Hayward SX200G Manual Air Relief Cap

The Hayward SX200G is a replacement manual air relief cap designed for compatible sand filters used in-ground. It allows safe venting of trapped air from the filter tank, helping maintain proper flow and extend filter life.

Key Features

OEM replacement part for select sand filter models.
Enables manual release of air build-up in filter tank, reducing pressure spikes and airflow disruption.
Simple, tool-friendly installation — a smart stocking item for pool service kits.

Technical Specifications

Part Number: SX200G
Function: Manual air relief vent cap for sand filter tanks.
Application: In-ground sand filters in pool equipment systems.

Installation & Compatibility Notes

To install, shut off the filter pump and relieve system pressure. Unscrew the old air-relief cap from the filter tank lid, clean the seal surface, and install the new SX200G cap, ensuring it seats correctly. After installation, restore circulation and verify that the filter pressure returns to normal and that no air pockets remain.

Maintenance Tips

Inspect the cap periodically for cracks, worn threads or ineffective sealing — replace if any issue is found.
If the filter pressure climbs unusually or airflow seems reduced, use the cap to vent air and evaluate whether the filter media or laterals may also be at fault.
Keep the part in your standard service parts inventory — it’s a common replacement on filter maintenance visits.

Why Choose This Cap?

For pool service professionals and homeowners alike, the Hayward SX200G offers a cost-effective, OEM-matched solution to maintain safe and efficient filter operation. Proper air relief helps prevent premature media wear, improves circulation, and supports long-term filter performance.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.