Pentair Multiport/Slide Valve Shaft O-Ring Kit | JV18
Pentair
SKU: JV18
Pentair Valve Stem / Shaft O-Ring (O-47) | JV18
The Pentair JV18 is a replacement valve stem/shaft O-ring (commonly referenced as O-47) used on select Pentair valves and filter valve assemblies. This small seal helps prevent leaks and air intrusion around the moving shaft/stem area, restoring smoother operation and more reliable sealing when the original O-ring becomes flattened, brittle, swollen, or nicked.
Common Applications
- Pentair side-mount multiport valves (where the parts list specifies JV18 / O-47)
- Pentair PVC slide valves (where specified)
- Pentair SM / SMBW 2000 Series filter valve assemblies (rotor/valve assemblies where JV18 is listed)
- Other Pentair equipment that calls out JV18 for the shaft/stem O-ring position
Key Features
- Stops seepage around the valve stem/shaft area when the existing O-ring is worn.
- Helps prevent air leaks that can cause bubbles, loss of prime, or inconsistent operation on some systems.
- Direct replacement for the JV18 O-ring location—simple, inexpensive maintenance part.
- Common cross-reference: often listed as O-47 (naming varies by catalog and supplier).
Specifications
- Brand: Pentair
- Part Number: JV18
- Part Type: Valve stem/shaft O-ring
- Common Reference: O-47 (cross-reference)
- Quantity: Sold individually
When to Replace
- Dripping or moisture around the valve stem/shaft area
- Valve feels “grabby” or doesn’t move smoothly after lubrication/cleaning
- O-ring is visibly cracked, flattened, swollen, or nicked
- Seepage begins after seasonal service or after disassembly/reassembly
Installation Notes
- Turn off the pump and relieve system pressure before servicing any valve.
- Remove the stem/shaft component as required for your specific valve design.
- Clean the O-ring groove and sealing surfaces before installing the new O-ring.
- Lightly lubricate with silicone pool lubricant (never petroleum-based) and seat evenly without twisting.
- Reassemble and check for leaks under normal operating pressure.
Related Products
- Search Aqua Pool Supply for JV18
- Silicone lubricant for O-rings and seals
- Multiport valve O-rings and seals
- Slide valve seals and O-rings
Maintenance Tips
- Replace small stem/shaft O-rings proactively during valve service—old seals often fail shortly after reassembly.
- Use only silicone-based lube in light amounts; too much lubricant can attract debris and accelerate wear.
- Keep valve areas clean and protected from direct sun when possible to extend the life of rubber seals.
- If leaking continues after O-ring replacement, inspect the stem/shaft and bore for scratches or wear that can prevent sealing.
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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