---
product_id: 455070902
title: "Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2"
brand: "happybuy"
price: "3320.06 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/455070902-happybuy-air-operated-double-diaphragm-pump-1-2-inch-inlet
store_origin: TN
region: Tunisia
---

# Air-operated, 115 PSI max 12 GPM max flow Cast iron rugged build Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2

**Brand:** happybuy
**Price:** 3320.06 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Pump up your industrial game with unstoppable flow and rugged reliability!

## Quick Answers

- **What is this?** Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2 by happybuy
- **How much does it cost?** 3320.06 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/455070902-happybuy-air-operated-double-diaphragm-pump-1-2-inch-inlet)

## Best For

- happybuy enthusiasts

## Why This Product

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

## Key Features

- • **Powerful 12 GPM Flow:** Keep your operations running at peak efficiency with a robust 12 gallons per minute capacity.
- • **Leak-Free Bolted Design:** All-bolted construction ensures secure, leak-proof fluid handling for peace of mind on every job.
- • **Smooth Air-Operated Mechanism:** Utilizes a stall-free, low pulsation air valve for seamless, reliable performance under pressure.
- • **Durable Cast Iron Construction:** Engineered for longevity and corrosion resistance, built to withstand harsh industrial environments.
- • **Versatile Industrial Compatibility:** Perfectly suited for petroleum, mining, water treatment, and more — be the pro with the pump that adapts.

## Overview

The Happybuy Air-Operated Double Diaphragm Pump features a durable cast iron body, delivering up to 12 gallons per minute at 115 PSI. Its air-operated, double diaphragm design ensures smooth, low-pulsation operation with a leak-free bolted construction. Ideal for demanding industrial applications including petroleum, mining, and water treatment, this pump combines rugged durability with versatile performance to keep your workflow unstoppable.

## Description

Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2

## Features

- ♔【MAIN PARAMETER】~Material: Cast Iron; Type: Double diaphragm; Operation Type : Air-operated; Inlet/Outlet Port Size/Standard：1/2"; Air Inlet Size [in]：1/4".
- ♔【Quality Performance】~Maximum Head：226FT/69M, Max Pressure: 115PSI/8BAR. Top quality glyd ring, a double-acting seal that delivers better performance. 1/4 inch air inlet with NPT fitting uses standard shop air for easy operation.
- ♔【UNIQUE DESIGN】~Features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time.
- ♔【EXCELLENT CONSTRUCTION】~Rugged construction - resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling.
- ♔【VERSATILE USE】~The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Happybuy |
| Colour | QBK-15 - 1/2inch - 12 GPM - Cast Iron |
| Material | Cast Iron |
| Style | Diaphragm |
| Product Dimensions | 30.5L x 30.5W x 20.3H Centimeters |
| Power Source | Pneumatic |
| Item Weight | 8.86 Pounds |
| Maximum Flow Rate | 12 Gallons Per Minute |
| Maximum Lifting Height | 69 Metres |
| Manufacturer | Happybuy |
| UPC | 601707142118 617201476536 |
| Country of Origin | USA |
| Item model number | Air-Operated Double Diaphragm Pump |
| ASIN | B07DFGCGFG |

## Product Details

- **Brand:** Happybuy
- **Colour:** QBK-15 - 1/2inch - 12 GPM - Cast Iron
- **Material:** Cast Iron
- **Style:** Diaphragm
- **Product Dimensions:** 30.5L x 30.5W x 20.3H Centimeters
- **Power Source:** Pneumatic
- **Item Weight:** 8.86 Pounds
- **Maximum Flow Rate:** 12 Gallons Per Minute
- **Maximum Lifting Height:** 69 Metres
- **Manufacturer:** Happybuy

## Images

![Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2 - Image 1](https://m.media-amazon.com/images/I/71EW-htmcgL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2 - Image 2](https://m.media-amazon.com/images/I/71eLgw4lOsL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2 - Image 3](https://m.media-amazon.com/images/I/71m+1odRq0L.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2 - Image 4](https://m.media-amazon.com/images/I/71bOtFWn7tL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1/2 inch Inlet & Outlet Cast Iron 12 GPM Max 120PSI for Chemical Industrial Use, QBK-15-1/2 - Image 5](https://m.media-amazon.com/images/I/8105fP7EAQL.jpg)

## Available Options

This product comes in different **Colour** options.

## Questions & Answers

**Q: Will this pump go on neutral when you close the valves?**
A: This pump is pneumatic. The material is pushed in one direct when the air valve is turned on.

**Q: Where woukd i find a rebuild  kit for this pump if i needed one? Any part numbers or kits?**
A: I am having the same problem no parts available as far as I can see I have been searching for hours and still no luck.

**Q: Do you have 3" or 4"**
A: 2”

**Q: rebuild kit for qpk15?**
A: Just because you put a question mark at the end of a statement doesn't make it a question. I recommend looking at previously answered questions. This is a cheap Chinese clone of an industrial pump. If you need rebuilt kits, buy a pump from a pump supply company.

## Frequently Bought Together

- Happybuy Air-Operated Double Diaphragm Pump, 1/2 in Inlet & Outlet, Cast Iron Body, 8.8 GPM & Max 120PSI, Nitrile Diaphragm Pneumatic Transfer Pump for Petroleum, Diesel, Oil & Low Viscosity Fluids
- TAILONZ PNEUMATIC Brass Hose Barb Fitting -1/2 Inch Barb to 1/2 Inch Male NPT Adapter（Pack of 5)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-29*