---
product_id: 133689060
title: "PONDMASTER - Diaphragm Replacement Kit for AP-20 Aquarium Air Pump - 1 Kit"
brand: "pondmaster"
price: "₱2660"
currency: PHP
in_stock: false
url: https://www.desertcart.ph/products/133689060-pondmaster-diaphragm-replacement-kit-for-ap-20-aquarium-air-pump
store_origin: PH
region: Philippines
---

# PONDMASTER - Diaphragm Replacement Kit for AP-20 Aquarium Air Pump - 1 Kit

**Brand:** pondmaster
**Price:** ₱2660
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** PONDMASTER - Diaphragm Replacement Kit for AP-20 Aquarium Air Pump - 1 Kit by pondmaster
- **How much does it cost?** ₱2660 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/133689060-pondmaster-diaphragm-replacement-kit-for-ap-20-aquarium-air-pump)

## Best For

- pondmaster enthusiasts

## Why This Product

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

## Description

Danner   Supreme Diaphragm Replacement Kit is designed to fit aquarium air pump   59943 AP-20. Diaphragm edge wall must be inserted in to the diaphragm retainer   with the proper side facing into the groove in the retainer. The deeper side of   the diaphragm will always face into the retainer groove. This kit includes diaphragms,   flapper valves, plastic slip washers and bottom pressure chamber gasket; some   models also include rubber plug sets to seal the flapper valve housing.

## Features

- Package Description:�1 KitServing Size:�..Number of Servings:�..
- DESCRIPTION DETAILS FACTS DIRECTIONS WARNINGS Danner Supreme Diaphragm Replacement Kit is designed to fit aquarium air pump 59943 AP-20. Diaphragm edge wall must be inserted in to the diaphragm retainer with the proper side facing into the groove in the retainer. The deeper side of the diaphragm will always face into the retainer groove. This kit includes diaphragms, flapper valves, plastic slip washers and bottom pressure chamber gasket; some models also include rubber plug sets to seal the flapper valve housing. Package Description: 1 Kit Serving Size: .. Number of Servings: .. Complete Rebuild Kit to repair one air pump Kit Contents (2) x LP20 Diaphragm (4) x LP20 Washer (4) x LP20 Valve (2) x LP21 Diaphragm (4) x LP21 Washer (4) x Air Inlet and Outlet Rubber Stopper Set LP20 (4) x Air Inlet and Outlet Rubber Stopper Set LP21 (1) x Bottom Silicone Gasket (1) x Instructions INSTALLATION INSTRUCTIONS: This kit includes diaphragms, flapper valves, plastic slip washers and bottom pressure chamber gasket; some models also include rubber plug sets to seal the Flapper Valve housings. • Work in clear work space to avoid loosing parts. • Organize screws as they are removed to avoid mix-ups. • There are two diaphragm assemblies on opposite sides of the motor; work on one side at a time. 1. Disconnect the pump from the AC receptacle and from any hoses. 2. Remove the cover lid by removing screws on bottom. 3. Unscrew the diaphragm / flapper combination assembly from either end of the pump and separate the two parts. Parts may vary from those pictured here. Note that for the AP-20 kit there are two different sets of diaphragm parts to accommodate two different models. Use the set that matches your model and discard the other. Pry out the rubber diaphragm and clean the diaphragm housing with soap and water before re-assembly. 4. Open the Flapper Valve Housing, remove the flapper valves and replace with the new ones. Be sure to maintain the same front and back side orientation of the flapper valves. 5. Remove the round diaphragm completely and replace with the new Diaphragm and slip washers supplied. 6. Replace the diaphragm / flapper assembly and refasten. 7. Replace the cover lid. Caution: FOR YOUR PROTECTION, ALWAYS UNPLUG THE UNIT FROM ITS POWER SOURCE BEFORE INSTALLING OR SERVICING. SHOULD THE UNIT APPEAR TO BE NOT WORKING, DO NOT ATTEMPT TO REACH, REMOVE, OR DISASSEMBLE BEFORE DISCONNECTING FROM THE POWER SOURCE. 1. This pump is solely intended to pump air. Do not use for oil, solvents, or any petroleum products (gasoline, diesel, etc.). 2. ALWAYS use a properly grounded AC outlet. Do not immerse the pump's plug in water or attempt to plug into electric receptacle if plug is wet. 3. Provide a "drip loop" for the line cord. This is a loop in the cord below the level of the receptacle or plug that prevents water from traveling along the cord in the direction of the receptacle. 4. Be sure that a ground fault circuit interrupter (GFCI) is installed in the branch circuit supplying the aquarium, fountain, or pond equipment. 5. NEVER remove the ground pin from the plug.

## Images

![PONDMASTER - Diaphragm Replacement Kit for AP-20 Aquarium Air Pump - 1 Kit - Image 1](https://res.cloudinary.com/dred08yjx/image/fetch/http://cdn.shopify.com/s/files/1/1971/0887/products/308156_grande.jpg?v=1517275048)
![PONDMASTER - Diaphragm Replacement Kit for AP-20 Aquarium Air Pump - 1 Kit - Image 2](https://res.cloudinary.com/dred08yjx/image/fetch/https://cdn.shopify.com/s/files/1/1971/0887/products/308156_grande.jpg?v=1517275048)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-02-08*