Valves & Pumps

Design Features Metalsin supplies EN 593 concentric flanged butterfly valves, which are worm gear operated and furnished with a pinless shaft. They have the following design characteristics: Concentric design: It features the valve disc and shaft (stem) that share the same centerline within the valve body, ensuring simple construction and efficient operation. This design is commonly used for low-pressure applications, …

Metalsin supplies double-shaft wafer type butterfly valves manufactured in accordance with EN 593. These valves are widely used in water treatment plants and water supply and distribution lines. Double Shaft vs. One-Piece Through Shaft The shaft of a butterfly valve, also known as “stem”, is a bar extending through the body hubs and into the disc to support the disc …

Design Features Metalsin supplies EN 593 lug type butterfly valves for waterworks projects. The lug butterfly valve is clamped between two pipe flanges of adjacent components when installed. The lug-style body has one integral flange with an identical hole pattern to the piping flanges. The bolt hole on each lug may be either threaded hole or drilled hole. A drilled …

Design Features Metalsin supplies EN 593 wafer type butterfly valves for waterworks engineering. These valves have the following design features: Designed to EN 593: It is the European standard that specifies the requirements for metallic butterfly valves for general purposes. Wafer type body: Also known as flangeless body, it is a flat body that has a minimal face-to-face, which is …

Design Features Metalsin supplies AWWA C504 flanged double eccentric butterfly valves to various waterworks pipelines. The double eccentric butterfly valve, also known as a double offset butterfly valve, features a design where the valve stem is offset from both the centerline of the disc and the centerline of the valve body. The first eccentricity is the offset between the valve …

Metalsin supplies the waterworks project with AWWA C504 flanged concentric butterfly valves which are rubber seated. It features a design where the valve stem axis is perfectly aligned with the centerline of both the butterfly disc and the valve body. This concentric alignment ensures that the disc remains in constant contact with the soft sealing seat (typically made of materials …

The AWWA C504 rubber seated butterfly valve is a valve that uses a disc rotatable through an angle of approximately 90° as a closure member. The valve is closed when the edge of the disc is perpendicular to the flow way, open when parallel to the flow way, or used for throttling when positioned between open and closed. It has …

SJZ Metalsin supplies large diameter gear operated NRS resilient-seated gate valves in accordance AWWA C515. These valves are furnished with flanged ends, machined in accordance with the dimensions of a series of international standards such as ASME B16.1 Class 125, ASME B16.47 Class 150, AWWA C207, EN1092-2 PN10/PN16, BS 4504 PN10/PN16, etc. Both the body and bonnet are made from …

Main Design Features SJZ Metalsin supplies AWWA C500 OS&Y rising stem metal seated gate valves for water supply service. These valves have the same metal-to-metal seals as that of the NRS metal seated gate valves, which are formed between a pair of accurately machined copper alloy seat rings seated/mounted in the body and wedge respectively. The closure member of the …

Main Design Features SJZ Metalsin supplies AWWA C500 NRS metal seated gate valves for water supply service. These valves are furnished with a non-rising stem for limited space installation and flanged ends in accordance with ASME B16.1 Class 125. Both the body and bonnet are made from ductile cast iron (ASTM A395 or A536) or grey cast iron (ASTM A126 …

Design Characteristics & Benefits of Metal Seating SJZ Metalsin supplies BS 5163 metal seated gate valves made of grey (flake graphite) cast iron or ductile (spheroidal graphite) cast iron. These valves shall be furnished with non-rising stems (NRS) and are usually handwheel operated. The closure member shall be a wedged gate, either a flexible wedge or solid wedge. The valves …

SJZ Metalsin supplies BS 5163 non-rising stem (NRS) resilient seat gate valves for the underground use in waterworks. The body and bonnet of these valves are usually made from ductile (spheroidal graphite) cast iron or grey (flake graphite) cast iron. They may be operated by a handwheel, a stem cap to engage with standard operation keys, or an actuator. The …