Pentair Bulkhead Ring Adapter Nut for Minimax Plus 200-400 274440Z
Pentair
SKU: 274440z
Pentair 274440Z Black Bulkhead Adapter Nut for FullFlow Valves and MiniMax Heater Applications
The Pentair 274440Z Bulkhead Adapter Nut is a genuine replacement black adapter nut used on compatible Pentair pool and spa equipment. This threaded nut is commonly used to secure bulkhead, union, or plumbing adapter connections on select Pentair valve and heater assemblies.
This replacement part is ideal for repairing worn, cracked, missing, or damaged adapter nuts that are no longer securing the connection properly. A properly installed adapter nut helps maintain a tight connection and reduce leaks around the valve or heater plumbing connection.
Product Features
- Genuine Pentair replacement part
- Manufacturer part number: 274440Z
- Black bulkhead / adapter nut
- Used on compatible Pentair FullFlow valve assemblies
- Also cross-referenced for select MiniMax heater bulkhead adapter applications
- Helps secure plumbing adapter and bulkhead connections
- Useful for replacing a cracked, stripped, worn, or missing adapter nut
Product Details
| Brand | Pentair |
| Part Number | 274440Z |
| Alternate Part Number | 274440 |
| Product Type | Bulkhead Adapter Nut |
| Color | Black |
| Application | Pool valve and heater plumbing connection repair |
| UPC | 788379675219 |
Compatibility
- Pentair FullFlow D.E. valve applications
- Pentair FullFlow sand valve applications
- Select Pentair FullFlow valve assemblies requiring adapter nut 274440 or 274440Z
- Select Pentair MiniMax Plus, MiniMax NT, MiniMax NT LN, MiniMax NT STD, and MiniMax NT TSI heater applications
- Compatible equipment requiring the black 274440Z bulkhead adapter nut
Common Uses
- Replacing a cracked or damaged adapter nut
- Repairing leaks around a valve or heater bulkhead connection
- Securing plumbing adapters on compatible Pentair equipment
- Servicing FullFlow backwash valve connections
- Replacing a stripped or worn threaded bulkhead nut
Important Notes
- This item is the adapter nut only.
- O-rings, unions, adapters, bulkhead fittings, valve parts, and heater components are sold separately unless otherwise stated.
- Verify your equipment model and existing part number before ordering.
- This part is not a complete valve, union kit, heater header, or plumbing adapter assembly.
- If the bulkhead fitting, valve body, heater header, or sealing surface is cracked, replacing the nut alone may not stop the leak.
Installation Notes
- Turn off the pool pump and heater before servicing the plumbing connection.
- Relieve system pressure before removing any valve or heater plumbing parts.
- Inspect nearby O-rings and sealing surfaces before installing the replacement nut.
- Clean threads and sealing surfaces before reassembly.
- Use only pool-safe silicone lubricant on O-rings when needed.
- Hand-tighten first and avoid overtightening, as excessive force can crack plastic fittings or equipment housings.
- Restart the system and check carefully for leaks after installation.
Maintenance Tips
- Inspect adapter nuts and bulkhead connections periodically for cracks, leaks, or thread damage.
- Replace worn O-rings when servicing plumbing connections.
- Support nearby plumbing to reduce stress on equipment fittings.
- Repair leaks promptly to help prevent water damage around the equipment pad.
- Maintain proper pool water chemistry to help reduce scale buildup around fittings and seals.
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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