Air Bellow, Herga, 1-3/32″ Diameter, Domed, Smooth, Small | 6435-04

🔧 What this part is

Air Bellow, Herga, 1-3/32" Diameter, Domed, Smooth, Small, part number 6435-04. The bellows is the rubber diaphragm inside an air button; when it splits, the button stops switching.

Size as listed: 1-3/32".

✅ Check before you order

• Measure the part you are replacing – this one is listed as 1-3/32".
• The number on the old part should read 6435-04, or the maker’s equivalent.
• Not sure? Send us a photo of the old part and any number on it, and we will tell you whether this is the one.

📌 Also on this listing

Replacement Bellows
Used in many air buttons and deck controls
Sm. domed air bellow w/smooth shaft

P:A:T # = n/a
Hergair # = 6435-04

🔧 Parts and fittings for this

What is an Air Button?

An air button, also known as a spa air switch or pneumatic switch, is a control device commonly used in hot tubs, spas, and whirlpool baths. It allows users to operate various functions of the hot tub or spa, such as turning on the jets, lights, or other accessories, without the need for electrical switches near the water.

Here's how an air button typically works:

1. Button Placement: Air buttons are usually mounted on the spa's or hot tub's exterior, often around the top rim. They consist of a decorative button or cap that is visible and easily accessible to the user.

2. Tubing: Inside the spa or hot tub, a flexible plastic tubing or air hose connects the air button to specific components or functions, such as jet pumps, lights, or blowers.

3. Pneumatic System: When the air button is pressed, it sends a burst of air through the tubing to a pneumatic air switch located in the hot tub's equipment area. This air pressure activates the switch, which, in turn, controls the corresponding electrical component.

4. Function Control: Depending on the configuration, pressing the air button might activate jets for a hydrotherapy massage, turn on underwater lights, or operate other features like a blower or a waterfall.

5. Safety: One of the primary advantages of air buttons is their safety aspect. Since they are air-powered and not connected to electricity, there's no risk of electric shock when using them in or around the water.

6. Easy Installation: Air buttons are relatively easy to install and require minimal electrical wiring. This makes them a popular choice for spa and hot tub manufacturers.

7. Customization: Hot tub owners often have the flexibility to customize the functions controlled by air buttons to suit their preferences and needs.

In summary, an air button is a user-friendly control mechanism used in hot tubs and spas, allowing users to activate various functions through the simple act of pressing a button, while maintaining safety by using air pressure instead of direct electrical connections near water.

What do I do if my Air Button is not working?

f your hot tub's air button is not working, it can be frustrating, but there are several troubleshooting steps you can take to identify and potentially resolve the issue. Here's what to do if your air button isn't functioning:

1. Check for Power:

• Ensure that your hot tub has power. Sometimes, the issue may not be with the air button itself but with the overall power supply to the tub. Check if the circuit breaker or GFCI (Ground Fault Circuit Interrupter) has tripped. If it has, reset it.

2. Inspect the Air Tubing:

• The air tubing that connects the air button to the pneumatic air switch in the equipment area should be intact and free of kinks, blockages, or damage. Any damage to the tubing can prevent air pressure from reaching the switch. If the tubing is damaged, replace it.

3. Check for Air Leaks:

• Inspect the air button and tubing connections for any air leaks. Leaks can disrupt the air pressure needed to activate the switch. Ensure that the connections are tight and that there are no cracks or gaps.

4. Test the Air Button:

• Remove the air button's decorative cap or cover and press the button itself. You should hear or feel a slight rush of air when you press it. If there is no sensation or sound, it may indicate a blockage or malfunction in the air button itself.

5. Examine the Pneumatic Air Switch:

• The pneumatic air switch is usually located in the hot tub's equipment area. Ensure that it is properly connected to the air tubing and that there are no obstructions in the switch itself.

6. Confirm the Functionality of Components:

• If your hot tub's air button controls multiple functions like jets, lights, or other accessories, check if any of these components are working through alternative means. For example, if the jets are not turning on using the air button, try activating them using the control panel. If they work using the control panel, it suggests that the problem may be with the air button or tubing.

If all else fails, you might need to replace the air button.

How do I replace an Air Button?

Replacing an air button in your hot tub or spa can be a straightforward process. Here are the general steps to follow:

Tools and Materials You'll Need:

• Replacement air button and tubing (ensure they are compatible with your hot tub model)
• Screwdriver
• Pipe cutter or scissors (for cutting tubing)
• Sealant (optional)
• Teflon tape (optional)

Steps to Replace an Air Button:

1. Turn off the Power: Before you begin any work on your hot tub, it's crucial to turn off the power at the circuit breaker to ensure your safety. Water and electricity are a dangerous combination.

2. Access the Old Air Button: Remove any decorative cover or cap from the old air button. In most cases, you can do this by turning the cap counterclockwise. Once removed, you'll see the air button assembly.

3. Disconnect Tubing: Carefully detach the flexible tubing connected to the old air button. This tubing runs from the air button to the pneumatic air switch located in the hot tub's equipment area. Gently pull the tubing out from the air button, making sure not to damage it.

4. Remove the Old Air Button: Use a screwdriver to unscrew the old air button assembly from the spa or hot tub's surface. Once the screws are removed, you can lift the assembly out.

5. Prepare the New Air Button: If your replacement air button is not preassembled, follow the manufacturer's instructions to put it together. This typically involves inserting the tubing into the new air button.

6. Position the New Air Button: Place the new air button assembly in the same location where the old one was. Align it properly and ensure it fits securely.

7. Connect Tubing: Attach the tubing from the new air button to the existing tubing coming from the pneumatic air switch. You may need to cut the tubing to the appropriate length if it's too long. Use a pipe cutter or scissors for this. Ensure the connection is secure.

8. Seal (Optional): If necessary, apply a small amount of sealant or Teflon tape to the threads of the air button assembly to prevent water from seeping in. Be careful not to use too much, as excess sealant can obstruct the air button's operation.

9. Secure the New Air Button: Use a screwdriver to fasten the new air button assembly in place. Ensure it is snug and won't come loose.

10. Test the New Air Button: Restore power to the hot tub at the circuit breaker. Test the new air button to ensure it operates the desired functions correctly, such as turning on the jets or lights. If it works as expected, you've successfully replaced the air button.

Remember to follow the specific instructions provided with your replacement air button, as the installation process may vary slightly depending on the make and model of your hot tub or spa. If you're unsure about any step, it's always a good idea to consult the manufacturer's manual or get in touch!