Valves & Pumps

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 …

Ductile iron Y strainers with grooved ends deliver a robust and flexible solution for fire protection and waterworks piping systems by using precisely machined grooves that meet AWWA C606 and ISO 6182 standards, enabling swift and secure coupling with industry-standard fittings. Grooved end connections provide a faster, more reliable alternative to flanged connections by eliminating the need for heavy bolting …

At Metalsin, we supply ductile iron Y strainers with flanged ends for waterworks and fire protection systems. The Y-pattern strainer, often simply called the Y strainer, is a vital filtration device used in piping systems to protect equipment by removing impurities from fluid streams. Its unique Y-shaped design is engineered to create an efficient separation of contaminants from the fluid. …

Design Features The single chamber (SC) pilot-operated pressure reducing valve is a hydraulic control valve that reduces higher upstream pressure to lower downstream pressure regardless of downstream flow fluctuation or variations in upstream pressure. These control valves are widely used in water distribution and fire protection systems featuring: Single-Chamber Design: The single chamber control valve has only one control chamber …

At Metalsin, we supply ductile iron NRS gate valves with a stem cap for waterworks. These valves installed in underground pipelines primarily carrying water intended for human consumption are required to be fitted with a stem cap to enable them to be operated by a ring-key and bar or T-shaped key. These key-operated stem cap gate valves may be designed …