---
product_id: 94661118
title: "Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35"
brand: "happybuy"
price: "VT169309"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/94661118-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet
store_origin: VU
region: Vanuatu
---

# Aluminum alloy corrosion-proof housing 35 GPM max flow rate 120 PSI max pressure Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35

**Brand:** happybuy
**Price:** VT169309
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your workflow with unstoppable pumping power!

## Quick Answers

- **What is this?** Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 by happybuy
- **How much does it cost?** VT169309 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/94661118-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet)

## 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 35 GPM Flow:** Keep your operations running at peak efficiency with a robust max flow rate.
- • **Unmatched Durability:** Premium nitrile diaphragms and aluminum housing ensure long-lasting, corrosion-resistant performance.
- • **Versatile Industrial Use:** Engineered to handle everything from chemicals to fuels, perfect for petroleum, mining, and water treatment sectors.
- • **Leak-Proof & Sturdy Build:** Bolted aluminum construction guarantees zero leaks and reliable heavy-duty operation.
- • **Precision Air-Operated Design:** Advanced stainless modular air valve delivers smooth, low-pulsation pumping for minimal downtime.

## Overview

The Happybuy Air-Operated Double Diaphragm Pump features a 1-inch inlet/outlet, durable aluminum alloy housing, and premium nitrile diaphragms. It delivers up to 35 GPM flow at 120 PSI max pressure, with a max lift height of 275.6 feet. Designed for industrial versatility, it handles a wide range of fluids with a low-pulsation, efficient air valve system, ensuring reliable, leak-proof performance in demanding environments.

## Description

Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI for Chemical Industrial Use, QBY4-25L-1inch-35

## Features

- Premium Double Nitrile Diaphragms: Our air-operated double diaphragm pump adopts nitrile diaphragms, durable, corrosion-proof, and long-lasting. Max. Temperature: 150 ℉/66 ℃; Max. Pressure: 120 psi; Max. Flow Rate: 39.6 GPM; Max Head Lift：275.6 ft/84 m.
- Sturdy & Leak-proof Construction: The diaphragm pump housing is made of aluminum alloy material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
- Excellent Air-operated Performance: Inlet/Outlet Port Size: 1 inch; Air Inlet Size: FNPT 1/2 inch. A high-quality glyd ring, the double-acting sealing, strengthens air performance.
- Unique & Professional Designs: Our double diaphragm pump features an externally available air distribution system. The modular air valve is stainless. This low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes downtime.
- Wide Applications: This diaphragm pump can handle various fluids, such as waste oil, alcohol, hydraulic fluid, gasoline, diesel, detergent, drink, and so on. It is widely used in many industries, such as petroleum, metallurgy, mining, coating, printing, water treatment, and automobile.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Happybuy |
| Color | Black |
| Material | Aluminum |
| Style | Diaphragm |
| Product Dimensions | 7.8"L x 7"W x 33"H |
| Power Source | Air-Operated |
| Item Weight | 19 Pounds |
| Maximum Flow Rate | 35 Gallons Per Minute |
| Maximum Lifting Height | 275.59 Feet |
| Global Trade Identification Number | 00789458202135 |
| Manufacturer | Happybuy |
| UPC | 789458202135 |
| Part Number | diaphragm pump |
| Item Weight | 19 pounds |
| Item model number | QBY4-25L |
| Is Discontinued By Manufacturer | No |
| Size | 35GPM AL Alloy Nitrile Rubber |
| Item Package Quantity | 1 |
| Included Components | 1 x Air-Operated Double Diaphragm Pump, 1 x User Manual |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Happybuy
- **Color:** Black
- **Material:** Aluminum
- **Style:** Diaphragm
- **Product Dimensions:** 7.8"L x 7"W x 33"H
- **Power Source:** Air-Operated
- **Item Weight:** 19 Pounds
- **Maximum Flow Rate:** 35 Gallons Per Minute
- **Maximum Lifting Height:** 275.59 Feet
- **Global Trade Identification Number:** 00789458202135

## Images

![Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 - Image 1](https://m.media-amazon.com/images/I/71I0xqMpiZL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 - Image 2](https://m.media-amazon.com/images/I/71wnGwUvp3L.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 - Image 3](https://m.media-amazon.com/images/I/711OApnhbqL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 - Image 4](https://m.media-amazon.com/images/I/71oRuhBubRL.jpg)
![Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 - Image 5](https://m.media-amazon.com/images/I/71u-+nKmGnL.jpg)

## Available Options

This product comes in different **Size** 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 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35
- SAFBY 2 PCS Aluminum Global Type F Cam and Groove Hose Fitting, Plug x NPT Male with 2 PCS Camlock Gasket Fitting (1")
- Quafwia 2 pcs Aluminum Camlock (1" part D) Cam & Groove Hose Fittings, cam Lock Fittings Female Coupler x Female NPT Thread cam Lock Fittings camlock Coupling (1'')

---

## 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.vu/products/94661118-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet](https://www.desertcart.vu/products/94661118-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-28*