Pentair TR140 Air Relief Tube | 150042
Pentair
SKU: 150042
Pentair 150042 Air Relief Tube (Black) for Triton II TR140 / TR140C (After 11/01/1999)
The Pentair 150042 is an OEM air relief tube used on select Pentair/PacFab Triton II sand filters. This internal tube routes trapped air to the filter’s air relief/bleed point so the tank can purge air during startup and after service. Replacing a cracked, brittle, or missing air relief tube helps restore proper venting, more stable pressure readings, and smoother priming.
Common Compatibility (Verify by Model & Build Date)
- Pentair/PacFab Triton II sand filter: TR140 (manufactured after 11/01/1999)
- Pentair Triton Commercial sand filters: TR140C (manufactured after 11/01/1999)
- Also commonly listed for TR100 and select commercial variants depending on configuration (confirm by parts diagram)
Important: Triton/Triton II internals vary by production version. Match your filter model and the “after 11/01/1999” application note before ordering.
Specifications
- Part number: 150042
- Material: Black plastic
- Approx. size: 29" length
- Tubing size: 1/4" ID x 3/8" OD
- Function: Internal air-vent routing for the filter air relief system
Common Symptoms of a Failed Air Relief Tube
- Air won’t purge properly from the filter after cleaning or start-up
- Persistent air in the tank (burping/foaming at returns) after priming is confirmed
- Unstable or inaccurate pressure readings caused by trapped air
- Visible cracks, brittleness, kinks, or a tube that won’t stay seated
Installation Notes
- Turn off the pump and relieve all filter pressure at the air relief before opening the tank.
- Remove the old tube and clean any debris or scale from the air relief passages and seating points.
- Install the new tube in the same routing/orientation as the original to prevent kinks and ensure proper venting.
- Reassemble, restart the system, then bleed air until a steady stream of water is present.
Related Products (Aqua Pool Supply)
- Pentair 150042 Air Relief Tube (Search)
- Triton II TR140 Filter Parts (Search)
- Triton TR140C Commercial Filter Parts (Search)
- Pentair Pressure Gauge 190059Z (Search)
- Filter Air Relief Assemblies & Parts (Search)
Maintenance Tips
- After any filter service, bleed air slowly until water runs steady—this helps prevent pressure spikes and erratic readings.
- If you repeatedly trap air, inspect the pump lid O-ring, drain plugs, and suction-side unions for air leaks.
- Keep the air relief path clean—scale and debris can restrict venting and shorten component life.
- Record your clean starting pressure; service the filter when pressure rises about 8–10 PSI over baseline (or per your filter label).
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.
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