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Arrow Valves Ltd

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York House,
Northbridge Road,
Berkhamsted,
Herts,
HP4 1TA,
United Kingdom

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Products

Midi-Break®

Wall mounted break tank and pump assembly with Fluid Category 5 protection by virtue of the integral Type AB air gap complying with BS EN13077: 2003. The set is intended for light industrial use and is housed in a stainless steel cabinet ready for wall mounting in a frost free environment. The primary purpose is to provide backflow protection in accordance with the new Water Regulations. The Midi-Break® also provides cold water at a known outlet pressure. The unit is quiet since the pump is mounted on anti-vibration mounts with flexible stainless braided internal hoses. Automatic pump control is by means of a pressure vessel, industrial pressure switch and a flow sensor. This system provides reliable pump operation with the minimal amount of starts. The pump has a soft start feature, which avoids water and electrical surges. The pump is protected via low level float switch in the cistern.

Ablution Plant

The Ablution Plant unit delivers hot water at the required safe temperature with the highest backflow protection. The primary application is bidets or ablution hoses adjacent to a WC or bidet. The unit can also be used for many other applications requiring hot water with Fluid Category 5 protection. Toiletry applications are strictly Fluid Category 5, requiring a point of use air gap from the mains water or building supply pipe. There is a duty of care to provide warm water at a safe temperature with suitable legionella controls in place. The Ablution Plant is packaged in a cabinet consisting of a Break tank with type AB air gap complying with BSEN13077: 2003, Booster Pump, Water Heater with thermostat and safety relief valve, Thermostatic Mixing Valve (TMV3, DO8), Controls, fittings and sound proofing.

Boost-A-Break®

Break Tank assembly with Fluid Category 5 protection by virtue of the integral Type AB air gap. The unit is supplied as a complete package on a base plate ready for installation. The primary purpose is to provide backflow protection in accordance with the new Water Regulations. The BTAB unit also boosts the water pressure for elevated areas or where a high flow rate is required e.g. wash-down. The cistern has a screened overflow and weir, making it suitable for unorthodox applications, which require a Hygienic Type AB air gap e.g. butchery and vegetable preparation. The unit is quiet by virtue of a centrifugal pump, anti-vibration rubber feet and flexible stainless braided connection hoses.

DC Pipe Interrupter

DC Pipe Interrupters provide Fluid Category 5 backsiphonage protection (vacuum on the supply). Model DC15C257 is primarily for urinals − enabling flushing directly from the mains supply. Traditional flushing cisterns are not required. Model DC15F257 can be fitted to most standard laboratory taps that have a removable nozzle with a ½” BSP thread. This model has an integral clutch mechanism, which locks the device in place once fully screwed on, preventing any chance of it from being removed. Model DC20F257 fits to an outside tap. A short (600 mm max) unrestricted hose can be fitted for washing chemical toilets and similar Fluid Category 5 applications.

"Conceal-A-Tap®"

Vandal proof and frost resistant hose union tap, which is recessed into a wall. The tap seat is located 100 mm deep into the wall and therefore within the thermal envelope of the building. The outlet drains once the tap is closed and hose removed, the unit is unlikely to freeze. A special key is supplied to extend the telescopic assembly and then the same key operates the tap. The unit is suitable for any thickness of wall (the installer cuts the 15 mm copper tube to the required length. Walls or partitions less than 113 mm would result in the unit protruding behind the panel. The Conceal-A-Tap is ideal for standard cavity walls. The hose usually hangs down to avoid kinking; however the telescopic assembly also rotates to enable the hose to exit in any direction.

Autofill®

Autofill is a new type of pressurisation unit for filling “non-house” heating or chilled water systems. Filling loops with a Double Check Valve must no longer be used for non-house primary circuits - see Water Regulations. Autofill replaces traditional pressurisation units and requires no tank or pump (except model AFP, which has a booster pump for tall buildings without boosted cold water). Autofill is exceptionally compact at just 300 mm square. The unit complies with the new Water Regulations for both filling and pressurising the primary system. The primary components consist of a Fluid Category 4 backflow prevention device, internal mechanical quick-fill valve, top-up pressure controlling equipment, high & low cut-out switches with BMS output, inlet and outlet (system) pressure gauges. The unit is supplied fully assembled and tested. Inlet and outlet stainless steel braided hoses with servicing valves and push fit connections are provided to facilitate installation.

Pent-A-Boost®

Compact booster pump set designed to boost pressure for tall buildings where the mains supply is inadequate, e.g. penthouse suites. The unit is supplied as a complete package on a stainless steel base plate ready for installation. The set is approved for drinking (wholesome) water applications since it has a screened overflow and vent, conforming to G16.13. The primary purpose is to boost the water pressure for elevated areas or where a high flow rate is required, e.g. for showers or baths. The performance to compactness ratio often enables the unit to be installed in a ground floor cupboard rather than a full size plant room. Frequently one unit per luxury apartment is used. The unit is quiet by virtue of a centrifugal pump, anti-vibration rubber feet and flexible stainless braided connection hoses. Fast filling is acheived by a servo-controlled solenoid valve with solid-state level probe control. This system has proved to be more reliable and accurate than conventional float valves. The small cistern and high throughput minimises the risk of legionella.

Dose & Fill® Pressurisation & Dosing Unit

Dose & Fill® has been developed to combat the growing costs and problems associated with heating systems starved of inhibitor. Modern systems frequently have aluminium heat exchangers, steel panel radiators & thin copper tubing, requiring adequate levels of inhibitor to avoid perforations, blockages and to validate the manufacturers' warranties. Traditionally a system is manually dosed via a dosing pot after the initial fill. However, this is diluted every time the pressurisation unit adds plain water following normal minor losses or after partial draining for maintenance. Dose & Fill® is a compact & wall mounted filling and automatic make-up unit for adding water to a sealed system. The Dose & Fill® incorporates the Arrow Valves Midi-Fill Digital® pressurisation unit, whilst the lower half of the 1 m tall enclosure contains a 20 litre chemical container. In "Auto Dose" mode, the unit monitors the quantity of water added by the pressurisation unit and then the dosing pumps automatically inject inhibitor into the heating system according to concentration set via the LCD digital display. The correct concentration is therefore maintained. Dose & Fill® has been designed to comply with the Water Regulations, providing Fluid Category 5 backflow protection for filling and top-up of "non-house" heating or systems.

Midi-Fill Digital® Pressurisation Unit

Midi-Fill Digital® has been designed to comply with the Water Regulations, providing Fluid Category 5 backflow protection for filling and top-up of other than a house heating or chilled systems. Filling loops with a Double Check Valve must no longer be used for other than a house primary circuits. Midi-Fill Digital is a compact & wall mounted filling and automatic make-up unit for adding water to a sealed system. The primary components consist of: Fluid Category 5 backflow prevention for intial fill & top-up, pump with anti seize daily pulse feature, high & low pressure cut-outs with boiler control output, comprehensive BMS controls, digital display, self test monitoring system alerting of pressurisation fault before heating system is shut down, electronic water meters with monthly excessive filling warning trigger, pressure transducer. The unit is supplied fully assembled and tested. Inlet and outlet stainless steel braided hoses with Servicng Valves and push fit connections are provided to facilitate installation.

Arrow Stealth Booster

Ultra-compact Domestic Booster Set with integral Automatic Bypass Valve. The unit is designed to boost pressure for tall buildings where space is limited and the mains supply is inadequate. The Arrow Stealth Booster is supplied as a complete package on a stainless steel base - the exceptionally small footprint allows the unit to be installed in a kitchen cupboard, negating the need for a plant room. The integral Bypass Valve ensures a continued mains supply (at mains pressure) in the event of power failure or maintenance. The variable speed pump, anti-vibration rubber feet and flexible stainless braided connection hoses result in the unit being extremely quiet during operation. Fast filling is achieved by a servo controlled solenoid valve with solid-state level probe control.

RPZ Valve - "Option B"

Mechanical backflow preventer approved for protection against backpressure and back siphonage for Fluid Categories 1 − 4. RPZ Valves (BA devices) are acceptable to all water companies in the U.K. - when installed and used in accordance with the Water Regulations. The "Option B" RPZ valve assembly includes upstream and downstream isolating valves, strainer and non-return valve.

Pillar Standpipe

Tamperproof and inconspicuous Standpipe enclosure with removable Hose Union Tap for a hose pipe where the risk is Fluid Category 3. When closed, the Standpipe resembles a Pillar with all internal components including the tap outlet concealed. The hinged lid can be locked shut with the supplied key, ensuring the Standpipe is tamperproof. The removable tap outlet has a push-fit connection. Inserting the tap outlet into the tap body automatically opens the flow of water with one simple action. Once the tap outlet has been inserted, it is free to rotate to find the optimum position for the desired use. The Standpipe features a flange at its base for bolting to a horizontal hard surface. The stainless steel housing includes foam insulation, which provides some frost resistance. The Standpipe assembly features a Double Check Valve providing Fluid Category 3 protection. A servicing valve is also supplied and all serviceable components are accessible from the front.

Hose Tap Box − 500 Copper Tube

Compact wall mounted stainless steel box with spherical type tap and hose connection. The tap is foam insulated and therefore offers reasonable frost protection. The Tap Box has a hinged lid, which can be padlocked closed. A hose shield is available as an extra, which improves the frost protection and prevents unauthorised removal of the hose or DB Pipe Interrupter. The Tap Box is available to suit most configurations. Model HUTB is rear entry, where the copper tube supplied passes through the wall. This arrangement offers good frost protection since none of the pipe is exposed. The factory-fitted 500 mm length of copper tube is cut to length after installation. This model is also available in 22 mm, which has a larger tap and box, plus a higher flow rate and better frost protection. For new installations where at least 30 mm of copper tube is already protruding from the external wall, it is possible to fit the Tap Box model HUTB after removing the copper tube supplied.

Standpipe FC3 - SPED

Tamperproof Standpipe enclosure with Hose Union tap a hose pipe where the risk is Fluid Category 3. When closed, the Standpipe conceals the tap and hose connector. Tamper-proofing is achieved using the optional padlock. The Standpipe has two operating positions; mid position (front cover slides down to expose the Hose Union tap leaving the hose connection concealed) and lower position (front cover slides down further when filling buckets). The hose can be left connected in all positions. A padlock is required to secure the cover in the top (shut) and mid positions. The robust galvanised steel housing provides a dgree of frost protection. The Standpipe features a low loss Double Check Valve providing Fluid Category 3 protection and affords a good flow even in in low pressure areas by virtue of high flow cartridges.

Standpipe Tap Box

Tamperproof outside hose tap in stainless steel enclosure, with spherical type angled valve and hose connector. The SPTB has a hinged tap cover, which can be secured with a padlock, to prevent misuse or tampering. The permanent low level Standpipe is designed to be buried in soft ground (such as flower beds). The height from the outlet to ground complies with the Water Regulations. The outlet is horizontal, which is ideal for a hose pipe. The housing includes foam insulation, which provides a reasonable level of frost protection, which provides a reasonable level of frost resistance for the valves and pipe. The Standpipe features a Double Check Valve providing Fluid Category 3 protection. A servicing valve is also supplied and all serviceable components are accesible from the front.

Automatic Flow Limiting Valves

Quarter turn Servicing Valve with a ball capable of accepting an Automatic Flow Limiting Cartridge to limit the flow of hot and cold water according to its flow rate. A side port allows the Cartridge to be fitted inside the ball after the valve has been installed. Cartridges can be removed in service through the side port without draining the system. Knowing the maximum flow rate enables the designer to accurately size pipes, pumps, heaters and the supply system. Limiting the flow can save water and/or assist with balancing thereby preventing some appliances, at higher level or farther downstream, are starved of water. A colour-coded Identity Disc stating the flow rate and "Arrow Valves 01442 823123" is fitted to the knurled Plug to indicate the Cartridge inside. Valves should be installed, the system flushed and chlorinated before the Cartridges are inserted.

“Equi-Flow” Shower Limiter

Automatic Shower Flow Limiter with integral variable orifice cartridge, which limits the flow of water according to one of three selected flow rates; 0.13 Lt/s (white), 0.1 Lt/s (black) or 0.17 Lt/s (blue). Fitted between the tap and hose "Equi-Flow" limits the amount of water to each shower, ensuring even distribution. This prevents some showers (e.g. on the ground floor) from receiving excessive flow whilst others (e.g. on the top floor) receive very little. Saves water and energy making it ideal for for multiple occupancy building such as hotels, flats and student accomodation. Easily installed; simply screw onto the inlet of shower hose. Supplied with rubber sealing washer.

Rainwater Header Break Tank Wall Tray

Rainwater header tank supplies rainwater under gravity to appliances with an automatic mains water backup facility. The primary benefit of this header system is the continuation of water supply during electrical power failures. The rainwater model is similar to the AB18 but features a second float valve − for mains water top-up, set to open at a lower level. Typically the cistern will be full of rainwater having been pumped from a large underground storage tank. If there is insufficient rainwater or electrical failure, the cistern will automatically top-up with mains water. The AB18T should be mounted sufficiently higher than the application − e.g. 5 m = 0.5 bar. Note − minimum pressure required for washing machines. Where there is insufficient head refer to pumped systems - “Boost-A-Break” (BTAB) or “Midi-Break” (BTMIDI). Up to 12 litres of rainwater can be drawn off before the mains float valve opens. In practice, the rainwater float valve normally fills at a similar rate as the draw off preventing unnecessary mains top-up when rain water is available.

ByPass Valve Assembly

Automatic bypass valve assembly enabling the supply of mains water should a pump set fail. The assembly features a special low head-loss Double Check Valve assembly and four full bore isolating valves with unions. In service, the boosted water pressure is normally higher than mains and the Double Check Valve is closed. If the pumps fail (or are turned off for maintenance) water continues to the system at mains pressure, whcih is often sufficient to provide water for domestic purposes. Traditionally bypasses are considered a source of stagnant water and a backflow risk. However the Arrow Bypass Valve has minimal volume and the water is flushed either side by the flow to the cistern and from the pump. The assembly has four servicing valves on a single convenient manifold. Servicing valves are provided for: Incoming (mains), supply from pump, supply to pump set float valve, outlet to building.

Dosing Pot

Dosing Pot for adding liquid chemicals, such as corrosion inhibitors and anti freeze solutions, to sealed heating and chilled circuits. The Pot should be connected between the main flow and return pipes, with the flow at the bottom to aid venting. The Dosing Pot is supplied with five full-bore spherical servicing valves, safety check valve, funnel and mounting brackets. The safety check valve is designed to prevent blow-back up the funnel thereby protecting the operative. The unit is normally wall mounted at a convenient height. A wall stand is available. The connections are reversible for left or right handed or inline installations.

Expansion Vessel

Range of expansion vessels for accommodating the thermal expansion of sealed heating systems. Model EVCP is rated at 4, 5 or 6 bar depending on size and approved for primary circuit unvented heating applications. These systems normally feature a pressurisation unit such as the Arrow Valves “Autofill”.

FilterBall

Quarter turn Isolating Ball Valve with removable Strainer inside the ball. In the closed position, both upstream and downstream connections are isolated and the Strainer can be inspected and removed through the side port. This single unit replaces the traditional Y Strainer and two Isolating Valves. The single unit reduces installation time, joints, space and cost. Furthermore the headloss is less than a comparable Y Strainer due to the straight-through design.

Pressure Reducing Valve (PRV)

The 535 PRV is designed to provide a constant outlet pressure despite varying inlet pressures. The outlet pressure is adjustable between 1 and 6 bar. The inlet pressure must be higher than the desired outlet pressure. The outlet pressure is factory set at 3 bar and adjustments can be made at any time by rotating the cap above the pressure indicator clockwise for higher pressure, anti-clockwise for lower. A pressure gauge is supplied with each PRV, which indicates the outlet pressure. This may be removed and a plug fitted (supplied) if required. The gauge may be rotated half a turn to facilitate right and left configuration. This direct acting PRV may be installed in horizontal or vertical pipes. Flat-face unions enable the valve to be quickly installed and orientated and a range of connections are available to suit various pipes.

Thermostatic Mixing Valve 5213 c/w AFL

Model TMV5213 is particularly compact whilst retaining the benefits of union inlet connections and integral check valves. The 15 mm valve is DO8, TMV3 and WRAS approved. TMVs blend hot and cold water at point of use to provide warm water to basins, showers and baths. When installed and maintained correctly, the TMV will fulfil the Duty of Care requirements against scalding. Legionella bacteria breed in warm water (20-45 degrees C), so to avoid this condition hot water should be stored at 60-65 degrees C and distributed at not less than 55 degrees C. The cold water should be supplied below 20 degrees C. Proportional control on both the hot and cold provides an accurate outlet temperature, which is adjustable between 30-50 degrees C by means of a tamperproof adjustment. Low loss check valves are incorporated into the hot and cold tails, which provide the necessary backflow protection against hot water (Fluid Catgory 2). Flat-faced unions enable the TMV to be easily removed if required. Servicing Valves hould be fitted to the hot and cold supplies to aid maintenance (Clause G11.1). The Arrow Valves TMV is normally supplied with AFL (Automatic Flow Limiting) Servicing Valves. These valves enable a strainer only or combined strainer and Automatic Flow Limiting cartridge to be fitted and removed through the side port without disconnecting pipes. In addition the cartridges can incorporate an Automatic Flow Limiting facility to assist water conservation and unbalanced supply pressures. TMVs perform best with equal supply pressures, e.g. unvented hot and cold.

536 PRV Gauge 0.5-6 bar Compression

The 536 Pressure Reducing Valve from Arrow Valves is designed to provide a constant outlet pressure despite varying inlet pressures. The outlet pressure is adjustable between 0.5 and 6 bar. The inlet pressure must be higher than the desired outlet pressure. The outlet pressure is factory set at 3 bar and adjustments can be made at any time by removing the tamperproof disc on top and inserting the hexagon key (supplied). Turn clockwise to increase the pressure. A pressure gauge is supplied with each PRV (DN65 has two gauges), which indicates the outlet pressure. This may be removed and a plug fitted (supplied) or a self-seal probe test point can be supplied. Two gauge ports are provided to allow right and left configurations. This direct acting PRV may be installed in horizontal or vertical pipes. Flat-faced unions enable the valve to be quickly installed and orientated and a range of connections is available to suit various pipes.

About us

Arrow Valves Ltd provides a series of innovative, high quality, durable, water related products. Our range is designed to enable M&E specifiers and contractors to comply with Water Regulation requirements. Our cost effective technical products and high quality support service ensures our customers are assisted throughout the specifying and buying process.

Our comprehensive range, many water and energy saving (KIWA UK / WRAS Approved), include products for:

Backflow Prevention (Categories 5-4 and 3-1) − Booster Pumps −Non-Return Valves − Pressure Regulating − Flow Control and Measurement − Washroom − Care Shower - Heating − Isolating − Standpipes & Taps (Conceal A Tap & Tamperproof Standpipes & Hose Union Bib Tap)

From specifying through purchasing and onto after sale servicing you can rely on Arrow Valves to ensure the smooth running of any project no matter how large or small. We have accredited Service Engineers nationwide to undertake necessary annual testing.

Arrow Valves Team is BPEC qualified in Water Regulations - You will receive precise information and advice from our team, giving you peace of mind.

For high standard products, specialist expert service to assist with the essential task of adhering to the Water Regulations, contact Arrow Valves Ltd. For immediate technical information on products, quotations and more details on Water Regulations please visit our website.