--- product_id: 12516758 title: "NATIONAL DIVERSIFIED SALES INC 1700C20 2\" SPRING CK VALVE UNION CLR" brand: "nds" price: "705.44 DT" currency: TND in_stock: true reviews_count: 8 url: https://www.desertcart.tn/products/12516758-national-diversified-sales-inc-1700c20-2-spring-ck-valve-union store_origin: TN region: Tunisia --- # Easy repair with spring check design 2-inch inlet/outlet size Durable PVC material NATIONAL DIVERSIFIED SALES INC 1700C20 2" SPRING CK VALVE UNION CLR **Brand:** nds **Price:** 705.44 DT **Availability:** βœ… In Stock ## Summary > πŸ’§ Keep your flow flawless with the valve that works as hard as you do! ## Quick Answers - **What is this?** NATIONAL DIVERSIFIED SALES INC 1700C20 2" SPRING CK VALVE UNION CLR by nds - **How much does it cost?** 705.44 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/12516758-national-diversified-sales-inc-1700c20-2-spring-ck-valve-union) ## Best For - nds enthusiasts ## Why This Product - Trusted nds brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Proven longevity with up to 9 years of dependable service in harsh chlorinated environments. - β€’ **Precision 2-Inch Fit:** Seamlessly integrates with standard irrigation systems for hassle-free installation. - β€’ **Clear PVC Construction:** Visual inspection made effortlessβ€”spot wear or debris without disassembly. - β€’ **Effortless Maintenance:** Quick O-ring replacement and simple center-piece access keep downtime minimal. - β€’ **Spring-Loaded Reliability:** Ensures smooth, automatic flow control to prevent backflow and maintain system integrity. ## Overview The NATIONAL DIVERSIFIED SALES INC 1700C20 2" Spring Check Valve Union CLR is a durable, clear PVC valve designed for 2-inch irrigation and pool systems. Featuring a spring-loaded check mechanism, it prevents backflow and allows easy maintenance through simple O-ring replacement. Trusted for its longevity, this valve withstands harsh chlorinated environments, making it a reliable choice for professionals seeking low-maintenance, high-performance water control. ## Description Tru Union Spring Check Valve Allows for easy repair and cleaning2"s x s, clear Review: No - Good Review: Well Made, Previous one Lasted 9 years - I first installed one of these 9 years ago. It finally started leaking and emptying the spa. I'm glad they still had this exact same one. Made it real easy to replace by just changing the o-rings and sliding the blue center piece in and retightening using the existing unions. Hope I get another 9 years out of this new one. Things don't usually last that long in chlorine pool. Seems it was very well made. I looked inside to try to figure out what has failed and nothing was obvious, maybe the spring finally wore out or the seals degraded over time. I'm happy with it and will buy again if needed in the future. ## Features - Brand: National Diversified Sales Inc - Material: Metal - Item Weight: 1 lb - Number Of Items: 1 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003114TIE | | Best Sellers Rank | #176,662 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #390 in Check Valves | | Brand | NDS | | Brand Name | NDS | | Connector Type | connector_type | | Customer Reviews | 3.9 out of 5 stars 40 Reviews | | Exterior Finish | Clear | | Global Trade Identification Number | 00670686975208 | | Included Components | 1 | | Inlet Connection Size | 2 inches | | Inlet Connection Type | Chlorinated Polyvinyl Chloride | | Item Dimensions | 6 x 4 x 6 inches | | Item Weight | 16 ounces | | Item dimensions L x W x H | 6 x 4 x 6 inches | | Manufacturer | SCP Distributors LLC (Pool Corp) | | Manufacturer Part Number | 1700C20 | | Manufacturer Warranty Description | 1 Year | | Material | Polyvinyl Chloride (PVC) | | Material Type | Polyvinyl Chloride (PVC) | | Model Number | 1700C20 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 2 inches | | Outlet Connection Type | NPT | | Size | 2 Inch | | Specification Met | ASME, ANSI | | Thread Size | thread.size | | Thread Type | PVC | | UPC | 670686975208 | | Unit Count | 1 Count | | Valve Type | Check Valve | ## Product Details - **Material:** Metal - **Brand:** NATIONAL DIVERSIFIED SALES INC - **Item dimensions L x W x H:** 6 x 4 x 6 inches - **Exterior Finish:** Metal - **Inlet Connection Size:** 2 Inches - **Inlet Connection Type:** Chlorinated Polyvinyl Chloride - **Outlet Connection Type:** NPT - **Number of Ports:** 2 - **Outlet Connection Size:** 2 Inches - **Specification Met:** ASME, ANSI ## Images ![NATIONAL DIVERSIFIED SALES INC 1700C20 2" SPRING CK VALVE UNION CLR - Image 1](https://m.media-amazon.com/images/I/81mtA9u2vBL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ No *by L***Z on July 25, 2026* Good ### ⭐⭐⭐⭐⭐ Well Made, Previous one Lasted 9 years *by M***K on August 11, 2025* I first installed one of these 9 years ago. It finally started leaking and emptying the spa. I'm glad they still had this exact same one. Made it real easy to replace by just changing the o-rings and sliding the blue center piece in and retightening using the existing unions. Hope I get another 9 years out of this new one. Things don't usually last that long in chlorine pool. Seems it was very well made. I looked inside to try to figure out what has failed and nothing was obvious, maybe the spring finally wore out or the seals degraded over time. I'm happy with it and will buy again if needed in the future. ### ⭐⭐⭐⭐⭐ Five Stars *by B***E on August 8, 2016* Quick. Fast and repaired my pool. Direct replacement, so no extra plumbing was necessary --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/12516758-national-diversified-sales-inc-1700c20-2-spring-ck-valve-union](https://www.desertcart.tn/products/12516758-national-diversified-sales-inc-1700c20-2-spring-ck-valve-union) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-18*