1511 Series - Maintenance Manual

V. Warranty InformationWarranty Statement - Dresser warrants that its productsand work will meet all applicable specifications and otherspecific product and work requirements (including thoseof performance), if any, and will be free from defects inmaterial and workmanship. Refer to Dresser’s StandardTerms of Sale, or specific contract for complete details onwarranty and limitation of remedy and liability.Defective and nonconforming items must be held forDresser’s inspection and returned to the original F.O.B.point upon request.Incorrect Selection or Misapplication of Products- Dresser Consolidated ® cannot be responsible forcustomer’s incorrect selection or misapplication ofour products.Unauthorized Repair Work - Dresser Consolidated ®has not authorized any non-Dresser affiliated repaircompanies, contractors or individuals to perform warrantyrepair service on new products or field repaired productsof its manufacture. Therefore, customers contractingsuch repair services from unauthorized sources must doso at their own risk.Unauthorized Removal of Seals - All new valves andvalves repaired in the field by Dresser Field Service aresealed to assure the customer of our guarantee againstdefective workmanship. Unauthorized removal and/orbreakage of this seal will negate our warranty.VI. IntroductionThe “safety valve” is the final safeguard between acontrolled boiler and a catastrophic explosion. In an overpressuresituation, the pressure in the valve inlet increasesuntil the force on the disc exerted by the system pressureequals the force exerted by the spring. This causes thesafety valve to pop, or lift, relieving the excess steam untilthe system pressure is reduced to the desired level.The Consolidated Safety Valve has been a leader inthe industry since 1879, thus offering over a centuryof experience in design, engineering and productmanufacture. Dresser’s history of dependable and reliablevalve service assures that today’s products and designsare consistent with industry’s current requirements.Rigid manufacturing standards controlled by an ASMEapproved Quality Control Program insure that each valvewill be manufactured in accordance with establisheddesign criteria and tested for functional performance.This quality controlled manufacturing and test programassures that each valve manufactured will provide longand reliable service.8 | Dresser Consolidated ®