General information Gate valves
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- Clemence Powers
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1 General information Gate valves In 1957, Hawle invented the resilient-seated gate valve with multiple O-ring sealing of the valve spindle and had it patented. Today, this type of gate valve is the standard equipment in the field of potable water supply. On the basis of this patent further innovations have been developed by and by, among them, for example, the exchange gate valve, the combi valve, the gate valve with PE fusion ends, the push-fit socket valve, etc. Hawle gate valves are characterized by smooth operation, a long service life, and a great diversity of variants. dirt wiper locking ring of POM O-ring carrier spindle of stainless steel back seal sealed screws chambered flat gasket bonnet edge protection wedge nut resilient seated wege wedge guide body double-function socket tension lock for doublefunction socket base holding lugs for Hawle-Stop Figure: BAIO spigot end socket valve E2, type A 01/ subject to change without notice
2 General information Gate valves Gate valves for sewage water Pressure drainage systems in sewage water plants require gate valves that are suitable for buried installation, on the one hand, and that are equipped with a shut-off element resistant to sewage water and durably functioning, on the other hand. The Hawle gate valves for sewage water are provided with a shut-off blade of hard-rolled stainless steel and an O-ring package for shutting off. The sealing system prevents solids from sticking to the spindle and permits the exchange of the valve bonnet without taking the pressure line out of order. O-ring carrier chambered bonnet - spindle outside the flow medium spindle of stainless steel shut-off blade of stainless steel gasket element of sewage water resistant NBR gasket carrier of plastic Figure: Gate valve for sewage water with loose flanges 05-B 05/ subject to change without notice
3 Gerneral information Gate valves Actuator set The actuator set is used to open and close buried Hawle gate valves and butterfly valves. The actuator set consists of a watertight PE chamber, of the valve to be operated, and the actuator. All these components are factory preinstalled. The actuator set replaces costly and maintenance prone manhole constructions. All works (e.g. dismantling of the actuator) can be performed from ground level, thus avoiding the dangers and complications associated with entering manholes. Control system The related control unit can be accommodated in a meter box or alternatively in a nearby building. The actuator and the control unit are to be linked and connected by the customer via two cables (energy supply actuator, signal transmission). meter box with control unit surface box electric power control line actuator set valve Data communication The communication between the external station (actuator set with control system) and process control can be realized either via Ethernet Modbus TCP, RS485-Modbus RTU, GPRS, If you need more information on the actuator set, please contact us! 05-C 01/ subject to change without notice
4 Gate valves Resilient seated gate valve E2 Technical features: Resilient seated gate valve with rubberized wedge Free-moving due to central wedge guide and POM sliding blocks Long service life due to Hawle epoxy powder coating Designed acc. to DIN EN 1074, DIN ISO and ISO 7259 Pinless fixing of extension spindle via round thread up to DN 200 Technical data: Body: Bonnet: Corrosion protection: Wedge / gasket: Spindle: GJS-400 GJS-400, with countersunk screws sealed with stearin Hawle epoxy powder coating GJS-400, lined inside and outside with EPDM for drinking water and NBR for gas collar of stainless steel with rolled and burnished thread Spindle gasket: exchangeable O-ring carrier of brass acc. to ISO 7259 Edge protection: Round thread adaptor: Medium: Max. operating pressure: PE PE, for pinless fixing of extension spindle potable water natural gas (acc. to DIN EN 437) 16 bar* / 25 bar * (water) 5 bar* / 10 bar * / 16 bar * (gas) *depending on nominal width and order number Spindle revolutions and maximum closing torque required DN Revolutions Stroke (mm) Max. closing torque at 16 bar (Nm) Spindel-square (mm) 12,3 12,3 12,3 12,3 14,3 17,3 17,3 19,3 19,3 19,3 24,3 27,3 27,3 27,3 32,3 32,3 36,3 36,3
5 Gate valves Resilient seated gate valve K3 Technical features: The shut-off blade of stainless steel seals against a minimized elastomer gasket surface in the body Spindle bearing free from non-ferrous metal Reliable, free-moving, thus effort-saving Complete protection against corrosion Technical data: Body: Bonnet: Corrosion protection: Shut-off blade: Sealings: Spindle: Spindle sealing: Spindle bearing: Edge protection: Holding elements: Medium: Max. operating pressure: GJS-400 GJS-400 Hawle epoxy powder coating stainless steel EPDM collar of stainless steel with rolled and burnished thread via inserted O-rings and POM sliding rings via POM friction washers with engaged plastic part plastic stainless steel potable water 16 bar Max. closing torques: DN DN 80 DN 100 DN 125 DN 150 DN 200 Revolutions Stroke (mm) Max. closing torque at 16 bar (Nm) spindle square (mm) 17,3 19,3 19,3 19,3 19,3*
6 Gate valves Gate valve for sewage water Technical features: Ideal for sewage water pressure pipes Suitable for buried installation Spindle not in contact with the medium Reliable shut-off function due to shut-off blade of stainless steel and O-ring profile gasket Bonnet exchangeable under pressure Pinless fixing of extension spindle via round thread adaptor Long service life due to Hawle epoxy powder coating Technical data: Body: GJS-400 Bonnet: GJS-400 Corrosion protection: Hawle epoxy powder coating Shut-off element: hard-rolled, stainless steel Spindle gasket: O-ring adaptor of brass (exchangeable for DN 80 and higher) Sealings: elastomer suitable for sewage water Medium: municipal sewage water (acc. to EN 1085:2007) Max. operating pressure: 10 bar Gate valve with loose flanges, group 15, DN 80 - DN 250 Gate valve with loose flanges, group 14, DN 80 - DN 200 Gate valve with BAIO sockets DN 80 - DN 150 Gate valve with BAIO socket and spigot end, DN 80 - DN 150 Model no. 481 Model no. 482 Model no. 480 Model no. 483
7 Gate valves Knife gate valve Technical features: The knife gate valve can be installed both between two flanges, or, using an opposing flange, at the end of a pipeline. High corrosion resistance Straight-through bore Operation via handwheel, shut-off key, extension spindle or electric actuator Body: GJL-250, Hawle epoxy powder coated Bearing block: DN aus GJS-400, DN of GJL-250, Hawle epoxy powder coated Spindel/knife: stainless steel Back rest: GJL-250, Hawle epoxy powder coated Spindle nut: brass Tie bar: stainless steel Bolts/nuts: stainless steel Cross sealing and U-shaped: elastomer Fiction washer: POM Flange mating dimensions: PN 10 Medium: for fluid, viscid, and dry media, e.g. in sewage treatment plants, the paper industry, the raw material industry, the chemical and animal foodstuff industries Max. operating pressure: up to DN 200: 10 bar higher than DN 200: 6 bar
8 General information Butterfly valves The Hawle PRO butterfly valve is provided with a proportional action gasket system. The gasket is accommodated in the body of the butterfly valve. When open, the same pressure is admitted to the butterfly valve from all sides, thus reliably preventing unintended deformations of the gasket. As soon as the Hawle PRO butterfly valve is moved to closed position, the valve gasket is pressed against the valve disc. The contact pressure depends on the potable water pressure. The proportional action sealing system ensures reliable gasket, on the one hand, and a long service life due to low wear of the gasket, on the other hand. The Hawle PRO butterfly valve is provided with the proven restraint loose flange system that is also used for the Hawle exchange gate valve. This is especially favourable when old valves have to be exchanged. Due to the integral loose flange system a dismantling piece is not required for new constructions. Hawle PRO butterfly valve - versions with handwheel with electric actuator with pneumatic actuator with extension spindle for buried installation
9 Butterfly valves Hawle PRO butterfly valve, Order No. 500 Technical features: Proportional acting sealing system (see next page) Easy installation due to loose flange system (see next page) Advantages for storage due to exchangeability of flanges (e.g. from PN 10 to PN 16) Flange gaskets already included in barrel gaskets Self-locking worm gear, with position indicator for installation in plants Blow off resistant fixing of shafts and sleeves (EN 593) Technical data: Body/flange: Valve disc and shaft: Gasket seal: Barrel gasket: GJS-400, Hawle epoxy powder coated stainless steel EPDM / reinforced with a ring of stainless steell EPDM Retaining ring: for DN 150 through DN 400 for DN 500 through DN 600 Medium: potable water Max. operating pressure: 16 bar
10 Butterfly valves Hawle PRO butterfly valve Proportional acting gasket system: Innovative proportional acting gasket system in the valve body Stress-relieved bearing of gasket in open position Low operating torques Maintenance-free due to low-wear design Sectional view gasket system Operating pressure presses gasket ring against valve disc Operating pressure presses valve disc against gasket Loose flange system: Two restraint loose flanges (PN 10 or PN 16) Flange gasket already included in barrel gaskets (lip seals) -> therefore, no keying required between the flanges when installing the valve in the gap in the pipeline. locking ring loose flange flange gasket (lip seal) body
11 General information Pipe drilling saddles Hawle pipe drilling saddles for DCI, steel and AC pipes are provided with the universal strap system. Due to this universal strap system the same type of pipe drilling saddle can be used for pipe diameters DN 65 to DN 500. Adaptation to the respective pipe is effected via the holding strap and the saddle seal supplied with this strap. This universal strap system involves considerable economies in terms of storage. For AC pipes, regulations specifies holding straps with a width of mm (depending on the drilling diameter) to protect the pipe. Therefore, the width of Hawle straps for AC pipes is generally 90 mm for all nominal widths. If the pipe outside diameter is unknown, a special universal holding strap can be used, which is adapted on site. (Only for potable water and sewage water pipes.) For plastic pipes (PE/PVC), pipe drilling saddles featuring the HAKU system are to be used. This system consists of two metal saddle halves provided with Hawle epoxy powder coating and connected via four screws. The width of HAKU saddle halves clearly exceeds the requirements specified in DIN We calibrate the saddle halves to the outside diameter of the plastic pipe. When connecting the saddle halves, an inadmissible deformation of the pipe is prevented by metal stops of the screws. Sealing to the pipe is effected via inserted gaskets in the upper and lower shell. The saddle halves shall be installed by tightening the screws all the way to the stop at the torques specified in the respective operating instructions, depending on the pipe outside diameter. Some versions of the HAKU system my be installed and connected with positive locking by means of wedge lock instead of screws. In addition to the numerous pipe drilling saddles without shut-off device, there are mainly four different drilling saddle systems with permanent shut-off device. Pipe drilling saddle type Hawlinger : drilling from above, shutting off via shut-off blade of stainless steel - see figure on the following page Milling saddle: drilling via integral milling cutter Valve saddle: lateral drilling, shutting off via resilient seated wedge Drilling saddles with auxiliary shut-off device: auxiliary shutting off by means of a shut-off blade of stainless steel, lateral drilling or drilling from top possible
12 General information Pipe drilling saddles Pipe drilling saddles Hawlinger Pipe drilling saddles type Hawlinger consist of the connecting element for the respective main pipe (e.g. universal strap system for DCI, steel, and AC pipes, and/or HAKU system for PE, PVC pipes), the shut-off mechanism consisting of a shut-off blade of hard-rolled stainless steel, and the Hawlinger bonnet with the three main versions: One upper outlet ( A ) One upper outlet and one outlet 90 to pipe direction ( U ) One upper outlet and one outlet in pipe direction ( S ) The outlets are either designed as ZAK sockets or provided with female thread. For more informationen on the ZAK system please refer to Section 2. spindle and shut-off blade driving mechanism of stainless steel 1 - Hawlinger body: GGG 40 epoxy powder coated O-ring DCI, steel of AC pipe countersunk hexagon socket screws grouted with stearin round thread to accommodate the cover of the extension spindle back seal shut-off blade: stainless steel strap: either - fully rubberized - 100% stainless steel chambered flat gasket 1 1/2 - Hawlinger Figure: Pipe drilling saddle type Hawlinger for DCI, steel, and AC pipes with upper ZAK outlet
13 General information Pipe drilling saddles Hawlinger for later drilling DIN 1988 prohibits the previous installation of service lines with the main line already drilled in the construction phase and the line just temporarily shut off via a shut-off device (e.g. gate valve). Due to the Hawlinger for later drilling as well as accessories such as a conduit and a special surface box it is possible to meet the hygienic requirements of DIN 1988, on the one hand, and to avoid the later digging up of traffic areas, on the other hand. Thus, drilling and commissioning of the service line can be done immediately before water is needed. Milling saddle Hawle milling saddles for PE/PVC pipes are provided with an integral drilling tool (milling cutter/punch) and an operational shut-off device. Therefore, no additional drilling device is required. The Hawle milling saddle is characterized by a robust O-ring shut-off mechanism and the two-stage feed mechanism (high feed rate up to milling, low feed rate during milling). Pipe saddles with auxiliary shut-off device Pipe saddles with auxiliary shut-off device are used wherever a line has to be shut-off temporarily, e.g. after drilling, but where no permanent shut-off valve is required. Shutting off is effected by means of a shut-off blade of stainless steel. After pulling the shut-off blade the seat of the saddle blade is sealed by fixing a gasket cover plate.
14 Pipe drilling saddles Pipe drilling saddles Hawlinger Pipe drilling saddles type Hawlinger consist of the connecting element for the respective main pipe (e.g. universal strap system for DCI, steel, and AC pipes, or HAKU system for PE, PVC pipes), the shut-off mechanism consisting of a shut-off blade of hard-rolled stainless steel, and the Hawlinger bonnet with the three main versions: One upper outlet ( A ) One upper outlet and one outlet 90 to pipe direction ( U ) One upper outlet and one outlet in pipe direction ( S ) The outlets are either designed as ZAK sockets or provided with female thread. For more information on the ZAK system please refer to Section 2 Technical features: Reliable shut-off function due to crank driven saddle blade with fixed stops Easy and quick installation due to flexible strap or saddle halves No pinning of spindle due to round thread for connection of extension spindle Many coupling and outlet variants Long service life due to Hawle epoxy powder coating and robust saddle blade technology Spindle O-rings fully embedded in corrosion resistant material Back seal to relieve double spindle sealing Completely protected body Allen screws (sealed with stearin)
15 Pipe drilling saddles Technical data: Body: GJS 400 Corrosion protection: Hawle epoxy powder coating Shut-off blade: stainless steel Spindle: stainless steel Medium: potable water, gas Closing procedure: clockwise, 180 max. operating pressure: water: 16 bar, gas: 5 or 10 bar (depending on version) Outlets types: ZAK, thread Automatic drainage When used for drinking water applications, all pipe drilling saddles type Hawlinger are available with an automatic drainage mechanism (type E ), which can be used, for example, if the complete pipe section that was shut off shall be drained after closing the valve (e.g. valve downstream of air valves, holiday homes, etc.). Please note that there must be a sufficiently rated drainage element in the area of the drain hole. drain bore profile gasket of drain bore operating key wedged in drain duct Open position (shut-off blade outside of flow) Closed position with open drainage
16 Pipe drilling saddles Milling saddle For plastic pipes (PE/PVC), so-called milling saddles are available. Other than the Hawlinger system, where drilling is done using a drilling device, these milling saddles have the milling cutter already integrated. Technical features: Two-stage feed mechanism Connection to the main pipe possible either via HAKU system, HA-WELD electrofusion saddles, or with PE-X end for welding into electrofusion saddles (e.g. +GF+ Typ ELGEF Plus) Technical Data: Body: Corrosion protection: Milling cutter: Max. drilling diameter: GJS 400 / red brass Hawle epoxy powder coating brass 25 mm and/or 35 mm Outside diameter: PE, SDR 11: d 63 to d 225 PE, SDR 17: d 63 to d 315 PVC, PN 10: d 63 ro d 280 Medium: potable water Max. operating pressure: 16 bar Upper outlet: ZAK 46-socket, female thread 1 1/2 or PE-fusion ends d 40 / d 50
17 Pipe drilling saddles Valve saddle Technical features: Valve and saddle in one saves one connection No loss of pipe cover depth due to lateral drilling Technical Data: Body: GJS 400 Corrosion protection: Hawle epoxy powder coating Medium: potable water, gas Max. operating pressure: water: 16 bar, gas: 5 bar Outlet types: ZAK 46 socket, female thread, male thread
18 Pipe drilling saddles Pipe saddles with auxiliary shut-off device Technical features: Pipe saddle and auxiliary shut-off device in one component Technical data: Body: GJS 400 Corrosion protection: Hawle epoxy powder coating Medium: potable water max. operating pressure: 16 bar Outlet types: ZAK socket, female thread, flange
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