Products supplied by STi

Grundfos NBG end-suction close-coupled pumps are non-self-priming, single-stage, centrifugal volute pumps with axial-suction port, radial-discharge port and horizontal shaft. If you require a multi-purpose pump suitable for a variety of demanding applications, the NBG ensures reliable and effective supply.

Grundfos NB end-suction close-coupled pumps are non-self-priming, single-stage, centrifugal volute pumps with axial-suction port, radial-discharge port and horizontal shaft. If you require a multi-purpose pump suitable for a number of demanding applications, the NB ensures reliable and effective supply.

Grundfos TP, TPE pumps are single-stage, close-coupled in-line centrifugal pumps with mechanical shaft seal and for applications such as heating/cooling/district energy/hot water recirculation. The pumps are with either fixed speed motors (TP/TPD) or speed controlled motors (TPE/TPED/TPE2/TPE2 D/TPE3/TPE3 D).

Grundfos NK end-suction long-coupled pumps are non-self-priming, single-stage, centrifugal volute pumps with axial-suction port, radial-discharge port and horizontal shaft. If you require a multi-purpose pump suitable for a variety of demanding applications, the NK/NKG ensures reliable and effective supply.

Grundfos NKG end-suction long-coupled pumps are non-self-priming, single-stage, centrifugal volute pumps with axial-suction port, radial-discharge port and horizontal shaft. If you require a multi-purpose pump suitable for a variety of demanding applications, the NKG ensures reliable and effective supply.

Submersible Grundfos SEG sewage grinder pumps (0.9-4 kW) are designed for pumping wastewater, sludge-containing water, and sewage. Fitted with a patented grinder system designed to grind the media.

The S pumps are a range of free-flow channel impeller pumps specifically designed for pumping sewage and wastewater in a wide range of municipal and industrial applications.

Grundfos DPK drainage pumps are designed with an enclosed, semi-open or SuperVortex, free-flow impeller for use in many building and industrial applications. Range is 0.75-22 kW.

Submersible and dry-installed Grundfos SE/SL sewage pumps (9-30 kW) are fitted with either S-tube® (SE/SE1/SE2 and SL/SL1/SL2) or SuperVortex impeller (SLV). The free passage through the pump varies from 35-125 mm depending on size and hydraulic variant.

Grundfos EF pumps have a single-vane, semi-open impeller for 30 mm free passage, designed for pumping effluent and other liquids such as drainage and surface water with fibres and small impurities.

UNILIFT AP are submersible wastewater pumps suitable for temporary as well as permanent free-standing installation. UNILIFT AP pumps are suitable for installation on an auto coupling.

UNILIFT KP is a compact stainless-steel submersible pump designed for pumping non-aggressive water and grey water. It can be used as a portable unit or stationary installation inside and outside buildings.

UNILIFT CC is a single-stage submersible pump designed for pumping clean, non-aggressive water and grey water down to 3 mm water level. It has dual outlet, allowing easy adaptation to existing pipes.

Advanced and energy efficient pressure boosting system for boosting of clean water. Available with 2-6 parallel connected pumps, Integrated advanced controller and all necessary fittings.

Vertical, multistage centrifugal pump with suction and discharge ports on the same level. The pump head and base are in cast iron - all other wetted parts are in stainless steel (EN 1.4301)

CM is a reliable, quiet and compact horizontal end-suction pump. The modular pump design makes it easy to make customised solutions. CM is available in cast iron and stainless steel.

Energy efficient pressure boosting system for boosting of clean water. Available with 2-4 parallel connected frequency controlled pumps, Integrated advanced controller and all necessary fittings

Rotary Discharge Bore (mm): 20 - 150   The RS-series rotary air blowers are equipped with a 3-lobe rotor. These blowers have helical structure at the intake and the outlet. This makes the air virtually pass through a gradually closing suction port or gradually opening discharge port. The result is remarkably reduced pulsation noise.

Air-inlet Bore (mm): 32 - 150 Motor Output (kW): 0.75 - 40   The TRN-series is a submersible self-aspirating aerator designed for aeration and mixing of wastewater. The liquid flow generated by Tsurumi's special semi-open impeller causes negative pressure to form on the backside of the impeller vanes and draw in air from above the water's surface. The aspirated air, mixed with water viciously by mechanical forces inside the impeller and guide vane, transforms into tiny bubbles.

Discharge Bore (mm): 50 ･ 80 Motor Output (kW): 0.75 - 11   The SF-series is a submersible high-head drainage pump designed for handling wastewater and liquid carrying ignorable size of solids. A semi-open, multi-vane impeller driven by a 2-pole motor enables the pump to work for pumping from a deep underground or to a distant place.

Air-inlet Bore (mm): 65 - 250 Motor Output (kW): 1.5 - 30   The TAR-series is a submersible air mixer that combines aeration and mixing to promote wastewater treatment at public and industrial treatment plants. The powerful current discharged from the high-performance axial-flow impeller shears the air supplied by the blower into tiny bubbles, forming a furious flow of mixed air and water that efficiently delivers oxygen throughout the wastewater.

[JIN] WESAN WP G horizontal screw-wing large-diameter water meter is mainly used for the measurement of medium and large flow cold water in the water supply pipeline. Features Support horizontal installation and vertical installation Measuring movement can be calibrated individually Closed measuring movement to ensure higher measurement accuracy Dynamically balanced screw-wing movement with minimal pressure loss High-strength wear-resistant impeller to ensure maximum service life Copper sealed tempered glass sealed counter, protection class IP 68 The one-piece head can be rotated 350° for easy reading Integrated data transfer interface as standard Replaceable movement for easy on-site replacement without affecting measurement accuracy Replaceable communication module, easy to replace on site without affecting normal measurement

[GmbH] A bulk water meter designed for measuring volumes of cold water (up to 50°C) in supply lines with high flow at low pressure loss.

The IZAR System provides wireless and wired communication, allowing interoperability and media independence.

[1.3] A static water meter based on the ultrasonic technology, enables accurate calculation of water consumption and eliminates measuring deviations caused by sand, suspended particles or air pockets.

[DN25/32/40] A single jet water meter designed for main metering market, suitable for demanding installation conditions and sediment laden waters. Features DN25/32/40 Q3=6.3m³/h (DN25) / Q3=10m³/h (DN32) / Q3=16m³/h (DN40) MID approval up to R=200H & R=80V Starting flow rate: 9 l/h (DN25) / 15 l/h (DN32) / 25 l/h (DN40) Brass body High resistance to demanding water conditions (sand) Compact and modular

[DN15/20] A single-jet water meter designed for measuring cold water in main metering market, suitable for demanding installation conditions and sediment laden waters. Features DN15/20 Q3=2.5m3/h (DN15) / Q3=4m3/h (DN20) 4 MID approval up to R=160H & R=63V Starting flow rate: 3 l/h (DN15) / 8 l/h (DN20) Brass body High resistance to demanding water conditions (sand, iron) Compact and modular

[DN15/20] A single jet water meter specifically designed for submetering market. It is characterised by its accurate metering capability, its ruggedness and versatility. Features DN15/20 Q3=1.6 m³/h and Q3=2.5 m³/h (DN15) / Q3=4 m³/h (DN20) MID approval up to R=125H and R=63V Starting flow rate : 6 l/h (DN15) / 12 l/h (DN20) Brass and composite body Integrated plastic inlet filter Cold and hot water

[DN50/65/80/100] A bulk water meter designed for water network management and invoicing of substantial quantities of cold water. Features DN50/65/80/100 Q3=25m³/h (DN50) / Q3=40m³/h (DN65) / Q3=63m³/h (DN80) / Q3=100m³/h (DN100) MID approval up to R=800 Starting flow rate: 18 l/h (DN50) Cast-iron body

[DN25/32/40] The latest generation of volumetric meters developed within the framework of the MID and European standards to meet field requirements. Features DN25/32/40 Q3=6.3 m³/h (DN25/32), Q3=10 m³/h (DN25/32) and Q3=16 m³/h (DN40) MID approval up to R=800 (Q3=6.3 m³/h), R=500 (Q3=10 m³/h) and R=1,000 (Q3=16 m³/h) Starting flow rate at 1 l/h (Q3=6.3 m³/h), 2.9 l/h (Q3=10 m³/h) and 4 l/h (Q3=16 m³/h) Brass body Glass-copper register Compact Installation in any position

[DN50/65/80/100] A bulk water meter designed for network metering and invoicing of substantial quantities of cold water. Features DN50/65/80/100 Q3=25m³/h (DN50) / Q3=40m³/h (DN65) / Q3=63m³/h (DN80) / Q3=100m³/h (DN100) Starting flowrate from 18 l/h MID approval up to R=630 (DN 80 & 100) Modular rotating flanges with pipe gaskets High dynamic range

[DN15/20] Compact and durable water meter, suitable for residential installation and supports the IZAR module for stable data transmission. Features DN15/20 Q3=2.5m³/h (DN15) / Q3=4m³/h (DN20) MID approval up to R=800 Starting flowrate at 0.4 l/h Composite & brass version High dynamic range Installation in any position Optional dual-zone filter

[DN: 100...2000]   for various pipe outside diameters Medium: Water,  Wastewater   Flange Adaptor for the connection of pipes with flange and pipes without flange connection. made of steel, ductile iron, UPVC, grey iron, asbestos cement and other.

[PN: 10/16 - DN: 50...1600]   with reduced bore Medium: Water,  Wastewater   Flange Adaptor for the connection of pipes with flange and pipes without flange connection. made of steel, ductile iron, UPVC, grey iron, asbestos cement and other.

[PN: 10/16 - DN: 50...600]   for various pipe outside diameters Medium: Water,  Wastewater,  Sea water   The Flange Adaptor is designed to join pipes made of steel, ductile iron, UPVC, grey iron, asbestos cement and other materials with a flanged connection. The flange adaptor has a wide range tolerance on OD (up to 23 mm) and therefore can accommodate pipes of various outer diameters.

[PN: 10/16 - DN: 50...2000]   for the same pipe outside diameters Medium: Water, Wastewater   The Dedicated Coupling is designed to join pipes of the same outside diameter.

[PN: 10/16 - DN: 50...600]   for various pipe outside diameters Medium: Water, Wastewater   VAG VARIplus-RC Coupling is designed to join pipes made of steel, ductile iron, UPVC, grey iron, asbestos cement and other materials. The coupling has a wide range tolerance on OD (up to 23 mm) and therefore can connect pipes of various outer diameters.

[W: 150...1000 - H: 150...1000]   Shut-off and control valve - four side sealing Medium: Wastewater   Shut-off and control penstock with a compact design (closed frame design); four-side sealing, made of stainless steel, for wall mounting. Especially sturdy design with separate sliding and sealing system. Suitable for use in wastewater applications, water treatment plants, in stormwater retention basins and in flood protection.

[W: 400...1800 - H: 400...1800]   Shut-off and control valve with self-contained frame design Medium: Wastewater   Stainless steel shut-off and control valve with open or closed frame design for wall-mounting. Particularly sturdy design with a newly developed, patented sealing system. Suitable for applications with stringent requirements in terms of tightness in wastewater systems, in municipal sewage treatment plants, in storm-water retention basins, in flood and damage protection as well as in industrial sewage treatment plants and in power plants.

[PN: 10/16 - DN: 50...300]   Pressure reducing valve Medium: Water   Control valve with own-medium control for the regulation of pressure and flow rates in service areas without external power supply. Long service life due to the hard-faced and thus wear-resistant, corrosion- and infiltration-proof seat. The threaded steel sleeves pressed into the body (CORFIX) prevent uncovered spots of the casting and corrosion in the connections of the control lines. Suitable for use in water distribution applications and in pressure management.

[PN: 10/16/25 - DN: 50...200]   Single-chamber type Medium: Water   High-capacity, single-chamber air valve with triple function for venting and releasing air in pipelines as well as for releasing air during operation. Corrosion-proof due to stainless steel inner parts and float made of stainless steel. Safe and reliable operation even at high air-release velocities of up to sonic speed. Suitable for use in water treatment, water distribution, in dams, power plants and in industry.

[PN: 10/16 - DN: 40...300]   Medium: Water / Wastewater / Sea water   Resilient-seated, slanted-seat check valve that opens even at low differential pressures. The disk can be used on both sides, which doubles its useful life. The one-piece and completely rubber-coated disk ensures a completely free passage and reduces the adhesion of dirt particles. Suitable for both horizontal and vertical installation in water treatment plants, in water distribution, in waste-water applications, in power plants and in industry.

[PN: 10/16/25 - DN: 200...1400]   Slanted Seat Tilting Disk Medium: Water / Wastewater / Sea water Metallic-sealing non-return valve with slanted seat for reducing the closing time and with specially shaped disk that supports the opening movement. Also available with internal damping unit for the reduction of pressure surges. The prerequisite for trouble-free operation is a minimum flow velocity of 1.5 m/s in the customer's plant. Suitable for use in water treatment applications, water distribution, in pretreated sewage, in power plants and in industry.

[PN: 10/16 - DN: 50...600]   Disk made of stainless steel - wafer-type Medium: Water   Resilient-seated, wafer-type butterfly valve for flange mounting between pipeline flanges; disk with centric bearing; suitable for use in water applications. With replaceable liner mounted on a vulcanised seal carrier ring, and disk with triple bearing. Suitable for use in water treatment, water distribution, in dams, power plants and in industry.

[PN: 6/10/16/25/40 – DN: 100…4000]   Epoxy. Medium: Water   Double-offset flanged butterfly valve (resilient-seated) with epoxy coating, available with long or short face-to-face length or made of welded steel for use in water applications. Long service life, as the medium does not come into contact with the bearing, and due to the wear-resistant, corrosion - and infiltration-proof seat with weld overlay. Suitable for use in water distribution, water treatment, in pretreated waste water, dams, in power plants, industry and in pressure management.

[PN10/16 - DN40...600]   Resilient-seated - short face-to-face length Medium: Water / Wastewater / Seawater   Resilient-seated gate valve with bolted cover connection and face-to-face length of Basic Series 14 for water applications. Proven design with innovative improvements, such as sliding caps, guarantee low operating torques even after many years of use. Suitable for water-treatment applications, water distribution, in pressure management, in storm water retention basins, in dams, power plants and in industry.