Watts F1127-8 Instrukcja Użytkownika Pobierz pdf

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

01/05

Classic Series

ONE-WAY FLOW ALTITUDE VALVE

with PRESSURE SUSTAINING

FEATURE

F127-8 (Globe)

F1127-8 (Angle)

Operation

The Watts ACV One Way Flow Altitude Valve with Pressure Sustaining Feature is designed to open, allowing

ﬂow into a reservoir or elevated storage tank (tank ﬁll), and close drip tight when high water level is achieved.

The valve will also throttle to sustain a minimum upstream pressure during tank ﬁlling operations. The

Altitude Pilot remotely senses static tank head pressure (water level) through a ﬁeld installed sensing line,

and directs pressure into and out of the cover chamber of the 3-way Accelerator Pilot. When the cover of the

Accelerator Pilot is pressurized, the main valve cover chamber is vented downstream, causing the valve to

open. When the cover of the Accelerator Pilot is de-pressurized, the main valve cover chamber is connected

to upstream pressure, causing the valve to close drip tight.

As water level decreases, static tank head pressure falls below the adjustable setpoint of the Altitude Pilot,

causing it to pressurize the cover of the Accelerator Pilot, opening the valve. As water level increases, static

tank head exceeds the adjustable setpoint of the Altitude Pilot, causing it to depressurize the cover of the

Accelerator Pilot, closing the valve drip tight. Valve opening and closing speeds are separately adjustable.

The Position Indicator with Air Bleed Petcock allow for visual indication of valve position, and allows easy

venting of air entrapped in the main valve cover chamber.

The normally closed sustaining pilot remains open when upstream pressure is above the adjustable setpoint,

and modulates toward a closed position if upstream pressure falls below the setpoint. As the sustaining

pilot closes, ﬂuid is directed into the main valve cover chamber through the integral oriﬁce of the Accelerator

Pilot, allowing the valve to modulate toward a closed position, raising upstream pressure. Normal tank ﬁll

operation resumes when upstream pressure is above the sustaining pilot setpoint.

Specify Tank height PRIOR to ordering.

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8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com01/05RClassic SeriesONE-WAY FLOW ALT

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.wattsacv.com01/05RClassic SeriesF127-8 (Globe) F

Powiązane modele: F127-8

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