Valves & Pumps

At Metalsin, we supply EN 1074-1 & EN 1074-2 compliant ductile iron resilient seated gate valves for municipal water supply and distribution applications. These valves, either furnished with a non-rising stem or OS&Y rising stem, are isolating valves for potable water, designed and type tested in accordance with EN 1074-1 (General requirements) and EN 1074-2 (Gate valves). Design pressures follow …

Metalsin’s SANS/SABS 664 non-rising stem (NRS) socket end gate valves are engineered for reliability, durability, and ease of installation in a wide range of water and fluid distribution systems. Designed to meet international standards, these valves are an excellent choice for municipal waterworks. Robust Construction The valve body and bonnet are crafted from high-quality ductile iron, ensuring strength and long-term …

Design Features Metalsin supplies SANS/SABS 664 ductile iron resilient-seal flanged gate valves with non rising spindle (NRS) for municipal waterworks. Key design features include: Manufactured in compliance with SANS/SABS 664, the South African National Standard for cast iron resilient-seal gate valves used in waterworks. This standard, published by South African Bureau of Standards (SABS), ensures strict control over materials, design, …

Product Overview An electric vertical fire pump is a vertically oriented centrifugal pump powered by an electric motor, designed to boost water pressure for fire protection systems such as sprinklers, standpipes, or hydrants. Its key components include a vertical motor, shaft, pump bowl assembly, column pipe, and discharge head. When activated, the motor drives the impeller, drawing water from a …

The horizontal split case fire pump (NFPA 20 compliant) is a high-efficiency centrifugal pump engineered to deliver large volumes of water for firefighting applications. Known for its reliability, durability, and ease of maintenance, it is widely used in various fire protection systems across commercial, industrial, and municipal settings. Working Principle The horizontal split case fire pump operates as a double-suction …

Product Overview The Electric Horizontal End-Suction Centrifugal Fire Pump (NFPA 20 Compliant) is a high-performance fire-protection pump engineered to deliver dependable water supply for sprinkler systems, fire hydrant networks, and other firefighting installations. Driven by an electric motor, this single-stage centrifugal pump provides stable flow and pressure during emergency conditions while maintaining energy efficiency during standby. Designed in accordance with …

Product Overview & Design Features Metalsin’s large-diameter resilient seated NRS gate valves are designed and manufactured in full compliance with EN 558 Series 14 (equivalent to DIN 3352 F4) — the European standard defining the face-to-face dimensions and construction characteristics of resilient-seated gate valves for waterworks and pipeline systems. Series 14 (F4 type) specifies a short-pattern design, ensuring compact installation …

Product Overview Metalsin‘s NRS (non-rising stem) resilient-seated gate valves are designed for potable water and wastewater treatment applications, offering reliable shut-off performance and long service life. Manufactured in accordance with EN 558 Series 3 (equivalent to BS 2080 and ISO 5752), these valves feature standardized face-to-face dimensions for easy installation and interchangeability. They are flanged to EN 1092-2 with PN10/16 …

Design Features At Metalsin, we supply ductile iron pump control valves (also known as “slow-shut control valve”) to waterworks applications. The pump control valve is a diaphragm‑type, hydraulically driven valve mounted at the pump outlet. It taps the pipeline’s own pressure as its power source to coordinate perfectly with the centrifugal pump’s characteristic curve. On start‑up, it delays opening gently—allowing …

At Metalsin, we supply the AWWA C515 non-rising stem (NRS) gate valve with a top mounting flange, that allow for the secure attachment of either a post indicator or an adjustable extended stem assembly. These valves are widely used in underground water supply and fire protection services. Top Mounting Flange The top mounting flange offers robust, precise alignment for post …

General Introduction A post indicator is a modified variant of extended stem device used primarily in fire protection systems to provide a visual indication of whether a buried or otherwise inaccessible valve (typically a non-rising stem gate valve) is in the open or closed position. It also serves as a means to operate the valve remotely from above ground, often …

Applications, Advantages & Design Features A gate valve with an extended stem for underground water service is a specialized valve designed for buried applications, such as municipal water supply, fire protection, or irrigation systems. Its extended (often telescopic) stem allows the operator to access and operate the valve from above ground, despite the valve being installed underground. These underground gate …