610-06-BLK -6 One way poppet check valve - BLACK

Speedflow SF610-06-BLK | -6 AN One-Way Poppet Check Valve | Black | 610 Series

The Speedflow SF610-06-BLK is a precision-machined -6 AN one-way poppet check valve in black anodised finish, part of the Speedflow 610 series high-performance check valve range. Featuring a spring-loaded high-flow poppet valve design, the SF610-06-BLK positively stops fluid from returning through the line — making it an essential component for dry sump oil systems, fuel systems, turbo oil drain lines, and any performance plumbing application where backflow prevention is critical.

Product Specifications

• Part Number: SF610-06-BLK
• AN Size: -6 AN
• Type: One-way poppet check valve (spring-loaded)
• Finish: Black anodised
• Poppet Cracking Pressure: 2–3 psi (standard for -3 to -8 AN sizes)
• Series: Speedflow 610 — One-Way Poppet Check Valves
• Compatible With: Standard -6 AN fittings and hose ends

Applications

The SF610-06-BLK is an essential backflow prevention component for a wide range of high-performance plumbing applications, including:

• Dry sump oil system scavenge and pressure lines requiring positive backflow prevention
• Turbo oil drain line protection to prevent oil pooling in the turbocharger when the engine is off
• Fuel system check valve applications to maintain fuel pressure and prevent drain-back
• Remote oil filter and oil cooler line installations requiring one-way flow control
• Any performance plumbing application where fluid backflow must be positively prevented

High-Flow Poppet Valve Design

Unlike ball-type check valves, the Speedflow 610 series uses a spring-loaded poppet valve that opens fully under flow and seals positively when flow stops — providing a more reliable, higher-flow seal than ball-type alternatives. The low cracking pressure of 2–3 psi (for -3 to -8 AN sizes) ensures the valve opens with minimal restriction under normal operating conditions, while the positive poppet seal prevents any fluid from returning through the line when flow ceases.

610 Series Cracking Pressure Reference

• -3 to -8 AN sizes (including this -6 AN): 2–3 psi cracking pressure
• -10 & -12 AN sizes: 4–7 psi cracking pressure

Sold individually. Compatible with standard -6 AN fittings and hose ends. Install with flow direction arrow aligned to intended fluid flow direction.