Non-return valves - Import export

Retaining valve with embossed directional arrow or printed in black. With conical nozzles. Various uses.

Unidirectional valve used for temperatures from −60°C to +550°C, pressures up to PN 400 and designed to prevent from reverse flow of the service fluid. • DN 50 – DN 400 • PN 16 – PN 400

Non-Return Valve

Non-Return Valves WITT non-return valves protect plants, pipelines and outlet points against reverse gas flow and meet all relevant standards and regulations. The product range of non-return valves includes a large choice of nominal sizes (up to DN200) and flow rates (0.35 – 106 SCFH). The sophisticated valve technology of WITT non-return valves provides small pressure drops making them also suitable for applications with smallest opening pressures. A high-quality sealing system with elastomeres prevents leakages, and dirt filters at the inlet point assure long service life of the non-return valves. Some non-return valve models can also be used as flashback arrestors. All non-return valves can be mounted in any orientation, are available with all connections, in brass and stainless steel and are suitable for almost all technical gases.

Non-Return Valves WITT non-return valves protect plants, pipelines and outlet points against reverse gas flow and meet all relevant standards and regulations. The product range of non-return valves includes a large choice of nominal sizes (up to DN200) and flow rates (0.35 – 106 SCFH). The sophisticated valve technology of WITT non-return valves provides small pressure drops making them also suitable for applications with smallest opening pressures. A high-quality sealing system with elastomeres prevents leakages, and dirt filters at the inlet point assure long service life of the non-return valves. Some non-return valve models can also be used as flashback arrestors. All non-return valves can be mounted in any orientation, are available with all connections, in brass and stainless steel and are suitable for almost all technical gases.

Rat Blockers are designed to stop rats travelling through drains and are installed into pipes within inspection chambers (manholes). They are usually installed into the drain outlet, but these models can be easily configured to be fitted into a drain inlet. Rat Blockers allow rats to pass freely downstream, but protect property by preventing their movement upstream. By installing a Rat Blocker into the drain outlet, all upstream branches are protected. Rat Blockers are robust stainless steel devices and are held securely in place with a tight friction fit. Due to their design, these unique Rat Blockers cannot become dislodged into the drainage line. Both designs can be fitted from ground level, using a specially-designed installation pole. Source One Environmental supply two designs of rat blockers and both are available to buy online: Ratwall by Metex and TX11 by Nordisk.

Realized in zinc-coated steel sheet, Ø from 200 mm to 600 mm. Available in plain, flanged and borded version. Product category DUCTWORK

nickel plated brass*non-return valve*female connexion to*water tap Ø outside

nickel plated brass*non-return valve

Non-return valve

Due to their special design, 100 % free passage and low flow resistance, STRATE AWASTOP non-return valves are ideal for: Sewage technology, media with solids and coarse solids, sludge (up to 5 % TM) Fresh and service water technology, including in areas where high pressure losses make powerful pumps necessary On request: pumping of fluids deviating from the media listed Areas where quiet operation is particularly important Non-return valves are recognised all over the world as for universal applications in the pumping of fresh water, effluent, sludge and air. Stand for high operational safety Stand out thanks to their excellent value-for-money and low maintenance requirements 100 % free passage Low flow resistance Quiet operation thanks to the inclined valve seat which shortens the closing distance Minimum clogging tendency through optimum hydraulic design− Fail-safe closing of the valve since the closing element is fixed securely into the valve cover

The STRATE non-return valve RKS is particularly suitable in areas where the prevention of flap impacts is of particular importance. In this application case the extension of the standard butterfly valve RSK by the additional component STRATE spring load (RSK-FT or RSK-FTU) is required Product features (STRATE RSK) Wide flap to prevent piercing, especially at high pressure levels Type RSK-FT: Equipped with exterior spring load to more quickly close the flap and avoid flap impact Type RSK-UD: Bypass line with pressure shock damping valve to reduce/avoid pressure shocks Type FTUD: a combination of the above types to optimally protect the pumps in case of a power outage, etc.

The special lightweight aluminium design and silicone inserts of STRATE sandwich non-return valves SB makes them ideal for: Conveying air and gases up to temperatures of 200 °C Working pressures up to 4 bar Special applications with other valve insert materials on request

The sliding gate motor valve type 8038 in reinforced design with highresolution fast actuatoris suitable for a wide range of process applications. Media such as steam, liquids, gases, etc. can be handled precisely. The interaction of highprecision control electronics with the precise stepper motor results in a positioning accuracy of ± 0.2% even with a valve stroke of only 6 mm. By means of supercapacitor technology, in the event of a power supply failure, the valve returns to its defined basic position. Metal bellows Position electronics Analog stroke feedback Limit switch Fail safe feature

Kendrion has developed a high-quality range of non-return valves for applications requiring non-return and check functions. The shuttle valve or double check valve, respectively, realizes the logical OR function in pneumatic circuits.

Kendrion Automation has developed a high-quality range of non-return valves for applications requiring non-return and check functions. The one-way restrictor with fixed orifice is used where a reduction to low and constant flow values is required. There are different standard orifices available.

Kendrion Automation has developed a high-quality range of non-return valves for applications requiring non-return and check functions. These one-way restrictors can be screwed directly into the ports of miniature valves or cylinders. They are designed as inlet or outlet restrictors and do have either tube nipple connection including nut or push-in fittings.

PP barrel pump with rigid discharge tube. Barrel pumps made of polypropylene allow a fast transfer of liquids from barrels, canisters and tanks. The good chemical resistance of PP allows acids, alkalis and aggressive detergents to be transferred. The low-mounted non-return valve of the barrel pump and the immersion depth that can be steplessly adjusted using the barrel screw joints ensure good removal of residual liquid. The barrel screw joint fastens the barrel's pump securely to the barrel. Barrel screw joints and thread adapters for commercially available containers are available as optional accessories.

The AWALIFT 2/2x2 wastewater pumping system is suitable for towns with up to approx. 2800 residents. The system can achieve a discharge head of up to 120 mWS, thanks to the parallel operation of two pumps. An adapted, intelligent pump controller handles control, ensuring almost fault-free operation. Draining small towns with up to about 2800 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, underground stations etc. Product features One holding tank with two separator systems 2 x 2 centrifugal pumps and motors according to type and operating location required Four pump gate valves Two STRATE non-return valves One Y-pipe DN 100 Two pressure pipe gate valves DN 100 Level measurement

This sewage pumping system can be used for districts with up to 3700 residents and it offers a discharge head of up to 80 mWS. The expanded version, the AWALIFT 3/2x2, even offers a discharge head of up to 120 mWS. Accessories, such as a smart pump controller, a basement drainage pump, pipelines and a variety of flanges within a single building, and much more are available for purchase on request. Draining small towns with up to about 3700 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, underground stations etc. Product features One holding tank with two separator systems Two centrifugal pumps and motors according to type and operating location required Four pump gate valves Two STRATE non-return valves One Y-pipe DN 125 Two pressure pipe gate valves DN 125

The AWALIFT 1/2 is used primarily in municipal applications for draining large properties. It is a fully automated, floodable sewage pumping system with a proven separator system for up to 750 EW. Alternating two pumps provides a high level of operational reliability. There is no need to provide reserve pumps. This system also has a gas and odor-tight tank, the surface of which is coated with high-quality corrosion protection. •Larger buildings, industrial companies, individual streets •Facilities that cannot be drained using natural gradient •As protection from backwater damage •Infrastructure facilities such as airports, industrial parks, subway systems etc. Product features One tank with two separator systems Two rotary pumps and motors according to type and operating location required Two non-return valves AWASTOP DN 100 K Y-pipe DN 100 Two pressure pipe gate valves DN 100 Level measurement LGA certified according to DIN EN 12050-1 /. -4

The STRATE AWALIFT 100 is the system preferred for draining storeys, houses and plots of land below the backwater level in accordance with DIN 1986-100, i.e. for properties that cannot be drained using natural gradient. DIN EN 12056-4 specifies the backwater level here as being the road surface of the connection point to the public sewage system. Single-family homes (e.g. toilet, shower, bath, sink, washing machine) Basement flat Party rooms in the basement Two-family homes Product features One tank with separator system One centrifugal pump and motor according to type and operating location required One non-return valve AWASTOP DN 100 K Level measurement Pump control type AWAmaster 1 1.5 m power supply cable, with CEE plug LGA certified according to DIN EN 12050-1 /. -4

The compact sliding gate motor valve Type 8230 in reinforced design with on/off and control operation is suitable for a wide range of process applications. Media such as steam, liquids, gases, etc. can be excellently controlled. Using supercapacitor technology, the valve returns to its defined basic position when the power supply fails. This competitively priced version with its metal body is a true alternative to pneumatic actuators. Metal bellows Position electronics Analog stroke feedback Limit switch Fail safe feature . . .

The AWALIFT 5/2 achieves a discharge head of up to 50 mWS, and is also available in the AWALIFT 5/2x2 version. This variation achieves a discharge head of up to 100 mWS. Different motor variations allow the system to be precisely adapted to your specific needs, and the impellers are adjusted to the operating point. This system is used for drainage in towns with up to 7,000 residents. Draining towns with up to about 7000 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system. Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, subway systems etc. Product features One holding tank with two separator systems Two centrifugal pumps and motors according to type and operating location required Four pump gate valves Two STRATE non-return valves One Y-pipe DN 150

An especially large system with six pumps and a tank content of 26.0 m3, a system power of 800 m3/h and a weight of approx. 6.3 t can reliably handle drainage for a city with up to 37,000 residents. The unique pump controls achieve a discharge head of 40 mWS, while the AWALIFT 10/6x2 version boosts this discharge head to 80 mWS. Proven components, such as our separator, separating flaps, level controller, etc. are used in this system as well. Draining towns with up to about 37,000 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, subway systems etc. Product features One holding tank with six separator systems Six centrifugal pumps and motors according to type and operating location required Twelve pump gate valves Six STRATE non-return valves One Y-pipe DN 300

With our trusted separator system, suitable for up to 29,000 residents at a system power of 600 m3/h. The base version, the AWALIFT 9/4, achieves a discharge head of 40 mWS, and the expanded version AWALIFT 9/4x2 achieves 80 mWS. Smart pump controllers are available as accessories, and are specially adapted to your system and your specific needs. The impellers are adapted to the operating point to achieve optimal performance. Draining towns with up to about 29,000 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, subway systems etc. Product features One holding tank with four separator systems Four centrifugal pumps and motors according to type and operating location required Eight pump gate valves Four STRATE non-return valves One Y-pipe DN 300 Four pressure pipe gate

With a diameter of 2.5 m and a height of 3 m, the tank and separator system is equipped to reliably drain wastewater for a small city of up to 18,600 residents. In addition, the tank offers a gas and odor-tight seal. Three pumps provide good operational reliability; maintenance work is easy to complete thanks to dry installation. Draining towns with up to about 18,600 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, subway systems etc. Product features One holding tank with three separator systems Three centrifugal pumps and motors according to type and operating location required Six pump gate valves Three STRATE non-return valves One Y-pipe DN 250 Three pressure pipe gate valves DN 250 Level measurement

With a system power of 250 m³/h, the AWALIFT 6/3 achieves a discharge head of 48 mWS. The AWALIFT 6/3x2 version allows for a discharge height of 96 mWS. The fully automated, floodable STRATE AWALIFT system fulfills the requirements of DIN 1986-100 and DIN EN 12056-4. Draining towns with up to about 11,600 residents which cannot be drained using natural gradient or as an intermediate pumping station within the context of a pressure drainage system Residential and industrial areas Towns Communities Infrastructure facilities such as airports, industrial parks, subway systems etc. Product features One holding tank with three separator systems Three centrifugal pumps and motors according to type and operating location required Six pump gate valves Three STRATE non-return valves One Y-pipe DN 200 Three pressure pipe gate valves DN 200 Level measurement LGA certified according to DIN EN 12050-1 /. -4