400G Pump Diaphragm

Name: 400G Pump Diaphragm
SKU: DIAPHRAM400G
Availability: OutOfStock

P227,70

The 400G Pump Diaphragm serves as a durable replacement diaphragm for 400 GPD RO booster pumps. It helps maintain stable pressure and smooth water flow, extends pump lifespan, and supports efficient water purification in both domestic and commercial RO systems. Its chemical‑resistant rubber construction ensures reliability and long-term performance.

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Description
Shipping & Return

400G Pump Diaphragm

The 400 GPD pump Diaphragm plays a crucial role in any 400 GPD reverse‑osmosis (RO) booster pump. It seals the valve block, the lower base, and the pump‑head cover — while also separating the water chamber from the motor assembly.

Because it creates this sealed barrier, the diaphragm prevents water from reaching the motor; this safeguards the pump’s electric components and avoids potential damage. Additionally, by maintaining a proper seal and correct pressure, the diaphragm ensures that your RO system delivers consistent flow and pressure, which is essential for optimal membrane performance.

Over time, diaphragms tend to lose elasticity or suffer wear, which can cause pressure loss or leaks between the base and cover, and even allow water ingress into the motor compartment. Replacing a worn diaphragm with the 400G Pump Diaphragm restores proper sealing, recovers pressure levels, and prevents leakage or motor damage.

Made from non‑porous, chemical‑resistant vulcanized rubber, this diaphragm withstands the demands of repeated cycles in RO setups. Under normal household use, it delivers reliable service for about 3–4 years before needing replacement.

In short: installing the 400G Pump Diaphragm ensures safer, more efficient, and longer‑lasting RO booster pump performance — whether you run your system at home, in a water shop, or for light commercial purification.

Key Features & Benefits

Direct replacement for 400 GPD RO pumps — ensures compatibility and correct fit.
Seals valve block, base, and pump cover — prevents water leakage and protects motor from moisture ingress.
Maintains stable pressure and flow — essential for consistent RO membrane performance.
Made of durable, chemical‑resistant rubber — resists wear and chemical exposure for long service life.
Easy to replace — keeps maintenance simple, making it an ideal part for routine RO pump upkeep.
Extends pump life and reliability — prevents motor damage, reduces leaks, and maintains performance over time.

Typical Applications & Use Cases

You should consider using the 400G Pump Diaphragm for:

Maintenance or repair of 400 GPD RO booster pumps in domestic water‑purification systems.
Water shops, bottled water facilities, or small commercial RO setups that require stable and safe performance.
Regular replacement schedules (every 3–4 years) to avoid pump wear, leaks, or motor damage.
Upgrading older or worn-out pump heads to restore pressure, efficiency, and system reliability.
Any clean-water filtration system where a 400 GPD pump is used (e.g., under-sink RO, countertop purifiers, commercial dispensers).

Return And Refund Policy

INSTORE EXCHANGES AND REFUNDS

For your convenience, item(s) purchased online may be exchanged or refunded at any Puritech store within South Africa, provided all online return policy conditions are met. A refund will be provided to you by crediting your original method of payment. Please note that cash refunds will not be provided under any circumstances and courier charges cannot be refunded.
Item(s) purchased at any Of Our store within South Africa can only be returned at a Puritech store within South Africa.

Puritech Online Returns Policy

There may be times when you will need to return an item purchased from us. Our Returns Policy is designed to assist you with your return. The benefits given by our Returns Policy are in addition to other rights and remedies you may have as a consumer under the Consumer Protection Act (CPA), as well as any other applicable acts.

If you wish to return any item(s) you have purchased, you can either return the item(s) via courier to our online store or in-person to a Puritech store within South Africa (only) within 14 days from the date of purchase…

We encourage you to return your parcel via Fast Way, Courier Guy, FedEx, or ParcelIt traceable courier services as all returned parcels remain the responsibility of the purchaser until received by Puritech.

Store purchases cannot be returned or refunded online.

Returns Policy Conditions

At Puritech we want to ensure you love the items you purchase. If you have changed your mind on a purchase we will exchange your item or refund your original method of payment provided that:

You return the item within 14 days (inclusive) from the date of purchase.
You produce your original Puritech invoice (receipt) when you return the item
The item is in original saleable condition:
With all original tags still attached
In an unopened and unused state
A return form is completed and accompanies your item(s) being returned
In original packaging

If you are not able to comply with these requirements, Puritech reserves the right to refuse an exchange or refund on change of mind items. Puritech will not accept a bank statement as proof of purchase.

We regret that we are unable to accept the exchange or return of the following items for change of mind for hygiene reasons:

Open Filters
Open Membranes
Used Reverse Osmosis Systems

Online Exchanges and Refunds

Online Exchanges

If you would like to exchange an item(s) for an alternative item(s), please complete the online Return Request form that is located within My Account under ‘My Orders’ prior to sending the item(s) back.

Exchanges can only be exchanged for the same value of the purchase price of the item being returned.

Your item (s) that you wish to return needs to be sent back to our online returns address with the relevant return documents, duly completed, and a tax invoice (receipt).

If the alternative item is no longer available, provided all the Returns Policy Conditions are met, a refund will be provided to you crediting your original method of payment. All return courier costs will be for your own expense and this will be deducted from your refund amount.

Online Refunds

To obtain a refund please fill out the online Return Request (RMA) form that is located within My Account under ‘My Orders’ prior to sending the item(s) back.

A refund will be provided to you crediting your original method of payment, providing all the Returns Policy Conditions are met and our warehouse has received the original item that is being returned. Cash refunds will not be provided under any circumstances.

COMPLETING A RETURNS REQUEST FORM ONLINE

Log into your Puritech “My Account” and go to “My Orders”.
Click on the order that contains the item(s) that you wish to return or request an exchange for and click on the returns button.
After you have submitted your return request, one of our friendly staff members will get in contact with you to organize a collection.
Once you have sent your item(s) back to our warehouse, our warehouse will authorize the refund.

Before sending, please ensure all details on this form are correct. You will also need to write the returns number on the outside of the parcel. You will be notified by email of the status of your exchange or refund.