Thetford 36420 (Superseded by 50243) Tecma Lower Discharge Check Valve - SPECIAL ORDER

Product Overview

The Thetford 36420 Tecma Lower Discharge Check Valve (now superseded by 50243) is a direct OEM replacement check valve designed for compatible Tecma toilet systems. This lower discharge valve helps control waste flow and prevent backflow within the toilet discharge system, supporting proper sanitation system operation.

Ideal for replacing worn, leaking, or malfunctioning check valves, this OEM replacement component helps restore dependable flushing and discharge performance.

Special Order Item

• Estimated Lead Time: 2–3 Weeks
• Return Policy: This is a special order item and cannot be returned once ordered.

Key Features & Benefits

• Direct Replacement: Supersedes Thetford 36420 with updated part 50243
• OEM Tecma Replacement Part: Designed for proper fit and function
• Helps Prevent Backflow: Maintains proper waste discharge direction
• Supports Reliable Flush Operation: Helps maintain sanitation system performance
• Durable Construction: Built for long-term RV and marine sanitation system use
• Easy Replacement: Direct-fit installation for compatible systems

Specifications

• Part Number: 36420 (Superseded by 50243)
• Product Type: Lower Discharge Check Valve
• Application: Tecma Toilet Discharge System
• Material: Durable Plastic & Rubber Components

Fits These Models

• Compatible with select Tecma toilet systems 

Common Issues This Part Solves

• Waste backflow issues
• Leaking discharge valve
• Poor flush or discharge performance
• Worn or sticking check valve components

What’s Included

• (1) Thetford 50243 Tecma Lower Discharge Check Valve (Replacement for 36420)

Installation Overview

1. Disconnect power and water supply to the toilet system
2. Access the lower discharge plumbing area
3. Remove the worn or damaged check valve
4. Install the new replacement valve in the correct flow direction
5. Restore system connections and test operation

FAQs

Q: Is Thetford 50243 the same as 36420?
A: Yes—50243 is the direct replacement for the discontinued 36420.

Q: What does the lower discharge check valve do?
A: It helps prevent waste backflow and maintains proper discharge flow direction.

Q: Which toilets does this fit?
A: It is compatible with select Tecma toilet systems.

Q: What are signs of a bad check valve?
A: Common symptoms include backflow, leaks, poor discharge performance, or unusual flushing behavior.

Why Choose Thetford?

Thetford is a trusted leader in RV and marine sanitation systems, offering dependable OEM replacement parts engineered for reliable operation and long-lasting compatibility.