ERHARD Post Fire and Underground Hydrants

ERHARD Post Fire and Underground Hydrants 2 TOP PERFORMANCE FOR MAXIMUM SAFETY The main purpose of hydrants is the withdrawal of water for extinguishing fires. They are connected directly to the underground drinking water network. In addition, ERHARD hydrants fulfill so many requirements today that there is a wide spectrum of possible uses available for users, such as: • Drinking water supplies in emergencies • Pipeline flushing • Withdrawal of water for cleaning streets and sewers • Withdrawal of water for construction work • Field irrigation • Temporary water supplies during repair work • Bleeding...

ERHARD Post Fire and Underground Hydrants PROPERTIES AND ADVANTAGES AT A GLANCE No. 1 Maximum tightness Double cut-off with ball on enamelled seat and PUR shut-off cone Inner fittings are not ejected Safety interlock, stop and anti-rotation grip for the inner fittings Durability and opera ional t safety even after many years Top material quality and perfect corrosion protection e.g. through sleeve pipes enamelled on the inside, blind threaded holes, galvanised square caps or bonnets made of cast aluminium Hygiene and frost protection Safe water draining through draining valve and draining pipe...

ERHARD Post Fire and Underground Hydrants 4 INTELLIGENT SOLUTIONS FOR SAFETY AND DURABILITY ERHARD hydrants have numerous well-thought-out design features which guarantee users reliable operation and maximum safety. Cut-off provides maximum safety thanks to PUR cone and multi-chamber ball The shut-off cone in ERHARD hydrants [1] is connected to the valve insert pipe by a secure compression connection and thus reliably seals the enamelled seat of the bottom part of the post. The ERHARD hydrant polyurethane (PUR) is used for the shut-off cones [2] in place of the EPDM previously used. Polyurethane...

ERHARD Post Fire and Underground Hydrants Sophisticated safety interlock ERHARD post hydrants are equipped with a safety interlock [3] directly under the break system. This reliably prevents ejection of the inner set of fittings, should the working pressure be unforeseeably applied at the shut-off cone when the hydrant is dismantled. Service-friendly break system and rotation of the upper part of the post The break system [3] can easily be repaired in the event of damage (e.g. if the hydrant is damaged in an accident). The break ring safely protects all the internal drive parts from damage. The...

ERHARD Post Fire and Underground Hydrants 6 DUPLEX CORROSION PROTECTION: SYSTEMATIC RELIABILITY For the above-ground range of hydrants, ERHARD uses an innovative corrosion protection system, DUPLEX corrosion protection. This is made up of two components: • zinc spraying as a basic coat and • a topcoat on an EP/PUR basis as the second coat. Both coatings provide very corrosion protection when used alone. But the concurrence of the two techniques results in an additional synergetic effect which significantly extends the overall period of protection provided by the new DUPLEX corrosion protection...

ERHARD Post Fire and Underground Hydrants PERMANENTLY PROTECTED WITH ERHARD PRO-ENAMEL ERHARD Hydrants are also available in a fully enamelled version for a perfect protection against corrosion. The special properties of enamel were the reason, why the first pieces of jewellery were already enamelled around 3,500 years ago. And even today, enamel is still indispensable as an engineering material for industrial applications thanks to its special properties. After it has been fired at around 720 °C, enamel is a vitreous, high-strength material, which forms a durable and permanent bond with the...

ERHARD Post Fire and Underground Hydrants 8 ERHARD UNDERGROUND HYDRANTS ERHARD underground hydrant DN 80 – the underground hydrant with the durable PUR cone The innovative shut-off cone makes the ERHARD underground hydrant DN 80 with PUR cone (see page 4) particularly durable, since the PUR sheathing of the shut-off cone results in very high abrasion resistance and thus low wear. At the same time it is insensitive to dirt and has a very good tear propagation resistance and a high ageing resistance. It goes without saying that the ERHARD underground hydrant with PUR cone is also fitted with a...

ERHARD Post Fire and Underground Hydrants In addition the version with flange connection, there is also a version with spigot end DN 80 available which can be combined with the push-in socket system BLS (Buderus Lock System). N-pieces are available as accessories. ERHARD compact pit fire hydrant – the compact hydrant for installation in pits The ERHARD compact pit hydrant has been specially designed for use in inspection pits of the size 150 x 150 used in Baden-Württemberg. Its encapsulated spindle bearing which is without play guarantees a high degree of reliability and durability. The standard...

ERHARD Post Fire and Underground Hydrants 10 ERHARD POST FIRE HYDRANTS ERHARD post fire hydrant with cast post – the tried-and-trusted hydrant available in numerous versions For years now, the ERHARD post fire hydrant according to DIN EN 14384 has been a tried-and-trusted solution which has numerous high-quality design features: • The very latest sealing cone technology using PUR material • Double cut-off with multi-chamber ball for replacing the inner set of fittings or the lower part of the post under full operational pressure • Sophisticated safety interlock to prevent the dangerous ejection...

ERHARD Post Fire and Underground Hydrants The ERHARD CITY hydrants [1] have a long service life thanks to the stainless steel posts and the enamelling of the hydrant head [2] using the fibre enamel ERHARD Pro-Enamel. But the ERHARD post fire hydrant with cast post [3] also has excellent protection against the influences of the weather thanks to its DUPLEX coating. ERHARD CITY hydrant – the post fire hydrant with stainless steel post for a long service life Post fire hydrants are exposed to the weather day in, day out. Thanks to its stainless steel post and high-quality coating of the hydrant...