WATTS 115-4 FL Pressure Reducing Control Valve, 4 Inch Flanged Ports

Watts 115-4 FL (LFF 115-4) pressure-reducing control valve is a self-operating valve that is used to remove excess pressure in a system. This valve automatically adjusts its opening to maintain steady pressure during surges. It is used in gas and water pipelines which deal with regular pressure fluctuation.

Working Mechanism:

• When the downstream pressure drops, the valve modulates towards the 'open' position to raise the downstream pressure.
• When the downstream pressure rises, the valve modulates towards the 'close' position to lower the downstream pressure.

Features:

• Watts 115-4 FL pressure reducing control valve features automatic shut-off to reduce higher, fluctuating upstream pressure to a lower, constant value.
• This unit features iron housing with an epoxy coating for resistance against chemicals.
• It has an adjustable setpoint to handle varying pressure.
• This unit also functions as a solenoid (On/Off) control valve that allows fluid-flow regulation in the 'Open' position and provides the drip-tight mode in the 'Close' position.
• Its simplified and efficient design is easy to maintain.

Standards and Approvals:

• ASTM A536
• NSF

Frequently Asked Questions:

Q. What is this pressure-reducing control valve made of?

A. Watts 115-4 FL pressure-reducing control valve features ductile iron construction to handle vibration during pressure variation.

Q. What is the maximum fluid temperature that this valve can withstand?

A. 160 degrees Fahrenheit.

Q. What are the maximum flow rates that this valve can withstand?

A.

• Maximum continuous flow rate - 800 GPM
• Maximum intermittent flow rate - 1000 GPM