Gate valves

SIERRA Model 3100 – 3300 – 4300 is a ductile iron full bore double – flanged metal – seated gate valve designed to comply with ISO 5996 and BS 5163 for water, wastewater, irrigation and sewage applications

Diameter

DN50 - DN1000

Pressure

PN10, 16 & 25

The GCF/SIERRA gate valve  is a ductile iron full bore double – flanged metal – seated gate valve designed to comply with ISO 5996 and BS 5163 for water, sewage and industrial applications.

They can be long body oval type series 4300 or short flat type 3100 & 3300 series.

The Gate valves are available with Non-Rising Stem (NRS) or outside stem & yoke (OS&Y).

They can be equipped for manual operation by tee cap or handwheel.

They can also be supplied to order with gearbox or electrical actuator.

Gate Valves Range

  • Flat Type Series 3100

  • Short Bed type Series 3300

  • Long Bed type Series 4300

Main Product Features

Double flanged body design for secure pipeline connection

The metal seated gate valve is designed with a double-flanged body to provide strong, stable, and reliable connection in high-pressure pipeline systems, ensuring easier installation and dependable long-term performance.

Full bore design for maximum flow capacity

Its full-bore construction allows unrestricted flow through the valve, helping reduce head loss, improve hydraulic efficiency, and support optimum performance in demanding water transmission applications.

Oval body type for high-pressure applications

The oval type of body design is especially suited for high-pressure applications, offering enhanced structural strength, improved resistance to internal loads, and reliable operation under severe working conditions.

Available in flat, short bed, and long bed configurations

The valve body is available in flat, short bed, and long bed designs, providing installation flexibility and allowing the valve to meet different project and system requirements.

Metal-to-metal seating for durable shutoff performance

The valve uses a metal-to-metal seat sealing design that provides high durability, excellent wear resistance, and dependable sealing performance in heavy-duty service conditions.

Flexible wedge with wear-resistant guides

The valve is equipped with a flexible wedge fitted with wear-resistant guides, improving seating accuracy, reducing friction, and enhancing durability during repeated operation.

Non-rising stem or outside stem and yoke options

The design is available with either a non-rising stem or an outside stem and yoke, allowing selection based on operational preference, installation space, and maintenance requirements.

Stuffing box designed for repacking under pressure

The stuffing box is engineered to permit repacking under pressure, helping simplify maintenance, reduce downtime, and improve serviceability in critical systems.

ISO 5996 body markings for compliance and traceability

All required markings are cast on the valve body according to ISO 5996, ensuring compliance, product identification, and easier traceability during installation and operation.

Integrated bypass valve for controlled pressure equalization

The valve includes a bypass valve to support controlled pressure equalization, facilitate smoother operation, and improve safety during opening and closing.

Drain plug for easier maintenance and inspection

A built-in drain plug allows convenient draining of the valve body, making maintenance and inspection easier and more efficient.

Stem thrust bearing for smoother valve operation

The inclusion of a stem thrust bearing helps reduce operating effort, improve stem movement, and support smoother, more reliable valve operation.

Reinforced gasket seal between body and bonnet

A reinforced gasket seal between the body and bonnet improves sealing integrity, enhances pressure containment, and supports long-term leak-tight performance.

Integral feet for DN1500 valve stability

For DN1500 valves, the design includes integral feet to provide added support, improve stability during installation, and facilitate handling of large valve sizes.

Lifting eyes for safe handling and installation

The valve is equipped with lifting eyes to enable safer transportation, easier positioning, and more efficient installation on site.

Stainless steel air vent for corrosion-resistant venting

A stainless-steel air vent is included to provide reliable venting performance, excellent corrosion resistance, and longer service life in demanding operating environments.

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