---
product_id: 768928831
title: "Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump"
brand: "happybuy"
price: "¥10676"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/768928831-happybuy-air-operated-double-diaphragm-pump-diaphragm-transfer-pump
store_origin: JP
region: Japan
---

# Air-operated, 29-120 PSI range 12 GPM flow rate Stainless steel corrosion resistance Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump

**Brand:** happybuy
**Price:** ¥10676
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate your workflow with the pump that means business!

## Quick Answers

- **What is this?** Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump by happybuy
- **How much does it cost?** ¥10676 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/768928831-happybuy-air-operated-double-diaphragm-pump-diaphragm-transfer-pump)

## 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 smooth and fast with industry-leading fluid transfer speed.
- • **Durable Stainless Steel Build:** Engineered for longevity and corrosion resistance, built to withstand harsh industrial environments.
- • **Leak-Free Bolted Construction:** All-bolted design ensures reliable, leak-proof fluid handling for peace of mind on every job.
- • **Precision Air-Operated Control:** Operate efficiently with a 29-120 PSI range and a stall-free modular air valve for minimal downtime.
- • **Versatile Industrial Compatibility:** Trusted across petroleum, mining, water treatment, and more — join the pros who demand the best.

## Overview

The Happybuy Air-Operated Double Diaphragm Pump delivers robust 12 GPM flow at up to 120 PSI, crafted from corrosion-resistant stainless steel. Its innovative stall-free air valve and bolted leak-proof design ensure smooth, reliable operation across diverse industries including petroleum, mining, and water treatment. Engineered for durability and efficiency, this pump is the go-to choice for professionals who refuse to compromise.

## Description

12 GPM Air Operated Double Diaphragm Pump 1/2Inch Air-Operated Diaphragm Pump 120 PSI Double Diaphragm Air Pump Introduction: This powerful air-operated double diaphragm pump operates from 29 to 120 PSI. 1/2". dia. inlet and 1/2in. dia. outlet capable . 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. Features: Top quality glyd ring, a double-acting seal that delivers better performance Externally serviceable air distribution system and all-bolted construction for convenience Bolted construction for leak-free fluid handling Suitable for general acid and alkali (not suitable for solvent)This type of diaphragm pump is popular in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive, etc Specifications: Material: Stainless SteelMax. Fluid Temp. (deg F): 122Max. PSI: 120Outlet Port (in. ): 1/2Flow (GPM): 12Max. Suspended Solids (in. ): 1/8Average Air Consumption (CFM): 10Air Inlet Size (in. NPT): 1/4Inlet Port (in. ): 1/2Operating PSI: 29-120

## Features

- ♔【MAIN PARAMETER】~Material: Stainless steel; Type: Double diaphragm; Operation Type : Air-operated; Inlet/Outlet Port Size/Standard：1/2"; Air Inlet Size [in]：1/4".
- ♔【Quality Performance】~Maximum Head：196. 85FT/60M, 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 |
|---------------|-------|
| Color | Qbk-15p - 1/2 Inch - 12 Gpm - Stainless Steel |
| Size | 304 SS F46 diaphragm 9GPM |
| Style | Diaphragm |
| Material type | Stainless Steel |
| Number of items | 1 |
| Included components | No |
| Batteries included? | No |
| Brand | Happybuy |
| Manufacturer | Happybuy |
| Item model number | Air-Operated Double Diaphragm Pump |
| Product Dimensions | 25.91 x 21.08 x 25.91 cm; 3.58 kg |
| ASIN | B07D36RV13 |

## Product Details

- **Brand:** Happybuy
- **Colour:** Qbk-15p - 1/2 Inch - 12 Gpm - Stainless Steel
- **Material:** Stainless Steel
- **Style:** Diaphragm
- **Item weight:** 7.9 Pounds
- **Maximum flow rate:** 12 Gallons Per Minute
- **Maximum lifting height:** 226.4 Feet
- **Manufacturer:** Happybuy
- **UPC:** 601707141449

## Images

![Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump - Image 1](https://m.media-amazon.com/images/I/7140yRtNesL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump - Image 2](https://m.media-amazon.com/images/I/71lqIscFQDL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump - Image 3](https://m.media-amazon.com/images/I/71VtaCb9BNL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump - Image 4](https://m.media-amazon.com/images/I/71zFQ6TDCFL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump, Diaphragm Transfer Pump - Image 5](https://m.media-amazon.com/images/I/81VgvR1nHRL.jpg)

## 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: Got anything rated 200f? Also gan this pump ethanol**
A: Sorry I do not, I only purchased one of these.  I also don't know if anyone has made a pump out of GaN, gallium nitride. There less expensive materials that would be compatible with ethanol.

## Frequently Bought Together

- Happybuy Air-Operated Double Diaphragm Pump, 1/2 in Inlet & Outlet, Stainless Steel Body, 8.8 GPM & Max 120PSI, PTFE Diaphragm Pneumatic Transfer Pump for Petroleum, Diesel, Oil & Low Viscosity Fluids
- Primefit R1401G Mini Air Regulator with steel-Protected Gauge, 60-Scfm At 100-Psi, 1/4" Npt

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**Shop now:** [https://www.desertcart.jp/products/768928831-happybuy-air-operated-double-diaphragm-pump-diaphragm-transfer-pump](https://www.desertcart.jp/products/768928831-happybuy-air-operated-double-diaphragm-pump-diaphragm-transfer-pump)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*