1/2" PVC Sprinkler Cap 12PCS End Female Thread Pipe Plug Adapter for Irrigation, DIY Projects,Sprinkler Head Cap,Plumbing Repair,Sturdy Construction With Easy Installation (1/2in Gray)

Additional Details from the Manufacturer

This item information is coming from the manufacturer. Some of the details may vary from the Nellis Auction listing. Please check the Quality Rating and Notes for information specific to this listing

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• 1/2" BSPT Size – Check Your Inner Diameter First: This cap fits 1/2 inch BSPT female thread (British Standard Pipe Tapered). The actual inner diameter is approx. 20mm – not 15mm, not 25mm. ✅ How to check: Measure the inside of your female cap or the outside of your male pipe. If your male thread measures about 20mm across the outer diameter, this 1/2" BSPT cap is correct. ❌ Will not fit: 1/2" NPT threads, 1/2" copper pipe, or 3/4" sprinkler connections. Please confirm your thread type before ordering.
• Reliable PVC Material – For Cold Water Only: Made of non-toxic, durable white PVC. Lightweight yet strong for long-term indoor/outdoor use. ⚠️ Maximum operating temperature: 140°F (60°C). Designed for cold water systems only – not for hot water, steam, or high-temperature applications.
• Wide Application – Seal Unused Sprinkler Heads & Lines: Ideal for closing off 1/2" BSPT male threaded pipes in: Sprinkler heads (check your brand thread standard – not compatible with Rain Bird 1800 series) Garden water lines & drip irrigation systems Cold-water supply lines 📌 Note: This is a sealing cap, not a nozzle cap. Works with most BSPT-based irrigation setups, but always test thread compatibility first.
• Easy Installation – Use Sealing Tape: No special tools needed. For a leak-proof seal: Wrap 5–8 turns of PTFE sealing tape (or use a rubber sealing ring) around the male threads. Screw the cap on hand-tight + ¼ turn. ⚠️ Do not overtighten – PVC can crack. Always test under low pressure before full system use.
• Important Reminders: ✅ This cap is for 1/2" BSPT male threads only (inner diameter ~20mm). ❌ Does NOT fit: 1/2" NPT, 1/2" copper pipe, 3/4" BSPT, or any metric threads. ❌ Not for hot water – max 140°F. 📦 You get 12 caps – enough for home or small commercial projects. If you need a larger size, please choose our 3/4" BSPT version (~25mm inner diameter).