Downstream Chemical Injector Check Valve Adapter

Stop fighting weak chemical draw and failing check valves.

This precision-machined stainless steel adapter is built specifically to connect standard General Pump downstream chemical injectors to high-performance check valves.

It eliminates the weak link in your injector setup, giving you stronger suction, hotter bleach/chemical mixes, and rock-solid reliability on the job — no more diluted mixes or backflow headaches that kill your day.

Why You Need This Adapter:

• Perfect Fit: 1/4" NPT tapered side screws directly into quality downstream check valves. The small threaded end mates cleanly with common General Pump injectors.
• Leak-Free Install: Tapered NPT seals water-tight out of the box — just add a touch of thread tape if you want extra security.
• Built Tough: Stainless steel construction laughs at bleach and harsh chemicals where cheap stock parts fail.
• Must-Have for General Pump Users: Designed exclusively for the popular General Pump brand downstream injectors (2.1, 2.3 Hi-Draw, etc.). Pairs great with high-flow rigs.

Installation is stupid simple: Screw the 1/4 NPT side into your check valve, thread the other end into your General Pump injector, hook up your suction line, and get back to blasting.

Whether you're running a compact skid, full trailer build, or upgrading an existing setup, this adapter helps you pull stronger, cleaner, and more consistent chemical mixes every time. Over-engineered so you don't have to think about it again.

Pro Tip: Pair it with a quality high-draw check valve assembly or full downstream injector kit for maximum performance on 5–10+ GPM machines.

Compatible With:

• General Pump downstream injectors
• Standard downstream check valves
• 1/4" chemical suction lines & barbs
• Most soft wash and pressure washing rigs

In the Box: 1x Stainless Steel Check Valve Adapter

Add this to your cart and level up your downstream game. Questions on fitment for your specific pump or build? Hit us up.