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Premium 1/2" Flush Threaded RV Tank Fitting with Thread Stop - Professional Grade Solution
When you need a reliable, leak-free connection for your RV water tank system, this CPI 1/2" flush threaded fitting delivers professional-grade performance. The built-in thread stop design prevents over-tightening and tank cracking while ensuring consistent installation depth every time. Whether you're repairing a fresh water tank, upgrading your gray water system, or replacing a damaged black water tank fitting, this OEM-quality component provides the durability and reliability your RV deserves.
Features & Specifications
- Built-In Thread Stop: Prevents over-tightening that can crack tank walls and ensures proper installation depth for leak-free connections
- Flush Mount Design: Low-profile construction sits flush against tank surface for clean, professional appearance and space efficiency
- 1/2" NPT Threading: Standard National Pipe Thread sizing ensures compatibility with common RV plumbing components and fittings
- 1 1/8" Hole Size: Simple installation with standard hole saw - easy DIY repair or upgrade project
- OEM Grade Quality: Manufactured by CPI (Elkhart Plastics), the same supplier trusted by major RV manufacturers
- Chemical & UV Resistant: High-quality plastic construction withstands harsh chemicals, temperature extremes, and UV exposure
- Lightweight Durability: Only 1 lb weight won't add unnecessary load while providing long-lasting performance
Why Choose This 1/2" RV Tank Fitting?
This isn't just another generic tank fitting - it's the same OEM-grade component used by major RV manufacturers during original production. The thread stop design is the critical difference that prevents the most common installation mistake: over-tightening. When you tighten a fitting without a thread stop, it's easy to apply too much torque and crack the tank wall, leading to expensive repairs. This fitting's built-in stop eliminates that risk completely. The flush mount profile keeps everything compact and professional-looking, while the corrosion-resistant construction ensures years of reliable service. Whether you're a mobile RV technician, DIY enthusiast, or RV dealer, this fitting delivers the quality and ease of installation you need.
Compare 1/2" & 1" RV Tank Fittings
Choosing the right fitting size and style for your RV tank repair? Compare these popular CPI tank fittings to find the perfect match for your application:
| Model | Thread Size | Hole Size | Design Type | Best For | View Details |
|---|---|---|---|---|---|
| 83A (500232) | 1/2" NPT | 1 1/8" | Flush w/ Thread Stop | Standard connections, prevents over-tightening | Current Product |
| 83-LL (500103) | 1/2" FPT | 1 1/8" | Flush | Female thread applications, compact profile | View 83-LL |
| 77/77-LL (500107) | 1" FPT | 1 1/2" | Raised Spinweld | Larger flow capacity, raised mounting | View 77/77-LL |
| 55 (500108) | 1-1/4" FPT | 2" | Spinweld | High-flow applications, permanent installation | View Part 55 |
Pro Tip: The thread stop design on the 83A makes it ideal for DIY installations where precise torque control is difficult. If you need female threading, consider the 83-LL. For larger flow requirements, step up to the 1" or 1-1/4" options.
Technical Specifications
- Part Numbers: 83A, 500232
- Manufacturer: CPI (Elkhart Plastics)
- Thread Type: 1/2" NPT (National Pipe Thread)
- Hole Size Required: 1 1/8" diameter
- Design: Flush mount with built-in thread stop
- Material: High-grade plastic (chemical, corrosion, and UV resistant)
- Weight: 1 lb
- Barcode/UPC: 45688891
- SKU: 83A
- Applications: Fresh water tanks, gray water tanks, black water tanks, holding tanks
- Installation: Requires 1 1/8" hole saw and standard pipe thread sealant
What's Included
- One (1) CPI 1/2" Flush Threaded Tank Fitting with Thread Stop (Part #83A/500232)
- Manufacturer specifications and installation guidelines
- Backed by CPI quality standards
- Eligible for standard return policy (see store policies)
Compatible Models & Alternatives
This 1/2" fitting works with most RV fresh water, gray water, and black water tanks that use standard NPT threaded connections. Looking for related components? Browse our complete selection of RV Tank Fittings for drain valves, vent fittings, inspection ports, and more. Need a different thread size? Check out the 83-LL flush fitting for female thread applications, or upgrade to the 1" FPT raised fitting for higher flow capacity.
Frequently Asked Questions
How do I install this 1/2" RV tank fitting?
Drill a 1 1/8" hole in your tank wall at the desired location. Apply pipe thread sealant to the male threads, insert the fitting through the hole from inside the tank, and thread on your connection from the outside. The built-in thread stop will prevent over-tightening automatically.
What's the difference between 83A and 83-LL fittings?
The 83A features 1/2" NPT (male) threading with a thread stop, while the 83-LL has 1/2" FPT (female) threading without a thread stop. Both use the same 1 1/8" hole size and flush mount design.
Is this compatible with my RV's fresh water tank?
Yes, this fitting works with fresh water, gray water, and black water tanks that accept 1/2" NPT threaded connections. It's compatible with most RV brands including Forest River, Keystone, Jayco, Thor, and more.
Will this fitting crack my tank during installation?
No - the built-in thread stop is specifically designed to prevent over-tightening, which is the leading cause of tank cracking during fitting installation. This safety feature makes it ideal for DIY installations.
Can I use this fitting for a drain valve connection?
Absolutely. This fitting is commonly used for drain valve connections, fill ports, sensor installations, and any other 1/2" NPT threaded application on RV tanks.
What tools do I need to install this fitting?
You'll need a 1 1/8" hole saw, drill, pipe thread sealant (Teflon tape or paste), and a wrench to tighten your connecting component. The thread stop eliminates the need for a torque wrench.
Why Buy from Elkhart RV Parts?
As the only authorized dealer for CPI and Elkhart Plastics RV components, we guarantee 100% authentic OEM-grade parts - never knockoffs or inferior substitutes. Every fitting is verified genuine before shipping. We maintain deep inventory for fast shipping, provide expert technical support, and stand behind every component we sell. Our team understands RV systems and can help you identify the exact parts you need for any repair or upgrade project.
Ready to complete your RV tank repair with confidence? Order now for fast shipping and get back on the road with a leak-free, professional installation. Questions? Our AI Live Chat has deep product knowledge and can help you select the perfect fitting for your specific application.
| Hole size (inches) | 1.125 |
|---|---|
| Thread size (inches) | 0.5 |
- What size hole is required for the 1/2" flush threaded fitting? The fitting requires a 1 1/8" hole size.
- Does the 1/2" flush threaded fitting have a thread stop? Yes, this fitting includes a thread stop.
- What is the part number for the 1/2" flush threaded fitting? The part number is 83A.
- Who is the vendor for this 1/2" flush threaded fitting? The vendor for this fitting is CPI.
- Is this fitting suitable for tank applications? Yes, this product is classified under tank fittings.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.