Commercial Sink Faucets • Pre-Rinse Faucets • Commercial Kitchen Faucets • Wall Mount Sink Faucets • Deck Mount Sink Faucets • OEM & Wholesale Supply
GR138B High Quality Brass Push Valve For Hand Basin Tap
Push Button Valve
A brass Push Valve with a chrome button.
G½” Connections. Please note: The flow of water MUST follow the direction indicated on the side of the valve.
This valve is mounted on to the rear of the valve.
Lead-Free Solid Brass And Stainless Steel In Comercial Kitchen!
We understand that commercial sinks are put through the wringer. They’re constantly exposed to food scraps, grease, and all sorts of debris. That’s why our waste restaurant sink faucets are built to last. Made from high-quality stainless steel and heavy – duty brass, they can withstand the toughest conditions without rusting or corroding. No more worrying about parts breaking down and causing costly downtime.
We Provide Trusted Products For You!
The GR137/GR137A self-closing valves are perfect for hands-free operation, automatically shutting off after use to save water and prevent drips, while the GR138/GR138A manual push valves give you precise control with every press. Made from premium brass with G½” standard connections, they’re built to last through thousands of cycles, even in demanding environments. Need a sleek chrome finish? The GR138B adds a polished touch without sacrificing performance.
Installations
If your faucet is not working properly, follow these steps to install a commercial sink faucet:
1. Turn off the water
2. Disconnect the lines
3. Remove the nuts
4. Clean the area
5. Prepare for the new faucet
6. Insert the faucet
7. Lock it in place
8. Reattach the supply lines with the adjustable wrench
9. Test your connections
Why 1000+ Global Project Partners Trust Sunmixer Faucets
7-Day Fast-Track Production
We maintain a strategic inventory of core components (7/8″-20 threads, universal 8-inch centers), enabling a 7-day lead time for standard wholesale orders. We eliminate the typical 30-45 day wait, helping you reduce inventory costs and respond faster to project deadlines
Seamless "Drop-in" Compatibility
Fits all standard 4″ or 8″ center-to-center commercial sinks. You can swap out your old units without changing the pipes or the sink itself. It’s a straight-forward replacement that saves significant labor time during restaurant or hotel renovations.
Standardized Hardware for Multi-Location Chains
Whether you are outfitting a QSR (Quick Service Restaurant), or a high-traffic restaurant or a hotel chain, or a school kitchen, our team provides tailored plumbing configurations. We don’t just sell faucets, we ensure compatibility with your specific sink types and utility requirements.
Send Your Inquiry Today
Please specify your mounting type (wall or deck), required spout reach, and daily usage scenario (e.g. restaurant, hotel, or chain store). For faster response, please leave your Phone/WhatsApp.
What Commercial Faucet Buyers Say About Sunmixer
Mr. Tahi
From Saudi Arabia
★★★★★ 评分为 5（共 5）
I have been doing business with Devin for more than 10 years. Every year, I purchase a large number of pre-rinse faucets and wall-mounted faucets.
Now I am handling more projects for my customers, including restaurants, cafes, and other foodservice businesses. I appreciate that Devin helps me with product matching, packaging, and logistics, which makes my purchasing process easier and helps me reduce costs.
Mrs. Najjar
From Bahrain
★★★★★ 评分为 5（共 5）
This is my first time working with your factory. My projects mainly involve commercial kitchen supplies for the local market.
My purchase order was quite complex. It included faucet valves, add-on faucets, nozzles, handles, and other related parts. Each item needed to be packed separately and labeled with a customized logo.
Devin was very patient and helped me organize the order clearly. He solved the problem for me and made the whole process much easier.
Mr. Erick
From the USA
★★★★★ 评分为 5（共 5）
Your faucets are reliable, and I would recommend them to other foodservice equipment buyers. The quality, price, and finish are good for our market.
Last year, I ordered 500 sets of pedal valves for my customers. Some packages were damaged during transportation because of bad weather.
Fortunately, Devin helped me handle the issue and arranged new boxes. Because of that, I was still able to deliver the products to my customers on time.
You’ve got problems.
We’ve got solutions.
Hi, my friends! I’m Devin, a supply chain expert working in our company for more than 10 years. I’ve been supplied commercial faucets and sinks for restaurant, hotel, coffee shop, school and other commercial kitchen projects. I possess extensive knowledge and practical experience in the fiield where how to choose idea commercial faucets and sinks for different kitchens. If you get acquainted with me on web, I’m very glad share my experience and insights in this field. I hope we can connect and learn from each other. So feel free to click the botton below or share your specific requirements—we’d love to send you a quote within 24 hours!
A push button valve is a convenient, hands-free faucet valve that dispenses water when pressed and automatically stops the flow when released. It’s commonly used in hand basins, kitchens, and commercial settings for hygienic and efficient water control. Our GR137 and GR137A models feature a self-closing mechanism, while the GR138 series stays open until manually pressed again.
The GR138 is a manual push valve—you press to start the flow and press again to stop it. The GR137 is a self-closing valve, meaning it automatically shuts off after a few seconds. Both use G½” connections and are mounted at the rear, but the GR137 is ideal for commercial kitchens, labs, or public restrooms where hands-free operation is preferred.
Yes—but with some limitations:
- GR138/GR138A (manual valves) are typically designed for cold water only (safe for handwashing).
- GR137/GR137A (self-closing valves) can handle both hot and cold water (up to 60°C), making them perfect for kitchens, laundry rooms, and commercial applications. Always check the product specs before installation.
Our push button valves are built for heavy-duty use:
- GR138/GR138A (manual): Rated for 5,000+ cycles—ideal for homes and light commercial use.
- GR137/GR137A (self-closing): Rated for 10,000+ cycles—perfect for high-traffic areas like restaurants and hospitals.
With proper maintenance, they can last 5–10 years or more, even in demanding environments.
No problem—we offer flexible solutions:
✅ Adapter rings for alternative pipe sizes (common in older faucets).
✅ Custom threading services (minimum order may apply).
✅ Rear-mounted design makes installation easier, even with slightly offset pipes.
If you’re unsure, our team can help you verify compatibility before ordering.