Datasheet ERHARD ERK tilting-disc check valve

ERHARD ERK tilting-disc check valve The universal check valve with double excentric valve disc A key component of the ERHARD ERK tilting-disc check valve is the valve disc which has a freely oscillating, flow-facilitating design with double eccentricity support. The shafts are in maintenance-free, self-lubricating friction bearings, and the shaft has maintenance-free seals. A rolled up, solid body seat ring made of stainless steel, and a disc seat ring which is additionally provided with an elastic fine seal, provide perfect sealing The ERHARD ERK check valve is designed for medium water, from...

Short body EN 558-1, basic line 14 Shipment Nominal sizes Pressure ratings Working temperatures - with flanges to EN - with flanges to international standards Materials Body and valve disc - Cast iron with spheroidal graphite GGG - Cast iron with lamellar graphit GG Elastomer Perbunan, EPDM oder Viton Protection against corrosion - EKB fusion bonded epoxy - Coating according to customers’ request ERHARD ERK tilting-disc check valve

Tilting-disc check valve – single components 16 17 Standard design with weight-loaded lever ductile cast iron Seat ring Valve disc Disc facing ring stainless steel stainless steel stainless steel stainless steel stainless steel Locking plate stainless steel Hexagon bolt stainless steel Flanged bearing ductile cast iron Fitting ring stainless steel Hexagon bolt stainless steel ductile cast iron DN 150: austenitic CrNi steel ERHARD ERK tilting-disc check valve

Protective guard to be mounted by user For DN 700 and larger, the valve disc protrudes – during its travel – from the body on the inlet side.

Suggestion for installation of check valve and butterfly valve Attention! Installation must be effected in such a way that the weight-loaded lever of the check valve is on the left seen in flow direction and that the gearbox of the butterfly valve is on the right, seen in flow direction. Thus, there will be no collision between weight-loaded lever and gearbox. Required back pressure to absolute tightness: 0,3 - 0,4 bar We recommend a minimum distance between pump and the check valve of 3x DN. Check valve Intermediate pipe Butterfly valve

Functional and control diagram of a hydraulic damping device ERHARD hydraulic damping devices are double-acting, i.e., damping is effective in opening direction and in closing direction. Appropriate kinematics and shape of the damping cylinder brings about the damping zones shown in the below diagram. The hydraulic damping device is of very compact design and well approved in terms of ease of maintenance, adjustability, and functionality thanks to its being installed externally. If the standard types are equipped with hydraulic damping cylinder, due to shaft dimensioning and material, the admissible...

Lever arrangement Flow direction Counterweight with damping device Counterweight with damping device Counterweight with damping device on the left, seen in flow direction on the right, seen in flow direction Counterweight with damping device Counterweight with damping device Counterweight with damping on the left, seen in flow direction on the right, seen in flow direction device on both sides Counterweight with damping device Counterweight with damping device Counterweight with damping on the left, seen in flow direction on the right, seen in flow direction device on both sides For vertical...

Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS]

Pressure loss Dr [mmWS] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Degree of opening j [% (100 % = open)] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS]

Degree of opening j [% (100 % = open)] Pressure loss Dr [mmWS] ERHARD ERK tilting-disc check valve

TALIS is the undisputed Number One for water transport and water flow control. TALIS has the best solutions available in the fields of water and energy management as well as for industrial and communal applications. We have numerous products for comprehensive solutions for the whole water cycle – from hydrants, butterfly valves and knife gate valves through to needle valves. Our experience, innovative technology, global expertise and individual consultation processes form the basis for developing long-term solutions for the efficient treatment of the vitally important resource “water”. ERHARD...