Pentair Brass Filter Clamp Band Nut for FNS & Quad D.E. Filters | 194997Z

The Pentair 194997Z Machined Brass Clamp Band Nut is a genuine OEM replacement part designed for select Pentair FNS, FNS Plus, and Quad D.E. swimming pool filters. This precision-machined brass nut is used with compatible filter tank clamp assemblies to help secure the upper and lower filter tank sections during normal operation.

Manufactured to Pentair's original equipment specifications, the 194997Z provides a replacement for damaged, worn, stripped, or corroded clamp band nuts. Maintaining properly functioning clamp hardware is essential for safe operation of pressurized pool filtration equipment.

Product Features

• Genuine Pentair OEM Part: Original replacement hardware for compatible Pentair pool filters.
• Machined Brass Construction: Durable metal construction with precision-machined threads.
• Filter Clamp Hardware: Used to secure the tank clamp band assembly.
• Direct Replacement: Replaces worn, damaged, or stripped original clamp nuts on compatible assemblies.
• Corrosion Resistance: Brass construction provides resistance to corrosion in pool equipment environments.
• Multiple Filter Applications: Compatible with select Pentair FNS, FNS Plus, and Quad D.E. filter clamp assemblies.

Product Specifications

• Manufacturer: Pentair
• Manufacturer Part Number: 194997Z
• Previous Part Number: 194997
• Distributor Part Number: PAC-051-1928
• Product Type: Machined Filter Clamp Band Nut
• Material: Brass
• Application: Pool Filter Tank Clamp Assembly
• Compatible Filter Types: Select Pentair D.E. Filters
• Quantity: 1 Machined Brass Nut

Compatible Pentair Pool Filters

• Pentair FNS 24 D.E. Filter
• Pentair FNS 36 D.E. Filter
• Pentair FNS 48 D.E. Filter
• Pentair FNS 60 D.E. Filter
• Select Pentair FNS Plus D.E. Filters
• Pentair Quad D.E. 60 Filter
• Pentair Quad D.E. 80 Filter
• Pentair Quad D.E. 100 Filter

Compatibility depends on the specific filter model, manufacturing date, and clamp band design. Always verify the original clamp assembly before ordering.

When to Replace Your Filter Clamp Nut

A damaged or deteriorated clamp nut can prevent the filter clamp assembly from securing the tank correctly. Replacement may be necessary when:

• Threads are stripped, damaged, or excessively worn.
• The original nut is cracked or visibly corroded.
• The nut cannot be tightened according to Pentair's instructions.
• The clamp hardware has been damaged during servicing.
• The nut no longer engages correctly with the original clamp bolt.

Installation and Safety

Swimming pool filters operate under pressure. Improperly installed or damaged clamp assemblies can cause serious injury or equipment damage.

1. Turn off the pool pump and disconnect electrical power.
2. Relieve all pressure from the filter using the manufacturer's approved procedure.
3. Verify that the system pressure gauge reads zero before servicing.
4. Inspect the clamp band, spring, bolt, washers, and sealing surfaces for damage.
5. Replace the original clamp nut with the correct Pentair replacement component.
6. Reassemble and tighten the clamp hardware strictly according to Pentair's instructions.
7. Follow the manufacturer's complete startup and safety inspection procedures before returning the filter to service.

Important: Filters manufactured before March 1, 1993 may use a different clamp assembly requiring different replacement hardware. Older non-spring clamp assemblies are not interchangeable with spring-type clamp components. Verify compatibility before installation.

Related Pentair Filter Replacement Parts

Complete your pool filter repair with these genuine Pentair replacement components available from Aqua Pool Supply:

• Pentair 190003 – Complete Filter Clamp Band Replacement Kit – Genuine replacement clamp assembly for compatible Pentair FNS Plus, Quad D.E., and Clean & Clear Plus filters.
• Pentair 53108900Z – Spring & Barrel Nut Assembly – Replacement tension hardware for compatible Pentair filter clamp assemblies. Verify fitment before ordering.
• Pentair 39010200Z – Filter Tank Clamp O-Ring – Replacement tank sealing O-ring for compatible Pentair FNS Plus, Quad D.E., and Clean & Clear Plus filters.

Pentair Filter Parts Diagrams

Find additional genuine Pentair replacement parts using our filter parts diagrams:

• Pentair FNS Plus 60 D.E. Filter Replacement Parts
• Pentair Clean & Clear Plus 520 Replacement Parts

Package Includes: One (1) genuine Pentair 194997Z Machined Brass Filter Clamp Band Nut.

Compatibility: This product is the replacement clamp nut only. Clamp bands, bolts, springs, washers, and tank O-rings are sold separately. Not all Pentair filters use the same clamp hardware. Confirm the correct replacement part using your specific filter model and manufacturing date.