EasyPro SCV20 2" PVC Swing Check Valve – Pond & Pump Plumbing

The EasyPro SCV20 2" PVC Swing Check Valve is a durable, corrosion-resistant check valve engineered to prevent backflow in pond pump discharge lines, waterfall plumbing, and filtration return systems. The gravity-seated swing flapper opens with minimal resistance when the pump runs — delivering low friction loss for maximum GPH — then drops closed the moment the pump stops, holding the water column in the plumbing line and preventing your biological filter from draining back to the pond. The SCV20 features 2" slip × slip connections for permanent solvent-weld installation into standard Schedule 40 or 80 PVC. The white PVC body and EPDM rubber flapper seat are corrosion-resistant, UV-stable, and completely fish-safe. Rated for 125–150 PSI working pressure — more than sufficient for any residential pond pump system. Install horizontally or in vertical up-flow orientation only. SCV20 2” Slip × Slip Swing Flapper PVC + EPDM Seal 125-150 PSI Rated Sch 40 & 80 Compatible Fish-Safe ⚠ Installation — flow direction is critical: The SCV20 has a flow direction arrow molded into the valve body. The valve MUST be installed with this arrow pointing in the direction of water flow. Installing reversed will result in a valve that blocks normal forward flow while allowing backflow — the opposite of its intended function. Inspect the arrow before cementing. Key Features & Benefits 🔄 Low Friction Loss — Full-Flow Design The swing flapper design opens fully in the direction of flow, creating a wide, unobstructed passage for water — unlike spring-loaded check valves that resist the opening pressure throughout operation. This means your pump delivers its full rated GPH to the waterfall or filter, with minimal head loss added by the valve itself. 🛡️ EPDM Rubber Flapper Seal The sealing flapper is made from EPDM rubber — a durable, weather-resistant elastomer that creates a watertight seal against the valve seat when the pump stops and backpressure pushes the flapper closed. EPDM is resistant to ozone, UV, and a wide range of pond chemical environments, providing long service life in outdoor and submerged applications. ⚙️ Permanent Slip × Slip Installation The 2" slip × slip connections allow direct solvent-weld bonding to Schedule 40 or 80 PVC pipe — creating a permanent, leak-proof joint in the pump discharge line. For applications requiring seasonal pump removal, consider a union-style check valve (Aquascape 48026). The SCV20 is ideal for permanent installations where the valve won't need to be removed. 📐 Horizontal or Up-Flow Installation The SCV20 swing check valve can be installed horizontally (the most common pond plumbing orientation) or in vertical up-flow position (pump below, filter above). It must NOT be installed in vertical down-flow orientation — the flapper relies on gravity and backpressure to seat and seal; in down-flow, the flapper would remain open against gravity and fail to prevent backflow. 💪 125–150 PSI Pressure Rating The SCV20 is pressure-rated for 125–150 PSI working pressure at 73°F — far exceeding the operating pressures of any residential pond pump (typically 5–30 PSI). This pressure rating provides a large safety margin for systems with high head waterfalls, long pipe runs, or pressurized filter systems. 🐟 Fish-Safe PVC & EPDM Materials Both the PVC body and EPDM rubber flapper are inert, non-toxic, and will not leach harmful compounds into pond water. PVC Type I (the same material used for potable water plumbing) and EPDM rubber are the industry-standard materials for fish-safe pond plumbing applications. The SCV20 is suitable for koi ponds, goldfish ponds, water gardens, and aquaculture systems. Technical Specifications Specification Value Model SCV20 Valve Type Swing check valve (gravity-seated flapper) Connection Size 2” slip × slip Body Material Rigid PVC Type I (white) Seal / Flapper Material EPDM rubber Pressure Rating 125–150 PSI at 73°F (confirm specific rating with EasyPro) Max Flow Velocity 5 ft/sec (industry limit for PVC swing check valves) Compatible Pipe Schedule 40 and Schedule 80 PVC, 2” Installation Orientations Horizontal (primary); vertical up-flow only — NOT vertical down-flow Flow Direction Arrow molded on body — MUST align with direction of water flow Installation Method Permanent solvent weld (PVC cement, primer where required) Opening Pressure <0.5 psi (gravity swing check — minimal pump back-pressure) Applications Pond pump discharge, waterfall plumbing, filtration returns, pump vaults Fish Safety Fish-safe — PVC and EPDM are inert and non-toxic EasyPro SCV Series Model Connection Size Best For SCV10 1” slip × slip Small pond pumps, fountain returns, 1” discharge lines SCV15 1.5” slip × slip Medium pumps, 1.5” discharge lines SCV20 ← This 2” slip × slip Large pumps, 2” discharge lines, waterfall systems SCV20 vs Aquascape 48026 — Which Check Valve Is Right? Feature EasyPro SCV20 Aquascape 48026 Dual Union 2.0 Connection Type Slip × Slip (permanent) Dual union (tool-free removable) Pump Removal Requires cutting pipe or union adapters Tool-free hand removal — both sides Fittings Included Slip ends only 2× 2”MPT+2”slip + 1× 1.5”FPT+2”slip + elbow System Compatibility Any 2” PVC system Designed for Aquascape skimmers & pondless vaults Price $63.99 $89.99 Best For Permanent installations; non-Aquascape systems Aquascape systems; seasonal pump removal Installation Notes Identify flow direction before installing — the valve body has a flow arrow. This arrow MUST point in the direction of water flow (from pump outlet toward filter/waterfall). Install horizontally whenever possible (the most reliable orientation for swing check valves). Vertical up-flow is acceptable. Do NOT install in vertical down-flow orientation — the flapper will hang open under gravity and fail to prevent backflow. Clean and dry the pipe ends before applying PVC cement. Apply primer if required by local code or for Schedule 80 joints. Solvent-weld per Christy's Red Hot Blue Glue or equivalent PVC cement instructions. Install on the discharge side of the pump (between pump outlet and plumbing line leading to filter or waterfall). Install in an accessible location (pump vault, skimmer interior) so the valve can be inspected and the surrounding pipe inspected for debris that might prevent flapper closure. Frequently Asked Questions Why is a swing check valve better than a spring check valve for pond pumps? Swing check valves offer significantly lower friction loss (head pressure) than spring-loaded check valves. A spring check valve must constantly overcome spring tension to stay open while the pump runs — this back-pressure reduces the pump’s effective GPH output. The SCV20’s swing flapper opens fully with the flow and stays open under water pressure alone, adding minimal resistance. This “full-flow” design preserves the pump’s rated GPH and reduces motor stress over time. The only trade-off: swing check valves rely on gravity and backpressure to close, while spring check valves close faster and more positively when flow stops. What are the connection specs for the EasyPro SCV20? The SCV20 features 2-inch slip × slip connections — both the inlet and outlet are 2" socket (slip) ends for permanent solvent-weld bonding directly to standard 2" PVC pipe. This connection type is compatible with Schedule 40 and Schedule 80 PVC. No threading, no union connections — the SCV20 is designed for permanent installation using PVC cement. Important: because this is a permanent installation, plan your installation carefully — if you need to remove the pump seasonally, install a union fitting near the check valve, or consider a union-style check valve instead. Does this 2-inch PVC valve prevent waterfall drainage when the pump is off? Yes. When the pump stops, back-pressure from the water column in the plumbing line above pushes the EPDM flapper closed against its seat, sealing the valve. This holds the water in the discharge line and prevents it from draining back to the pond through the pump. Your biological filter stays full of water, the beneficial bacteria colony remains submerged and healthy, and when the pump restarts the waterfall or fountain begins flowing immediately — no wait for the line to refill. Is the EasyPro SCV20 check valve suitable for horizontal or vertical installation? The SCV20 is designed primarily for horizontal installation, with vertical up-flow (pump below, valve above, water flowing upward through the valve) also acceptable. The swing flapper uses gravity plus backpressure to seat and seal — this works in horizontal and up-flow orientations. Do not install in vertical down-flow orientation (pump above, water flowing downward through the valve) — in this configuration the flapper would hang open under its own weight, failing to prevent backflow when the pump stops. What materials is the SCV20 constructed from? The valve body is rigid white PVC Type I — the same material used for potable water plumbing, highly resistant to corrosion, UV, and pond chemicals. The sealing flapper is EPDM rubber — a durable elastomer that creates a watertight seal against the valve seat and is resistant to ozone, UV, temperature extremes, and most pond chemical environments. Both materials are completely fish-safe and will not leach harmful compounds into pond water. Can this 2" swing check valve be serviced? The SCV20 is a sealed unit and is not designed for field disassembly. As a solvent-welded check valve, replacement requires cutting the valve out of the plumbing line and cementing in a new one. To maximize service life: install in an accessible location so you can inspect the valve and surrounding pipe; use a pre-filter or skimmer basket to prevent large debris from reaching the valve; and periodically confirm the flapper is seating properly by listening for water hammer (a single knock when the pump stops indicates proper closure). Why Buy from Pond Pro Direct? Authentic EasyPro products with full warranty support Expert pond plumbing guidance — call or text (765) 508-4352, Mon–Fri 9am–5pm EST Free shipping on all orders Price match guarantee on identical products 30-day return period on eligible items