5-Pack Silicone Gas Water Heater Diaphragm 50mm Replacement Part

Gmarty 5-Pack Silicone Diaphragm for Gas Water Heaters

Keep your home gas water heater running at peak efficiency with these high-quality silicone replacement diaphragms. Designed for the MBJ5E gas water heater water pressure valve, this 5-pack gives you everything you need for maintenance or an emergency repair — all in one convenient set. Made in Mainland China.

Why Choose This Silicone Diaphragm?

• Premium Silicone Construction: Made from durable, high-grade silicone that holds up under high-pressure conditions and a wide range of environmental temperatures, ensuring a long service life.
• Accurate Pressure Sensing: The diaphragm precisely responds to water pressure fluctuations, allowing your water heater to quickly regulate temperature and maintain a stable, consistent water supply — helping conserve energy in the process.
• Simple Drop-In Installation: Engineered for hassle-free replacement, this diaphragm slots into place without the need for specialist tools, minimising downtime during maintenance.
• Optimised Heater Performance: Replacing a worn diaphragm restores proper pressure regulation, which protects heating efficiency and extends the overall service life of your gas water heater.
• 50mm Oval Inclined Hole Design: Specifically shaped to fit compatible gas water heater pressure valves — check your model's dimensions against the product specifications before purchasing.
• High Pressure Resistant: Built to withstand elevated water pressure, making it a reliable long-term replacement part for residential gas heater systems.

Specifications

Package Contents

• 5 × Silicone Water Heater Diaphragms

Important Notes

• Product images may not reflect actual size — please refer to the specifications above for exact dimensions.
• Minor measurement differences may occur due to manual measuring methods.
• Colour may vary slightly depending on your monitor settings.
• Please confirm compatibility with your water heater model before ordering.

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Frequently Asked Questions

Q: What size is this silicone water heater diaphragm?

A: The diaphragm measures 50mm with an oval inclined hole design. It is engineered to fit compatible gas water heater pressure valves such as the MBJ5E model. Always measure your existing diaphragm and confirm compatibility with your specific heater model before purchasing.

Q: How many diaphragms are included in the pack?

A: Each pack contains 5 silicone diaphragms, giving you spare units for future maintenance needs or for servicing multiple heater units.

Q: Is this diaphragm easy to install without professional tools?

A: Yes. This replacement diaphragm features a straightforward installation design that allows most homeowners to swap it in without specialist tools. Simply remove the worn diaphragm from the water pressure valve and seat the new silicone diaphragm in its place.

Q: Why is silicone used for water heater diaphragms?

A: Silicone is an ideal material for water heater diaphragms because it is highly flexible, durable, and resistant to high temperatures and pressures. It maintains its shape and sealing performance over extended periods, making it a reliable choice for gas water heater pressure valves.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.