Pentair 273512 Air Purger with O-Ring for Pool Filter

Replace a worn, damaged, or leaking air release valve with the Pentair 273512 air vent with O-ringThis replacement part allows trapped air to be evacuated from certain Pentair filters and multiport valves used in pool and spa filtration systems.

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

Main features

• Replacement air release valve
• Pentair brand
• Part number: 273512
• O-ring included
• Helps release trapped air in 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 release valve

Function of the air release valve

The air release valve allows trapped air inside the filter or valve to be released. Once the air is evacuated, the system can operate with a properly filled water tank and more stable pressure.

Replacement may be necessary when:

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

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 release valve is also suitable for certain 1 1/2 inch six-position HiFlow multiport valves used on pool and spa filtration systems.

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

Installation and safety

Before removing or replacing the vent:

1. Completely stop the pump.
2. Turn off the system’s power supply.
3. Close the necessary valves.
4. Fully release the filter pressure.
5. Carefully remove the old vent.
6. Clean the contact surface.
7. Install the new vent with its O-ring.
8. Restart the system and check for leaks.

Never remove a vent when the filter is under pressure.

Installation tips

• Lightly lubricate the O-ring with a silicone-based lubricant designed for pool equipment
• Do not use petroleum-based lubricants
• Tighten the part by hand
• Avoid overtightening to prevent damaging the threads
• Check the condition of the O-ring during each maintenance
• Replace the part if it is cracked or deformed

Technical specifications

Product
Air vent with O-ring

Brand
Pentair

Part number
273512

Other possible reference
273512Z

Sealing ring
O-ring included

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

Compatible valves
Certain 1 1/2 inch six-position HiFlow multiport valves

Application
Pool and spa filtration systems

Part type
Replacement part

Package contents

• 1 Pentair 273512 air vent
• 1 O-ring

Other filter or valve components are sold separately.

Maintain effective filtration

The Pentair 273512 air vent with O-ring is a simple solution to replace 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.