Watts S1116 Manuel d'utilisateur télécharger pdf

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com

01/05

Stainless Series

S116 or S6116 (Globe)

S1116 or S61116 (Angle)

Operation

The Watts ACV Pressure Relief, Sustaining or Backpressure Control Valve is designed to permitting ﬂow

when upstream pressure is above the adjustable setpoint of the control pilot, and throttle toward closed

when upstream pressure falls below the adjustable setpoint. It is controlled by a normally closed control pilot

designed to: 1) Open (allowing ﬂuid out of the main valve cover chamber) when upstream pressure is above

the adjustable setpoint, and, 2) Close (allowing ﬂuid to ﬁll the main valve cover chamber) when upstream

pressure is below the adjustable setpoint. An increase in upstream pressure causes the valve to modulate

toward an open position. A decrease in upstream pressure causes the valve to modulate toward a closed

position.

When the valve is installed “off the main line” on the branch of a tee, it serves as a Pressure Relief Control

Valve. The valve is normally closed, and quickly opens when upstream pressure exceeds the pilot setting,

relieving pressure, commonly discharging to a storage reservoir, pump suction, or atmosphere. When

upstream pressure is lowered below the pilot setting, the valve closes at a controlled, adjustable rate.

When the valve is located “in line” connecting two distribution zones, the valve acts as a Pressure

Sustaining Control Valve. When pressure in the upstream zone falls below the pilot setting, the valve

modulates toward a closed position, sustaining pressure in the upstream zone. The valve will close, if

necessary, until upstream pressure is above the pilot setting. The valve should be speciﬁed to include the

optional opening speed control and position indicator when used for Pressure Sustaining applications.

When the valve is installed “in line” on the discharge of a pump, it acts as Backpressure Control Valve.

When pump discharge pressure falls below the pilot setting, the valve modulates toward a closed position,

increasing backpressure against the pump. The valve should be speciﬁed to include the optional opening

speed control when used for Backpressure applications.

PRESSURE RELIEF, SUSTAINING,

or BACKPRESSURE CONTROL VALVE

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8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com01/05RStainless SeriesS116 or S6116

Page 2

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com01/05RStainless SeriesS116 or S6116

Modèles reliés S116

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