Pentair 273512 Air Purger with O-Ring for Pool Filter

Replace a worn, damaged, or leaking air relief valve with the Pentair 273512 air relief valve with O-ring. This replacement part releases trapped air from certain Pentair filters and multiport valves used on pool and spa filtration systems.

The O-ring is included to ensure a proper seal at the installation point. This part is suitable for Nautilus and FNS diatomaceous earth filters, Triton C sand filters, and certain 1 1/2 in. HiFlow multiport valves.

Key features

• Replacement air relief valve
• Pentair brand
• Part number: 273512
• Seal
• Helps release trapped air from the system
• Suitable for certain Pentair sand and diatomaceous earth filters
• Compatible with certain HiFlow multiport valves
• Part suitable for pool and spa systems
• Convenient replacement for a worn or leaking air relief valve

Air relief valve function

The air relief valve releases air accumulated inside the filter or valve. Once the air has been released, the system can operate with a tank properly filled with water and more stable pressure.

Replacement may be necessary when:

• Water is leaking around the air relief valve
• The O-ring is worn or damaged
• The air relief valve is cracked
• The part no longer closes properly
• Air remains trapped in the filter
• The part was damaged during servicing

Compatibility with Nautilus filters

Compatible with the following Pentair Nautilus diatomaceous earth filters:

• NS24
• NS36
• NS48
• NS60
• NS72

Compatibility with Nautilus Plus filters

Compatible with the following Pentair Nautilus Plus diatomaceous earth filters:

• NSP24
• NSP36
• NSP48
• NSP60
• NSP72

Compatibility with FNS filters

Compatible with the following Pentair FNS diatomaceous earth filters:

• FNS24
• FNS36
• FNS48
• FNS60

Compatibility with Triton C filters

Compatible with certain Pentair Triton C and Triton C-3 sand filters, including:

• TR100C
• TR140C

Compatibility with HiFlow valves

The Pentair 273512 air relief valve is also suitable for certain six-position 1 1/2 in. HiFlow multiport valves used on pool and spa filtration systems.

Avant de commander, vérifiez le numéro de modèle de votre filtre ou de votre valve ainsi que le numéro inscrit sur la pièce existante.

Before ordering, check your filter or valve model number as well as the number printed on the existing part.

Installation and safety

1. Before removing or replacing the air relief valve:
2. Stop the pump completely.
3. Disconnect the system's power supply.
4. Close the necessary valves.
5. Fully release the filter pressure.
6. Carefully remove the old air relief valve.
7. Clean the contact surface.
8. Install the new air relief valve with its O-ring.

Restart the system and check for leaks.

Never remove an air relief valve while the filter is under pressure.

• Installation tips
• Lightly lubricate the seal with a silicone-based lubricant designed for pool equipment
• Do not use petroleum-based lubricant
• Tighten the part by hand
• Avoid overtightening to prevent damage to the threads
• Check the condition of the seal during each maintenance service

Replace the part if it is cracked or deformed

Technical specifications
Product

Air relief valve with O-ring
Brand

Pentair
273512

Part number
273512Z

Possible alternate reference
Seal

O-ring included
Compatible filters

Nautilus, Nautilus Plus, FNS, Triton C, and Triton C-3
Compatible valves

Certain six-position 1 1/2 in. HiFlow multiport valves
Application

Pool and spa filtration systems
Part type

Package contents

• 1 Pentair 273512 air relief valve
• 1 O-ring

The other filter or valve components are sold separately.

Maintain efficient filtration

The Pentair 273512 air relief valve with O-ring is a simple solution for replacing a worn or leaking part. Its compatibility with several Nautilus, FNS, and Triton filters, as well as certain HiFlow valves, makes it a practical part for maintaining Pentair filtration systems.

Available now at Piscine Hippocampe.

Your purchase at Piscine Hippocampe

Our Delson team can advise you based on your equipment model, photos, and part references. Prepare this information to make selection easier and verify the necessary accessories.