---
product_id: 332487017
title: "Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3)"
brand: "ququyi"
price: "€ 20.06"
currency: EUR
in_stock: false
reviews_count: 13
category: "Qu Quyi"
url: https://www.desertcart.nl/products/332487017-ququyi-1-2-inch-pvc-bulkhead-water-tank-connector-adapter
store_origin: NL
region: Netherlands
---

# 1/2 inch precision fit Reversed threaded locking nut 4mm thick silicone seal gasket Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3)

**Brand:** ququyi
**Price:** € 20.06
**Availability:** ❌ Out of Stock

## Summary

> 💧 Seal the deal with Ququyi—where precision meets durability!

## Quick Answers

- **What is this?** Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3) by ququyi
- **How much does it cost?** € 20.06 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/332487017-ququyi-1-2-inch-pvc-bulkhead-water-tank-connector-adapter)

## Best For

- ququyi enthusiasts

## Why This Product

- Trusted ququyi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durability That Lasts:** Crafted from premium PVC that resists cracking, fading, and peeling for years of reliable use.
- • **Complete Set with Plugs:** Includes 3 adapters, 3 plugs, and 3 seal gaskets—everything you need to customize and control your water flow.
- • **Precision Engineered Fit:** 1/2 inch PVC adapter ensures seamless integration with standard rain barrels and tanks.
- • **Leak-Proof Seal Technology:** Thick 4mm silicone gaskets deliver superior water-tight performance—no more drips or mess.
- • **Versatile & Ready to Install:** Fits 1-3/8 to 1-1/2 inch drilled holes, perfect for rain barrels, aquariums, ponds, and industrial setups.

## Overview

The Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Set includes three durable PVC fittings with thick 4mm silicone gaskets and reversed threaded locking nuts. Designed for easy installation in 1-3/8 to 1-1/2 inch holes, these adapters provide a leak-proof connection ideal for rain barrels, aquariums, ponds, and industrial water tanks. The set also includes plugs for versatile water flow control, ensuring a reliable, long-lasting solution for your water management needs.

## Description

Buy Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3): Water Pump Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Worked perfectly for my koi pond's moving bed and waterfall! - I built a custom moving bed filter for my koi pond using these. I used the 3" version. I used 3 and connected to a 65 gallon trash can that I put a large air bladder to "boil" K3 media. I had one of these fittings close to the bottom side, and two near the top for water that would exit and make it's way toward a waterfall. These sealed well (no issue with the threads for me!) to the can, flat surface. I did use silicon to ensure no leaks but I don't think this was necessary, however these are now buried and if there were leaks later (I checked before burying) I didn't want to have to dig it up to address. I LOVED the included piece that was included that lets you seal off the fitting. I drilled a series of holes in these so water could flow through but keeps the K3 media from entering the pipes. Without this part I would have had to spend more money and time figuring out a solution that would accomplish the task, in the case of these fittings I just drilled some holes! I used another two of these, and they went through a hole I made in some flexible EPM pond liner that I used for the waterfall. Essentially water enters a bowl (made of the liner) and as it rises it spills over a rock into the pond. For this application I did not need the included caps.
Review: Used these to replace leaking bulkheads. - I used the to replace leaking bulkheads on some rubbermaid stock tanks. They sealed very well and are very well made. The lock nut is a lefthanded thread so you have to turn it to the left to tighten it. It is smooth when tighteningthe lock nut. The o rings are of decent quality. The included plugs are also a welcoming addition. Fitment of the bulkheads are great. Make sure you measure you hole size before ordering the listed size is not the hole size. Hole size will need to be bigger. The only con that I have is I wish these came in black. I have been using these for almost 2 years on some of my aquariums also. Will buy more as needed.

## Features

- Size & Material: 1/2 inch and qualified PVC,seal gaskets is 4mm thick;please note locking nut is reversed threaded.
- How to Install: the PVC Bulkhead Fitting is drill 1-3/8 inch or 1-1/2 inch hole to instal. Assemble the bulkhead and hose adapter together.
- Durable: will not crack, fade, or peel.The bulkhead fitting with a thick silicone seal gasket will creates a better tight seal.
- Package including: 3 pcs bulkhead adapters, 3 pcs plugs and 3 pcs seal gaskets.
- Widely Application: suitable for industrial and house using.It can be installed in rain buckets, water tanks, water trough, ponds or aquariums, very fast and easy way to empty your rain barrel.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B091T81X9Z |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,321 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Compression Bulkhead Fittings |
| Brand | QuQuyi |
| Color | Gray |
| Connector Type | Adapter |
| Customer Reviews | 4.5 4.5 out of 5 stars (572) |
| Date First Available | April 6, 2021 |
| Exterior Finish | PVC |
| Item Package Quantity | 1 |
| Item Weight | 0.32 ounces |
| Item model number | 1-29010-bulkhead |
| Manufacturer | QuQuyi |
| Material | Polyvinyl Chloride |
| Number of Pieces | 3 |
| Package Dimensions | 5.2 x 4.17 x 2.6 inches |
| Part Number | 1-29010-bulkhead |
| Size | 1/2"-3pcs |
| Thread Size | 0.5 inch |
| Thread Type | BIT |
| UPC | 767065943856 |

## Product Details

- **Brand:** QuQuyi
- **Color:** Gray
- **Connector Type:** Adapter
- **Exterior Finish:** PVC
- **Item Weight:** 9.07 g
- **Material:** Polyvinyl Chloride
- **Number of Pieces:** 3
- **Size:** 1/2"-3pcs
- **Thread Size:** 0.5 inch
- **Thread Type:** BIT

## Images

![Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3) - Image 1](https://m.media-amazon.com/images/I/41IDPPp3W5S.jpg)
![Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3) - Image 2](https://m.media-amazon.com/images/I/41OWqOc-4AS.jpg)
![Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3) - Image 3](https://m.media-amazon.com/images/I/41PZOD0Z9nL.jpg)
![Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3) - Image 4](https://m.media-amazon.com/images/I/41RAehT-KXS.jpg)
![Ququyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3) - Image 5](https://m.media-amazon.com/images/I/41hGxdb4MiS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked perfectly for my koi pond's moving bed and waterfall!
*by C***G on July 25, 2025*

I built a custom moving bed filter for my koi pond using these. I used the 3" version. I used 3 and connected to a 65 gallon trash can that I put a large air bladder to "boil" K3 media. I had one of these fittings close to the bottom side, and two near the top for water that would exit and make it's way toward a waterfall. These sealed well (no issue with the threads for me!) to the can, flat surface. I did use silicon to ensure no leaks but I don't think this was necessary, however these are now buried and if there were leaks later (I checked before burying) I didn't want to have to dig it up to address. I LOVED the included piece that was included that lets you seal off the fitting. I drilled a series of holes in these so water could flow through but keeps the K3 media from entering the pipes. Without this part I would have had to spend more money and time figuring out a solution that would accomplish the task, in the case of these fittings I just drilled some holes! I used another two of these, and they went through a hole I made in some flexible EPM pond liner that I used for the waterfall. Essentially water enters a bowl (made of the liner) and as it rises it spills over a rock into the pond. For this application I did not need the included caps.

### ⭐⭐⭐⭐⭐ Used these to replace leaking bulkheads.
*by T***S on October 16, 2023*

I used the to replace leaking bulkheads on some rubbermaid stock tanks. They sealed very well and are very well made. The lock nut is a lefthanded thread so you have to turn it to the left to tighten it. It is smooth when tighteningthe lock nut. The o rings are of decent quality. The included plugs are also a welcoming addition. Fitment of the bulkheads are great. Make sure you measure you hole size before ordering the listed size is not the hole size. Hole size will need to be bigger. The only con that I have is I wish these came in black. I have been using these for almost 2 years on some of my aquariums also. Will buy more as needed.

### ⭐⭐⭐⭐⭐ Works great!
*by T***8 on August 29, 2025*

These work great. Put a bit of grease on the silicone seal to make it easy to tighten.

## Frequently Bought Together

- QuQuyi 1/2 Inch PVC Bulkhead Water Tank Connector Adapter Fitting with Plugs Thru-Bulk Pipe Fitting for Rain Barrels, Aquariums, Ponds(Set of 3)
- 3/8" ID x 10 Ft High Pressure Braided Clear PVC Vinyl Tubing Flexible Vinyl Tube, Heavy Duty Reinforced Vinyl Hose Tubing, BPA Free and Non Toxic

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nl/products/332487017-ququyi-1-2-inch-pvc-bulkhead-water-tank-connector-adapter](https://www.desertcart.nl/products/332487017-ququyi-1-2-inch-pvc-bulkhead-water-tank-connector-adapter)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-25*