USER MANUAL - Wa
Contents
1. between sealing surfaces 2 Repair the sealing surfaces Operation failure 1 Packing too tight 1 Proper loose gland flange nuts Leakage 1 Bonnet Bolts loose 1 Proper tighten bonnet nuts between 2 Bonnet gasket failure 2 Replace bonnet gasket Body and 1 Static head 1 Carefully operation to bonnet broken 2 Fatigue prevent suddenly and leaked stopping pumping and rapidly shutting 2 Replace valve that WA VALVE USER MANUAL CHECK VALVE 4 4 m Quality Assurance and Service 1 Warranty Period is 12 months from the delivery date 2 Service Manufacture will follow up the quality of the valve provided and offer service in accordance with contract specified m If any questions please feel free to contact our sales representatives or customer service at following methods Telephone Fax Email2. WA VALVE USER MANUAL CHECK VALVE 1 4 Before Installation Valves stay in the open condition during the transportation For incoming QC it must be checked 1 Packing condition is there any damaged during the transportation 2 The bolts of cap and yoke to make sure the bolt does not loose tightness when it arrived When the valve is not put into immediate service it is required that the valve be stored in a heated building that is fire resistant weather tight and well ventilated Storage area shall be situated and constructed so that it will not be subject to flooding and any corrosive chemicals present Recommends that all valve actuator be cycled approximately every 60 days or as required by the manufacturer of the actuation system Any spare parts for the valve shall be stored in the original packaging and under the same conditions as the valve will stored For storage greater than 4 months the storage container should be inspected every four 4 months to ensure it is in good condition and any additional protective coverings or materials are in working order Ensure all parts are plugged and bare metal is covered with a suitable rust inhibitor Installation and Operation Cleaning Even the valves was transported under a clean environment operator must check is there any foreign objects inside the bore If yes clean it before installation Operator clean the valves by water compression air or steam automation va
3. intenance shall also be inconvenience 5 When valve are installed in pipeline side by side enough space shall be considerate for operation maintenance and dismantle The clearance of hand wheels shall not less than 100mm in case of narrow clearance valves shall be installed interleaving 6 Support shall be set for valve with great open torque lower strength and fragile and heavy weight for bearing the valve The lesser mount of this kind valve the better The valve shall be set as near as the general pipeline Please see the drawings below for the order of bolts installation WA VALVE USER MANUAL CHECK VALVE 3 4 Operation Maintenance Dust grease and medium residual trend to accumulate at the surface of body stem the trapezoid thread of stem nut the guide of yoke and gears etc wear and erode the valve and shall be cleaned frequently After put into use valve shall be checked and maintenance periodically especially for the situation of sealing surfaces and worn the age of packing and the corrosion of body In case of such situation valve shall be repaired or replaced Upon reparation valve shall be listed for reference Potential failures and trouble shooting Troubles and countermeasures FAILURE CAUSE COUNTERMEASURES Leakage of packing 1 Gland flange nuts loose 1 Equally tighten eyebolt nuts 2 Packing aged or failure 2 Replace packing Leakage 1 Dirties between 1 Clean sealing surface
4. lve shall be cleaned only with water or steam the compression air is not allowed For cleaning operation first step is put the valve bore perpendicular to the ground and clean ensure all the dusts can be removed from the bore The second step is checking and clean all the connecting pipe bore and connection area No flush rust and foreign bodies allow to avoid the blocking and leakage WA VALVE USER MANUAL CHECK VALVE 2 4 Valve Installation 1 Carefully check the sensibility of actuator to prevent block before installation 2 Valve is recommended to be installed at location 1 2m from the ground for convenient of operation where the center of valve and hand wheel is over 1 8m from the ground a platform shall be built for the frequently operated valve For pipeline with numbers of valves valves shall be installed on the platform as likely as possible for convenient of operation 3 For single valve installed at location over 1 8m and less operated apparatus may be used such as chain wheel extension bar move platform and move ladder etc Where valve is installed underground extension bar or ground well shall be set For safety reason the ground well shall be covered 4 For valve installed on horizontal pipeline the stem is suitable at uprightness position or the downward stem shall be inconvenience for operation and maintenance as well the valve is liable to corrosion If the ground valve slant installed operation and ma
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