638 SERIES BALL VALVE

Maximum Operating Pressure — 125 psi
Maximum Operating Temperature — 140°F
Ball Through Hole Diameter — .437

Design Considerations

The 638 Series Two-Way Ball Valve design promotes multiple configurations to fit the exact end use application. The 638 Series Valve was originally designed for the water purification industry. Most PVC and White Filled Polypropylene configurations are available as NSF Standard 42 Certified. Filled Polypropylene is available for chemical resistance applications.

Options

Material Options	Gray PVC (Standard), White PVC, White Polypropylene, Black Polypropylene, Black Nylon, Black PVDF (Kynar®)
Seal Options	Buna-N, Ethylene Propylene, Fluoroelastomer (Viton®)
End Options	1/8, 1/4, 3/8 Male NPT 1/4, 3/8, 1/2 Female NPT 1/4, 3/8 SMC Push-To-Connect 1/8, 1/4, 3/8,1/2 Hose Barb Tapered Barb 1/4, 3/8 JACO (Not NSF Standard 42 Certified) 1/2 Female NPT with Stainless Support Ring
Handle Options	Long Handle (Standard), Short Handle

Example of how to order

Body Material
PVC

Inlet End
1/4 MNPT

Outlet End
1/4 FNPT

Seal
Buna-N

Handle
Short

SMC Part Number: PVC 638-4M4F-B,SHORT HDL

The handle will lie over the Inlet port when the valve is in the open position. SMC Part Numbers are a description of the valve as read left to right, Inlet to Outlet.
Example: PVC 638-4M4F-B,SHORT HDL = 1/4 MNPT Inlet x 1/4 FNPT Outlet