Pressure Reducing & Sustaining 1200–10

The model 1200–10  Combination Pressure Sustaining And  Reducing Valve is a Hydraulically Operated Diaphragm Actuated Automatic  Control Valves When Installed in-line ,They Sustain Minimum back pressures thus prioritizing Pressure zones preventing line emptying and it prevents downstream pressure from rising above maximum pre-set

Diameter

DN50 - DN1000

Pressure

PN10, 16 & 25

Model 1200-10 Pressure Sustaining & Reducing Product Overview

The Model 1200–10 Combination Pressure Sustaining and Reducing Valve is a hydraulically operated, diaphragm actuated automatic control valve designed to maintain minimum upstream back pressure, protect priority pressure zones, prevent line emptying, and reduce downstream pressure by keeping it from rising above a preset maximum level.

Product Range

DN50 – DN1000

Pressure Rating

PN10, PN16 and 25

Temperature Range

-20°C TO +70°C

Flange Dimensions

EN1092-2 (DIN2501)

Hydrostatic Testing

EN12266, ISO5208

Type Testing

EN1074-5

Actuation

Hydraulically actuated

Certificates

Manufactured under a certified ISO 9001 quality system

Applications

•  Water pipelines and distribution networks

•  Irrigation pipelines and networks

•  Ground reservoirs and elevated tanks

•  Pumping Stations

•  Water hammer systems

•  Water treatment plant

Main Product Features

  • Uses line pressure for operation with no external power required
    The primary advantage of the hydraulically actuated valve is its ability to use line pressure as motive power, allowing reliable valve operation without external pressure sources or electricity.

  • Ideal for pressure, flow, and level control
    These valves are designed to provide accurate and dependable control of pressure, flow, and liquid level in a wide range of water and industrial pipeline applications.

  • Diaphragm actuated globe valve design for precise control
    The valve features a hydraulically operated, diaphragm actuated globe valve design that delivers smooth modulation, high sensitivity, and consistent control performance.

  • Three major components for durable and efficient operation
    The valve consists of three main components: a ductile iron body with SS316 seat, a reinforced diaphragm assembly, and a cover with an installed bearing for strength and long-term reliability.

  • Single moving part for reduced wear and simplified maintenance
    The only moving part is the diaphragm assembly, guided by a precision-machined stem from both top and bottom, reducing wear and improving operational stability.

  • Reinforced diaphragm for superior sensitivity and response
    The nylon fabric reinforced synthetic rubber diaphragm provides excellent sensitivity, fast response, and accurate control across different operating conditions.

  • Closed-loop pilot control system for automatic adjustment
    The control valve operates as a closed-loop system, using a pilot to compare the spring set-point with the actual process variable and automatically adjust valve position as conditions change.

  • Single set-point control for stable process regulation
    The valve is designed as a single set-point control valve, maintaining the process variable as close as possible to the required setting for stable and efficient system operation.

  • Ductile iron body for high hydraulic and mechanical strength
    The valve body is manufactured from ductile iron, providing excellent strength and durability under high hydraulic pressure and mechanical stress.

  • 316 stainless steel seat for erosion resistance and drop-tight sealing
    The valve is equipped with a 316 stainless steel seat that offers high resistance to erosion, extended service life, and drop-tight sealing for dependable shutoff performance.

Hydraulically actuated control valves use line pressure as the operating force, eliminating the need for external pressure sources or electricity and making them an efficient and reliable solution for controlling pressure, flow, and level in pipeline systems. These hydraulically operated diaphragm actuated globe valves are built with three main components: a durable ductile iron body with a stainless steel 316 seat, a special reinforced diaphragm assembly, and a cover with an installed bearing. The only moving part is the diaphragm assembly, which is guided from both the top and bottom by a precision-machined stem to ensure stable movement, accurate control, and long service life. The nylon fabric reinforced synthetic rubber diaphragm provides excellent sensitivity and precise response across a wide range of operating conditions.

These hydraulically operated diaphragm control valves function as closed-loop control systems, with the main valve regulated by a pilot that compares its spring setting to the process variable, such as pressure, flow, or level. When the process condition changes, the pilot senses the variation and automatically adjusts the valve to keep the system operating as close as possible to the desired set-point. This design makes the valve a dependable single set-point control valve, with set-point adjustment performed by changing the pilot spring setting. The ductile iron valve body is designed to withstand high hydraulic and mechanical stress, while the 316 stainless steel seat offers excellent resistance to erosion and ensures drop-tight sealing for reliable long-term performance.

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