Viega 50303 30-port 1/2 Inches Pex Crimp Manabloc Manifold 12 Hot 18 Cold

Product Description

The Viega 50303 is a 30-port ManaBloc plumbing manifold designed for residential and light commercial PEX distribution systems. It provides a centralized hub for hot and cold water supply lines, giving plumbers and contractors full individual control over every fixture in a building from a single location. The manifold includes 12 hot ports and 18 cold ports, all sized for 1/2 inches PEX crimp connections. Each port is equipped with a built-in 1/4-turn shut-off valve, so any fixture can be isolated without interrupting water flow to the rest of the system. This makes routine maintenance, repairs, and future upgrades significantly faster and less disruptive. The Viega 50303 ManaBloc is intended for use with ViegaPEX Ultra tubing in both potable and non-barrier configurations. It is also fully compatible with all types of PEX tubing including Type A, Type B, and Type C from any manufacturer, giving installers flexibility on the job. The hot and cold water inlet connections are 1 inches, and ManaBloc adapters are required for those connections. All PEX adapters for the branch ports are included, along with a valve key. The manifold is lead-free and approved for potable water use, meeting NSF/ANSI 61 and 372 standards for drinking water system components. It also meets ASTM F876 and F877 standards for PEX tubing connections, as well as CSA B137.5, and carries UPC-IAPMO certification. The Viega 50303 is proudly made in the USA, making it a trusted choice for plumbing professionals who need a reliable, code-compliant manifold for home-run PEX plumbing installations.

• 30 total ports with 12 hot and 18 cold, each sized for 1/2 inches PEX crimp connections
• Built-in 1/4-turn shut-off valve on every port for individual fixture isolation
• Lead-free, NSF/ANSI 61 and 372 certified, and UPC-IAPMO listed for potable water use

Product Highlights

The Viega 50303 ManaBloc manifold delivers centralized control of up to 30 PEX supply lines from a single location, simplifying installation and long-term maintenance in residential and commercial plumbing systems. Its broad PEX compatibility, included adapters, and full certifications make it a dependable choice for professional plumbers.

Product Information

Standard Information

• Brand: VIEGA
• Manufacturer Part Number: 50303

Technical Specifications

• Total Ports: 30 (12 Hot, 18 Cold)
• Port Connections: 1/2 inches PEX Crimp
• Hot and Cold Water Inlet Connections: 1 inches (ManaBloc adapters required)
• Branch Spacing: 1-11/16 inches OC (On Center)
• Dimensions (L x H x W): 28-7/8 inches x 3 inches x 8 inches
• Max Pressure Rating: 100 psi at 180 degrees F
• Port Pressure Drop: 3.4 psi at 4.0 GPM
• Port K-Factor: 0.21 (for 1/2 inches PEX)
• Lead-Free: Yes, approved for potable water use
• Certifications: NSF/ANSI 61 and 372, ASTM F876/F877, CSA B137.5, UPC-IAPMO
• Country of Origin: Made in the USA