Quick answer
The Elvie Stride 2 Connect Kit (Double) is the part that enables suction from the pump to the cups. Attach the kit to your breast shields, push the tubing firmly onto both the kit and the pump, and confirm the diaphragm and stopper are seated before you start. For single pumping, cap the unused side; for double pumping, connect both sides and check each tubing connection for a tight seal.
What the Connect Kit (Double) actually does
The Connect Kit is not a spare part you can skip. Without it, suction cannot reach the cups, so the pump will run but you will not express milk. The Double kit also gives you the flexibility to set up for single or double pumping from the same components, which matters if your routine changes from one session to the next. Keep the diaphragm and stopper in good condition because they create the closed system that separates milk from the pump air path.
Before you assemble: check parts and hygiene
Inspect the diaphragm and stopper for cracks, stretching, or milk residue. A worn or misaligned diaphragm is the most common reason a correctly connected kit still loses suction. Wash and fully air-dry all parts that contact milk before assembly; trapped water can weaken the seal and introduce moisture into the tubing. If you are replacing the diaphragm and stopper, use the Elvie Stride 2 Diaphragm and Stopper (2 pack), which is compatible with Elvie Stride 2 only.
How to attach the tubing without damaging the connectors
Push the tubing onto the kit connector until it stops, then give a gentle tug to confirm it is seated. Do the same at the pump end. Avoid pulling the tubing out by the hose; grip the connector instead. If you need to detach the tubing between sessions, twist slightly as you pull rather than yanking straight out. This preserves the fit and reduces the chance of a slow leak that is hard to spot.
Switching between single and double pumping
For double pumping, connect both cups and both tubing lines. For single pumping, leave one side capped or disconnected according to the kit setup, and make sure the open connector is not left exposed to dust or moisture. If you switch often, decide on one storage spot for the cap so you are not searching for it mid-session. Always recheck the diaphragm and stopper after switching because handling can shift them.
When to replace the Connect Kit or tubing
Replace the kit or tubing if you see cracks, cloudiness, or a persistent loss of suction that does not improve after reseating the diaphragm and stopper. Tubing that will not stay on the connector, or that has been stretched, should be replaced rather than taped or forced. If you are building a spare setup, the Elvie Pump and Extra Set of Washable Parts includes an extra set of washable parts so you are not stuck cleaning one set while you pump.
Step-by-step: Elvie Stride 2 Connect Kit (Double) setup
- Inspect and clean all parts: Check the diaphragm, stopper, breast shields, and tubing for damage or residue. Wash milk-contact parts and let them air-dry completely. Checkpoint: no cracks, no trapped water, and the diaphragm sits flat.
- Seat the diaphragm and stopper: Attach the diaphragm and stopper to the breast shields so the closed system is secure. Press evenly around the edge rather than one side at a time. Common mistake: a partially seated diaphragm causes suction loss even when tubing is connected correctly.
- Attach the Connect Kit to the shields: Fit the Connect Kit (Double) onto the breast shields. Confirm it is fully seated and not twisted. Checkpoint: the kit should not wobble or lift away from the shield.
- Connect the tubing to the kit: Push the tubing onto the kit connector until it stops, then tug gently to test. Repeat at the pump end. Common mistake: pulling the tubing by the hose instead of the connector, which stretches the fit over time.
- Choose single or double pumping: For double pumping, connect both sides. For single pumping, cap or disconnect the unused side according to the kit setup. Checkpoint: the unused connector is capped or protected, not left open.
- Test suction before you settle in: Turn the pump on briefly and feel for suction at each cup. If one side is weak, reseat the diaphragm and stopper and recheck the tubing. Next step: if suction still drops, replace the diaphragm and stopper or the tubing rather than continuing to troubleshoot mid-session.
Parts that matter for this setup
- Elvie Stride 2 Connect Kit (Double): Use the Elvie Stride 2 Connect Kit to enable suction to the Cups. The Double kit can also be used to set up your pump for single or double pumping. This is the component that makes suction possible, and the Double version gives you both single and double pumping options from one kit.
- Elvie Stride 2 Diaphragm and Stopper (2 pack): Compatible with Elvie Stride 2 only. Replacement Diaphragm and Stopper designed for Elvie Stride 2 attaches to the Breast Shields to create a secure, closed pump system for maximum hygiene. Dishwasher, BPA free, and food safe. A correctly seated diaphragm and stopper protect suction and hygiene; being dishwasher safe simplifies cleaning between sessions.
- Elvie Pump and Extra Set of Washable Parts: Elvie Pump - Ultra-quiet, slimline wearable electric breast pump (5oz). The quietest slimline breast pump with discreet app control. Elvie Pump is our most awarded breast pump featuring Smart Rhythms to boost your milk flow. Plus, an extra set of washable parts because when life gets a little busy it's always useful to have a spare on hand. If you want a spare washable parts set so you are not cleaning under pressure, this bundle keeps a backup ready.
