Brass Check Valve 1/2" FPT I/O, 1200PSI
Brass Check Valve 1/2" FPT I/O, 1200PSI
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- Item# 3449
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Brass Check Valve 1/2" FPT I/O, 1200PSI is a professional-grade valves rated to 1200 PSI, brass construction. In stock and ships same day from Sun Brite Supply in Gaithersburg, Maryland.
Product Overview
1/2 inch brass check valve for pressure washing systems. Rated to 1200 PSI.
Valves control flow direction, pressure, and safety in your pressure washing system. The check valve is a wear item that needs replacement when it starts leaking, sticking, or failing to hold pressure. A bad valve affects the whole system. Replace it as soon as you notice a problem.
Check valves allow water to flow in one direction only. They prevent backflow that can damage pumps and contaminate water supplies. If your check valve is leaking backward, the pump loses prime and pressure drops.
Key Features and Specifications
- Port Size: 1/2 inch
- Max PSI: 1200
- Material: Brass. Handles high temperatures and chemical exposure. Will not rust. Standard choice for pressure wash plumbing.
- Type: Check Valve
- Application: Pressure washer plumbing, safety, and flow control
| Valve Type | Check Valve |
| Port Size | 1/2 inch |
| Max PSI | 1200 PSI |
| Material | Brass |
Compatibility
Valves connect to your system plumbing using standard pipe threads (NPT) in the size listed above. Match the port size and thread type to your existing plumbing. Common valve locations:
- Between the water supply and the pump inlet
- On the pump discharge line before the hose
- At buffer tank outlets and inlets
- On chemical injection lines
- In hot water coil plumbing for safety relief
Applications and Use Cases
- Backflow prevention at water supply connections
- Pressure relief to protect the system from overpressure conditions
- Flow isolation for maintenance, winterization, and system shutdown
- Buffer tank level control with float valves
- Chemical line shutoff to stop chemical flow when not in use
Every valve in your system is a potential failure point. Low quality valves corrode, stick, and leak under the pressures and chemicals used in pressure washing. Spending a few extra dollars on a quality valve prevents expensive failures and water damage on the job.
Installation and Maintenance Tips
Install valves with Teflon tape on all threaded connections. Make sure the flow direction arrow (if present) points in the correct direction. A check valve installed backward blocks all flow.
Test the valve after installation. Check valves should hold water in one direction and flow freely in the other. Relief valves should open at their rated pressure and reseat when pressure drops.
Inspect valves regularly for leaks, corrosion, and sticking. Ball valves should turn freely with a quarter turn. If a ball valve is hard to turn, the seat is worn or corroded. Replace it before it seizes.
Frequently Asked Questions
How do I know if my check valve is bad?
Common signs of a bad check valve include leaking, failure to hold pressure, sticking in the open or closed position, and visible corrosion or damage. If the valve is leaking or not functioning correctly, replace it. Trying to fix a bad valve wastes time.
What material should I choose for my valve?
Brass is the standard for most pressure washing applications. It handles chemicals, pressure, and temperature well. Stainless steel is better for corrosive chemicals and extreme conditions. Poly works for cold water chemical injection where weight and cost matter.
Do I need Teflon tape on valve threads?
Yes. All NPT threaded connections need Teflon tape or pipe dope to seal properly. Wrap 3 to 5 times clockwise when looking at the end of the male thread. For pressures above 3000 PSI, use pipe dope for a better seal.
Where can I buy pressure washer valves near Gaithersburg, Maryland?
Sun Brite Supply is located at 16620 Oakmont Ave, Gaithersburg, MD 20877. We carry a full selection of pressure washer valves for walk-in customers and ship nationwide. Local contractors in Maryland, Virginia, DC, and the Mid-Atlantic area can stop by for same-day pickup. If you are outside the area, order online at sunbritesupplymd.com and we will ship it out fast. Call us at 301-519-9274 if you need help finding the right part.
Before You Order: What to Check
Getting the right part the first time saves you a return trip and more downtime. Before you add this to your cart, check these things:
- Model number: Find the model and serial number on your equipment data plate. Write it down before you order.
- Port sizes and thread types: Measure your connections. A 3/8 inch fitting will not thread into a 1/4 inch port no matter how hard you try.
- Pressure and flow ratings: Make sure the replacement part is rated for your system's PSI and GPM. Under-rated parts fail fast.
- Old part comparison: If possible, remove the old part and compare it side by side with the product photos and specs listed here.
- Still not sure? Call us before you order. We would rather spend 5 minutes on the phone confirming fitment than process a return because the wrong part showed up.
Why Buy Your Valves from Sun Brite Supply?
Sun Brite Supply ships from our warehouse in Gaithersburg, Maryland. We stock the same brands the pros run. General Pump, Cat Pumps, AR, Honda, Hannay, Suttner, and more. No knockoffs. No mystery brands. Every part we sell has been vetted by people who work on this equipment every day.
Need help picking the right part? Call us at 301-519-9274. You will talk to someone who actually knows pressure washing equipment, not a script reader at a call center. We can verify fitment, suggest alternatives, and match you with the right part the first time. Our team has over 50 years of combined experience in the pressure washing industry. We deal with these machines daily and know which parts work and which ones cause problems.
Local to Maryland or the DMV area? Stop by our Gaithersburg location at 16620 Oakmont Ave for walk-in counter sales. We can pull parts, check fitment in person, and get you set up on the spot. Contractors across the Mid-Atlantic rely on Sun Brite Supply for same-day parts when they need them fast.
We carry over 2,700 pressure washing parts and accessories in stock. Pumps, hoses, fittings, nozzles, chemicals, engine parts, burner parts, and electrical controls. Browse our full catalog at sunbritesupplymd.com and order everything you need from one supplier. One order, one shipment, less downtime waiting on parts.
Most orders ship the same business day when placed before 2 PM Eastern. We ship nationwide from Maryland, so whether you are in Virginia, Pennsylvania, DC, or across the country, you get your parts fast. We keep popular parts in stock so you are not waiting on backorders.
Shop online at sunbritesupplymd.com or call us directly at 301-519-9274. Over 2,700 parts ready to ship. We are here to help you keep your equipment running and your business moving forward.
Check our full valve selection. Check valves, ball valves, relief valves, float valves, bypass valves, and solenoid valves in brass, stainless, and poly.