How to Choose the Right Dia-Vac Diaphragm Repair Kit

Ordering the right Dia-Vac diaphragm repair kit is straightforward when you know where to look. This guide shows you how to find your kit number, match it to the correct product, and get your pump back online quickly with minimal downtime.

Quick Answer: Find the Repair Kit # on Your Pump Label

The fastest way to identify the correct diaphragm repair kit is to locate the Repair Kit # on your Dia-Vac pump’s front label. This number appears directly below the model number on most pumps and provides the exact kit specification for your unit.

Where to look on the label

The Repair Kit # is your key to ordering the correct parts. Check the front face of your Dia-Vac pump for a metal identification label. The label includes several important numbers.

What to write down

Before you start shopping, record these three items from your pump label:

Repair Kit # (often the third line) – This is your primary identifier
MDL # (Model Number) – Useful as a backup if the Repair Kit # is unclear
SER # (Serial Number) – Helps us provide additional support if needed

Having this information ready makes ordering fast and accurate.

Which Kit Do I Need for My Pump?

You have three options for identifying the correct repair kit, listed from most reliable to backup methods:

Option 1 (Best): Match the “Repair Kit #” from the Tag

Use the Repair Kit # from your pump label to find the exact kit. This number corresponds directly to the kit engineered for your specific pump configuration, ensuring proper fit and performance.

Option 2: If Missing or Unclear

If your label is worn or the Repair Kit # is illegible, you can browse kits by pump series using your model number. While this method works, it may require additional confirmation of your specific configuration, especially for pumps with multiple kit options within the same series.

Option 3: Email for Confirmation

When you’re uncertain or can’t locate your kit number in our listings, email a clear photo of your pump label to whatsmykit@airdimensions.com. Our team will identify the correct kit and respond quickly with ordering information. This service is especially helpful for older pumps or units with damaged labels.

Find Your Repair Kit Number: Step-by-Step

Follow these simple steps to locate your Repair Kit # and order with confidence:

Locate the front label on the pump: Find the metal identification label mounted on the front of your Dia-Vac pump. This label is often positioned where it’s easily visible during normal operation.
Identify the Model (MDL #) and Serial (SER #): Note the model number (MDL #) and serial number (SER #) from the label. These numbers provide important context about your pump’s age and configuration.
Find the “Repair Kit #” line and confirm the digits: Locate the line labeled “Repair Kit #” on your pump tag. This number often appears as a 5-digit code. Write it down carefully, double-checking that you’ve recorded all digits correctly. Transposed numbers are a common ordering mistake.

Shop by Repair Kit #

How to use this table

Match your Repair Kit # from the pump label to the corresponding row below, confirm the material and series information matches your application, then click the shop link to order directly.

Repair Kit #	Material	Fit (Series)	Notes
11461	All-Teflon	B Series	Maximum chemical resistance
11711	All-Teflon	J Series	Maximum chemical resistance
11305	Teflon + EPDM	M Series	Balanced sealing and compatibility
11312	All-Teflon (Heated Head)	M Series Heated	For heated head configurations
11005	Teflon + EPDM	R Series	Balanced sealing and compatibility
11011	All-Teflon	R Series	Maximum chemical resistance

Note: This table shows our most common kits. If your Repair Kit # doesn’t appear here, see the section below on what to do if your kit isn’t listed.

Browse by Pump Series

Prefer to browse by pump series? Use these category links to explore all available kits for your Dia-Vac pump line:

Picking the Right Diaphragm Material

Understanding diaphragm materials helps you verify you’re ordering the correct kit for your application.

When All-Teflon is typically a better fit

All-Teflon diaphragm kits provide maximum chemical resistance and temperature tolerance. Choose all-Teflon when your application involves aggressive chemicals, solvents, or acids that attack standard elastomers, high operating temperatures that would degrade EPDM components, or when you need the broadest possible chemical compatibility.

When Teflon + EPDM is typically a better fit

Teflon + EPDM kits combine Teflon’s chemical resistance with EPDM’s excellent sealing properties. This combination works well for general laboratory vacuum applications, processes with moderate chemical exposure, and applications where balanced performance and cost-effectiveness matter.

When to ask for support

When material selection is unclear, refer to the Repair Kit # on your pump label. It specifies the material configuration your pump was designed for. You can also contact our support team at whatsmykit@airdimensions.com with questions about material compatibility for your specific application.

How Easy Are Dia-Vac Repair Kits to Install?

Most technicians complete Dia-Vac diaphragm kit installations in minutes with basic hand tools. The process is straightforward when you follow the included instructions and use proper assembly techniques.

What most customers do before they start

Successful installations begin with preparation. Set up a clean workspace free from contamination. Verify all parts from your kit are present and undamaged. Inspect pump head surfaces for damage, corrosion, or residue that could affect sealing. Having everything ready before you begin prevents interruptions during installation.

What to check after install

After completing your installation, run these quick checks before returning the pump to service. Confirm vacuum performance meets specifications for your application. Check all connections for air leaks using soapy water or a leak detector. Listen for abnormal sounds like chattering, grinding, or excessive vibration. These post-installation checks catch problems before they cause downtime.

When to stop and ask for help

If vacuum performance remains poor after installation, if you notice unusual noises or vibration, or if you’re uncertain about any installation step, stop and contact technical support. It’s better to ask questions than to risk damaging your pump or compromising your process.

Recommended Tool: RAST-101 Assembly Tool

The RAST-101 Diaphragm Repair Kit Assembly Tool makes diaphragm installation significantly faster and more reliable.

What the tool helps with

The RAST-101 ensures proper diaphragm alignment during installation, reduces the risk of pinching or tearing delicate Teflon components, speeds up installation by holding parts in position while you tighten fasteners, and improves consistency across multiple installations. Many technicians report cutting installation time in half when using this tool.

Who should add it to their order

Consider adding the RAST-101 if you maintain multiple Dia-Vac pumps, perform frequent repairs or preventive maintenance, want to reduce the skill level required for successful installations, or value tools that improve consistency and reduce errors. The tool pays for itself quickly in time savings and reduced risk of installation mistakes.

Common Mistakes When Ordering a Kit

Mistake 1: Using the model number instead of the Repair Kit #

The model number tells you the pump series but doesn’t specify which kit configuration your specific pump requires. Always use the Repair Kit # when available, it’s the precise identifier for your kit.

Mistake 2: Misreading digits on the label (and how to double-check)

A single wrong digit leads to ordering the wrong kit. Double-check your Repair Kit # carefully. Common errors include transposing numbers or misreading worn digits on older labels. When in doubt, email a photo to whatsmykit@airdimensions.com for confirmation.

Mistake 3: Assuming the kit is not available because it is not listed on the site

We carry approximately 20 additional Dia-Vac repair kits that aren’t yet listed on our website. If you don’t see your Repair Kit # in our product listings, don’t assume it’s unavailable. Email your kit number or a label photo to whatsmykit@airdimensions.com and we’ll confirm availability and provide ordering information. Most unlisted kits are available and can be requested via the email above.

Ready to order?

Find your Repair Kit # on your pump label and shop the matching kit today. If you don’t see your kit listed or need help identifying the right part, email whatsmykit@airdimensions.com with your label information. We’re here to help you get the right part fast and minimize your downtime.

FAQs

The Repair Kit # appears on the metal identification label on the front of your pump, often on the third line below the model number and serial number.

Email a photo of your pump label (even if worn) or any visible identification numbers to whatsmykit@airdimensions.com. Our team can often identify your kit from partial label information, model numbers, or pump features visible in photos.

Your model number indicates the pump series but may not specify the exact kit configuration. While you can browse kits by series using your model number, confirming the specific Repair Kit # from your label ensures you receive the correct kit for your pump’s configuration.

All-Teflon kits provide maximum chemical resistance and temperature tolerance for aggressive applications. Teflon + EPDM kits combine Teflon’s chemical resistance with EPDM’s excellent sealing properties, offering balanced performance for general laboratory vacuum applications. Your pump’s Repair Kit # specifies which material your unit requires.

The RAST-101 isn’t required but makes installation significantly faster and easier. It ensures proper alignment, reduces the risk of component damage, and is especially valuable if you maintain multiple pumps or perform frequent repairs.

Heated head pumps are clearly labeled on the pump identification tag and typically have visible heating elements or temperature controls on the pump head. If your Repair Kit # is 11312, you have a heated head configuration.

First, check for air leaks at all connections and fittings. Verify the pump head was properly torqued during assembly. Inspect intake and exhaust lines for restrictions. If performance issues persist, contact technical support, the problem may be unrelated to the diaphragm kit or could indicate additional service needs.