locations. If you're not confident in DIY installation, consider our professional installation service.

Are the white and black grommets different?
No, they are functionally identical. Color variation is due to manufacturing batches, but performance and quality are the same.

Why Buy from Elkhart RV Parts?

We specialize in OEM-grade RV water tank systems and components. Every fittings kit includes authentic, high-quality parts designed for long-term reliability. Our detailed installation guides and optional professional installation service ensure your tank system is installed correctly the first time.