PRESSURE REDUCING MODEL 129FC

Product code: 129FC

Pressure Reducing Valve,An automatic, pilot controlled, pressure reducing valve, actuated by the pipeline pressure. The valve regulates to a steady, preset downstream pressure, regardless of upstream pressure or flow rate fluctuations. In case of excessive downstream pressure, the valve closes drip tight.

Zalo

Consulting hotline: 0944934114
Product information

FEATURES & BENEFITS

Maintains constant discharge pressure regardless of upstream pressure or flow rate fluctuations

Easily cleaned, repaired & adjusted without removal the line

Easily adjusted for discharge pressures ranging 50-165psi

Applicable for water, seawater & foam

Out of box fully assembled & tested valves

Factory trimmed for vertical & horizontal installations without modification

Extensive valve & trim materials selection and corrosion protection coating

CERTIFICATION & COMPLIANCE

PRESSURE REDUCING MODEL 129FC

• ANSI FCI 70-2 Class VI seat leakage class

• UL listed under VLMT category

TYPICAL APPLICATIONS

Pump & Water Tanks

Fire Suppression Systems

Petrochemical, Oil & Gas Installations

Tunnels

Power Generation,

Transformer & Transmission Plants

Onshore / Offshore

Mining

OPERATION

The normally open, spring loaded pilot, sensing downstream pressure, responds to changes in pressure and causes the main valve to do the same. The net result is a constant modulating action of the pilot and main valve to hold the downstream pressure constant.

The Model 129FC consists of the following components, arranged as shown on the schematic diagram:

[1] Model 65 Basic Control Valve, a hydraulically operated, diaphragm actuated, globe or angle valve which closes with an elastomer-on-metal seal.

[2] Model 1390 Pilot, a 3-way, normally-open pilot valve which senses downstream pressure under its diaphragm and balances it against an adjustable spring load. An increase in downstream pressure tends to make the pilot close.

[3] Model 159 Y-Strainer, protects the pilot system solid contaminants in the line fluid.

[4] Model 155 Visual Indicator Assembly, (optional) provides indication of the valve position at a glance.

PRESSURE REDUCING MODEL 129FC

TYPICAL MATERIALS

PRESSURE REDUCING MODEL 129FC

PRESSURE REDUCING MODEL 129FC

 

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