The Pentek 153128 is a genuine replacement sump (bottom housing bowl) designed for Pentek Standard 10" Slim Line filter housing systems. It engineered to accept standard 2.5" x 10" Slim Line filter cartridges. This sump is specifically compatible with Pentek Slim Line 10" housing caps and is not interchangeable with Big Blue or Full-Flow housings due to its slim-profile threading and dimensions.

The Pentek 153128 sump is rated for a maximum working pressure of 125 psi (8.6 bar) and a temperature range of 40°F to 100°F (4.4°C to 37.8°C). It features Pentek's proprietary threading for a leak-free seal with compatible Slim Line caps and includes the correct O-ring groove dimensions. Since this is a housing component rather than a filter cartridge, it does not carry a micron rating — the micron rating is determined by the cartridge you install inside it.

Yes, the Pentek 153128 sump is constructed from NSF-listed materials and the complete Pentek Slim Line housing system is tested and certified to NSF/ANSI Standard 42 for material safety and structural integrity. This certification ensures the polypropylene sump will not leach contaminants into your filtered water and meets industry standards for potable water applications.

Unlike filter cartridges that require scheduled replacement, the Pentek 153128 sump is a durable housing component designed for long-term use — typically 5 years or more under normal operating conditions. However, you should inspect the sump at every cartridge change (every 3–6 months) for signs of stress cracks, cloudiness, or O-ring seat wear. Replace immediately if you notice any leaks, visible damage, or after exposure to pressures exceeding 125 psi.

To install the Pentek 153128: first shut off the water supply and depressurize the system by opening a downstream faucet. Unscrew the old sump from the housing cap using a Pentek SW-1A housing wrench. Lubricate the O-ring with food-grade silicone grease, insert your 2.5" x 10" Slim Line cartridge, then hand-thread the new 153128 sump into the cap. Tighten an additional quarter-turn with the wrench. Slowly restore water pressure, check for leaks, and flush the system for 5 minutes before use.

The PENTEK-153128 is not guaranteed to fit all brands' housing caps. The sump is compatible with Pentek Standard (ST) caps. The 153128 fits with Culligan HF-160 and HF-360 caps as well as older USFilter and Ametek standard caps. Check compatibility before purchasing.

No, o-rings and o-ring lubricant need to be purchased separately. The PENTEK-153128 only includes the clear housing sump. Note: Ensure when installing the housing that you do not overtighten, as this can damage o-rings and cause leaking.