---
product_id: 27418260
title: "Pentair Pentek 166219 Big Clear Filter Housing, 1\" NPT #10 Whole House Heavy Duty Water Filter Housing with Pressure Relief Button, 10-Inch, Blue/Clear"
brand: "pentek"
price: "€ 331.66"
currency: EUR
in_stock: true
reviews_count: 8
category: "Pentek"
url: https://www.desertcart.hr/products/27418260-pentair-pentek-166219-big-clear-filter-housing-1-npt-10
store_origin: HR
region: Croatia
---

# 1" NPT ports for high flow Clear Lexan sump for instant visual check Pressure relief button for easy cartridge swaps Pentair Pentek 166219 Big Clear Filter Housing, 1" NPT #10 Whole House Heavy Duty Water Filter Housing with Pressure Relief Button, 10-Inch, Blue/Clear

**Brand:** pentek
**Price:** € 331.66
**Availability:** ✅ In Stock

## Summary

> 🔵 Clear, tough, and built to flow — upgrade your water game with Pentair Pentek!

## Quick Answers

- **What is this?** Pentair Pentek 166219 Big Clear Filter Housing, 1" NPT #10 Whole House Heavy Duty Water Filter Housing with Pressure Relief Button, 10-Inch, Blue/Clear by pentek
- **How much does it cost?** € 331.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/27418260-pentair-pentek-166219-big-clear-filter-housing-1-npt-10)

## Best For

- pentek enthusiasts

## Why This Product

- Trusted pentek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **See Performance Live:** Transparent Lexan sump lets you monitor cartridge life and sediment buildup without disassembly—never miss a filter change again.
- • **Effortless Maintenance:** Integrated pressure relief button reduces system pressure for quick, hassle-free cartridge replacements.
- • **Built for Heavy-Duty Flow:** 1" NPT inlet/outlet ports and 1-1/2" internal port maximize water volume for demanding whole-house filtration.
- • **Durable Industrial-Grade Build:** Reinforced polypropylene cap and Lexan sump ensure long-lasting strength and reliability under heavy use.
- • **Universal Cartridge Compatibility:** Fits any standard 10" x 4.5" Big Blue or heavy-duty sediment/carbon filter cartridge—flexibility that adapts to your filtration needs.

## Overview

The Pentair Pentek 166219 Big Clear Filter Housing is a robust, 10-inch whole-house water filter housing designed for high-capacity, heavy-duty filtration. Featuring 1" NPT ports and a 1-1/2" internal port for superior flow, a clear Lexan sump for on-site cartridge monitoring, and a pressure relief button for easy maintenance, it supports any standard 10" x 4.5" Big Blue or sediment/carbon filter cartridge. Constructed from reinforced polypropylene and Lexan, it delivers industrial-grade durability and convenience for professional-grade water filtration systems.

## Description

Pentair Pentek Big Clear Filter Housings offer the versatility to meet all of your large-capacity filtration needs, including high-flow and heavy-sediment applications. The extra large housing allows for greater cartridge capacity, reducing the number of vessels required for high flow-rate applications. Sumps are available in both 10" and 20" lengths. The cap is available with 1" NPT inlet and outlet ports. The 1-1/2" internal port allows a greater volume of liquid to pass through the cap more rapidly. Big Clear Filter Housings offer on-site examination of flow, performance, and cartridge life and are ideal for a variety of applications. The 1" polypropylene caps are available with a pressure-relief button on the inlet side to relieve pressure inside the housing . Caps are constructed of reinforced polypropylene. The 10" sumps are made of Lexan and the 20" sumps are SAN (Styrene acrylonitrile).

Review: Quality of the original PenPure Big Blue! - It's been a while, but I needed a Big Blue housing for a project. I didn't even know if they were still available, but a quick scan and up pops this Pentek - It's gotta be Pen Pure - right? Wow they're still selling them! Price is right, ordered one right up, couple days later, another desertcart box.... When I saw "Pentair" on the label, I took a deep breath. Not made any better by the "Made in China" that followed. Oh-oh - this could be bad! Hmm.. looks pretty decent, No!, it's good! (Pentair is a huge industrial corporation, highly respected) I was in the commercial water treatment/RO business back in years ago, and the Pen Pure brand was well respected, as was their version of the standard Big Blue 4.5" (in 10 or 20") housing, often used as a prefilter for smaller commercial RO systems with a depth filter and a CBC to prep for a TFC membrane. That's what this is being used for, and I'm very happy to say, the quality is as good as they were back 20+ yrs ago. You can't say that about too many things that have aged that long and had their manufacture moved to China. I wish it was made in the US, but if it had, I doubt it would be sold at this price point. (We used to get a case of 4 for $99, and once in a while the wholesaler would throw in elements if you bought a few boxes) Small things tell you about quality, and how much a manufacturer cares about it. As always, I grabbed my silicone grease to lube the o-ring, and I also grease the threads lightly too to ease removal and prevent "plastic stick" which can be annoying on this size housing. Anyway, I opened it up and there was the o-ring (not in the groove, in the bowl - a good thing, so it doesn't take a set) and it was already lightly lubed up. A manufacturer that cares enough to do that cares about their product. Always, and still a Penn-Pure/Pentek/Pentair Big Blue customer. 5 stars across the board! Even "Flavor" - I assume they mean the water? That would depend more on the element than the housing, and raw water. One negative - No L bracket and screws with the housing. They used to come gratis, heck I had dozens of them floating around I didn't need, now think I can find one? Still giving five stars on "Ease of install" even though I should take one back, I figure these are available in 1" and 3/4" which saved me some grief. If you're listening, desertcart and Pentair, at least mark "bracket not included" and link one. They're not the same as a standard 10" x 2.5 one. The bolt pattern on a Big Blue is 3" x 3" with 4" to center to the bend - hope that helps someone out. (love that they kept the Imperial pattern) You can drill and tap 1/4npt for a gauge, and the original brackets are notched both sides to clear the bleeder and gauge (and allow 'flipping' if necessary) Bottom Line: These are a high quality housing at a fair price, and I highly recommend them.
Review: Good option for RV multi stage filter system - Great quality. Solid build and worked well with the components I used to build my filtration system.

## Features

- HEAVY DUTY FILTER HOUSING ideal for large-capacity, high flow applications
- CLEAR SUMP HOUSING offers on-site examination of flow, cartridge life and performance
- PRESSURE RELIEF BUTTON for easy cartridge replacement
- COMPATIBLE WITH ANY 10" x 4.5" Big Blue or other heavy duty sediment or carbon filter cartridge
- CONSTRUCTED of reinforced polypropylene (cap) and Lexan (sump)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004H36N66 |
| Best Sellers Rank | #113,191 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #791 in Replacement Under-Sink Water Filters |
| Brand | Pentek |
| Brand Name | Pentek |
| Capacity | 180 Cubic Inches |
| Container Type | Cartridge |
| Customer Reviews | 4.4 out of 5 stars 906 Reviews |
| Global Trade Identification Number | 00799932590597 |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 7"L x 7"W x 12"H |
| Item Height | 13.5 inches |
| Item Type Name | Whole House Heavy Duty Water Filter Housing with Pressure Relief Button, 10-Inch, Blue/Clear |
| Item Weight | 5.41 Pounds |
| Manufacturer | Pentek |
| Material | Polypropylene |
| Material Type | Polypropylene |
| Model Name | Big Clear Filter Housing, 1" NPT #10 |
| Model Number | 166219 |
| Other Special Features of the Product | Heavy Duty Clear Lexan Housing |
| Package Information | Cartridge |
| Power Source | Manual |
| Product Dimensions | 7"L x 7"W x 12"H |
| Purification Method | Sedimentation |
| Special Feature | Heavy Duty Clear Lexan Housing |
| UPC | 799932590597 807032970802 809390001488 806294982516 808112758587 809188527480 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Brand:** Pentek
- **Special Feature:** Heavy Duty Clear Lexan Housing
- **Product Dimensions:** 7"L x 7"W x 12"H
- **Material:** Polypropylene
- **Capacity:** 180 Cubic Inches
- **Package Information:** Cartridge
- **Installation Type:** Under Sink
- **Purification Method:** Sedimentation
- **Power Source:** Manual
- **Item Weight:** 5.4 Pounds

## Images

![Pentair Pentek 166219 Big Clear Filter Housing, 1" NPT #10 Whole House Heavy Duty Water Filter Housing with Pressure Relief Button, 10-Inch, Blue/Clear - Image 1](https://m.media-amazon.com/images/I/71UnGiE135L.jpg)

## Available Options

This product comes in different **Pattern, Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality of the original PenPure Big Blue!
*by S***4 on July 9, 2021*

It's been a while, but I needed a Big Blue housing for a project. I didn't even know if they were still available, but a quick scan and up pops this Pentek - It's gotta be Pen Pure - right? Wow they're still selling them! Price is right, ordered one right up, couple days later, another Amazon box.... When I saw "Pentair" on the label, I took a deep breath. Not made any better by the "Made in China" that followed. Oh-oh - this could be bad! Hmm.. looks pretty decent, No!, it's good! (Pentair is a huge industrial corporation, highly respected) I was in the commercial water treatment/RO business back in years ago, and the Pen Pure brand was well respected, as was their version of the standard Big Blue 4.5" (in 10 or 20") housing, often used as a prefilter for smaller commercial RO systems with a depth filter and a CBC to prep for a TFC membrane. That's what this is being used for, and I'm very happy to say, the quality is as good as they were back 20+ yrs ago. You can't say that about too many things that have aged that long and had their manufacture moved to China. I wish it was made in the US, but if it had, I doubt it would be sold at this price point. (We used to get a case of 4 for $99, and once in a while the wholesaler would throw in elements if you bought a few boxes) Small things tell you about quality, and how much a manufacturer cares about it. As always, I grabbed my silicone grease to lube the o-ring, and I also grease the threads lightly too to ease removal and prevent "plastic stick" which can be annoying on this size housing. Anyway, I opened it up and there was the o-ring (not in the groove, in the bowl - a good thing, so it doesn't take a set) and it was already lightly lubed up. A manufacturer that cares enough to do that cares about their product. Always, and still a Penn-Pure/Pentek/Pentair Big Blue customer. 5 stars across the board! Even "Flavor" - I assume they mean the water? That would depend more on the element than the housing, and raw water. One negative - No L bracket and screws with the housing. They used to come gratis, heck I had dozens of them floating around I didn't need, now think I can find one? Still giving five stars on "Ease of install" even though I should take one back, I figure these are available in 1" and 3/4" which saved me some grief. If you're listening, Amazon and Pentair, at least mark "bracket not included" and link one. They're not the same as a standard 10" x 2.5 one. The bolt pattern on a Big Blue is 3" x 3" with 4" to center to the bend - hope that helps someone out. (love that they kept the Imperial pattern) You can drill and tap 1/4npt for a gauge, and the original brackets are notched both sides to clear the bleeder and gauge (and allow 'flipping' if necessary) Bottom Line: These are a high quality housing at a fair price, and I highly recommend them.

### ⭐⭐⭐⭐⭐ Good option for RV multi stage filter system
*by C***1 on November 5, 2025*

Great quality. Solid build and worked well with the components I used to build my filtration system.

### ⭐⭐⭐⭐⭐ Top Notch purchase!
*by T***S on November 26, 2025*

Great product, superb service, will do more business!

## Frequently Bought Together

- Pentair Pentek 166219 Big Clear Filter Housing, 1" NPT #10 Whole House Heavy Duty Water Filter Housing with Pressure Relief Button, 10-Inch, Blue/Clear
- Pentair Pentek DGD-5005 Big Blue Water Filter, 10-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 10" x 4.5", 5 Micron, Pack of 1

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-24*