--- product_id: 60717041 title: "General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI" brand: "general pump" price: "S/.907" currency: PEN in_stock: true category: "General Pump" url: https://www.desertcart.pe/products/60717041-general-pump-trapped-pressure-unloader-valve-21-gpm-4050-psi store_origin: PE region: Peru --- # 4050 PSI max pressure 1/2" NPT threaded connections 21 GPM flow rate General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI **Brand:** general pump **Price:** S/.907 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your pressure washer game with unmatched power and durability! ## Quick Answers - **What is this?** General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI by general pump - **How much does it cost?** S/.907 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/60717041-general-pump-trapped-pressure-unloader-valve-21-gpm-4050-psi) ## Best For - general pump enthusiasts ## Why This Product - Trusted general pump brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from durable stainless steel to withstand high pressure and temperature up to 200°F. - • **Trusted Quality:** Highly rated with 4.8 stars and praised as the market’s best unloader valve—no compromises. - • **Precision Engineering:** New improved design reduces pressure loss for smoother, easier gun operation. - • **Power-Packed Performance:** Delivers a robust 21 gallons per minute for maximum cleaning efficiency. - • **Pump Protection Champion:** Optimized to extend your pump’s lifespan by supporting full potential without strain. ## Overview The General Pump Trapped Pressure Unloader Valve YU21405 is a high-performance accessory designed for pressure washers, featuring a 21 GPM flow rate and a maximum pressure rating of 4050 PSI. Made from stainless steel with 1/2" NPT threaded connections, it offers a new improved design that reduces pressure loss and enhances gun operation. Trusted by professionals for its reliability and pump protection, this valve supports temperatures up to 200°F and meets industry standards like ASME and ASTM. ## Description General Pump Unloader YU21405. 21 GPM. 4050 PSI Rated Pressure. 200 F Max Temp. Inlet:(2) 1/2" NPT-F Outlet: 1/2" NPT-F Bypass:(2) 1/2" NPT-F Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. ## Features - New Improved Design - Unloader Valve 4500 PSI 21 GPM 1/2" NPT - Valve ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01M1DXN7X | | Best Sellers Rank | #48,462 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #483 in Pressure Washer Accessories | | Brand Name | General Pump | | Connector Type | Threaded | | Customer Reviews | 4.8 4.8 out of 5 stars (58) | | Exterior Finish | Stainless Steel | | Inlet Connection Size | 0.5 inches | | Inlet Connection Type | National Pipe Tapered | | Item Dimensions | 7 x 8 x 3 inches | | Item Highlight | NEW improved design! - Reduced pressure loss, easier gun operation - Extremely reliable | | Manufacturer | General Pump | | Manufacturer Part Number | YU21405 | | Material Type | Stainless Steel | | Maximum Pressure | 4050 psi | | Model Number | YU21405 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 0.5 inches | | Outlet Connection Type | NPT | | Size | 2.7 liters | | Specification Met | ASME, ASTM, MSS SP 72 | | Thread Size | 1/2 inches | | Thread Type | National Pipe Tapered | | UPC | 682491064305 | | Unit Count | 1 Count | | Valve Type | Pressure Relief Valve | ## Product Details - **Brand:** General Pump - **Exterior Finish:** Stainless Steel - **Inlet Connection Size:** 0.5 inches - **Inlet Connection Type:** National Pipe Tapered - **Item dimensions L x W x H:** 7 x 8 x 3 inches - **Material:** Stainless Steel - **Maximum Operating Pressure:** 4050 psi - **Number of Ports:** 2 - **Outlet Connection Size:** 0.5 inches - **Outlet Connection Type:** NPT ## Images ![General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI - Image 1](https://m.media-amazon.com/images/I/51hH4zYIo5L.jpg) ![General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI - Image 2](https://m.media-amazon.com/images/I/313zVpkjaCL.jpg) ![General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI - Image 3](https://m.media-amazon.com/images/I/31xfONnB8CL.jpg) ![General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI - Image 4](https://m.media-amazon.com/images/I/41LKbz5dCfL.jpg) ![General Pump Trapped Pressure Unloader Valve - 21 GPM - 4050 PSI - Image 5](https://m.media-amazon.com/images/I/41FdNnaC0NL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/60717041-general-pump-trapped-pressure-unloader-valve-21-gpm-4050-psi](https://www.desertcart.pe/products/60717041-general-pump-trapped-pressure-unloader-valve-21-gpm-4050-psi) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-10-15*