Data Sheets: Series 60 and 80 Direct Spring Operated …

1 ANDERSON GREENWOOD Direct Spring Operated PRESSURE RELIEF VALVESSERIES 60 AND 80 FEATURES Soft seat design provides repeatable bubble-tight performance before and after each relief cycle. Leak-tight performance near set pressure allows higher operating pressure, resulting in increased process throughput and system optimization. Easily replaceable soft seat and seals eliminate expensive, time-consuming lapping of metal components, resulting in lower long-term maintenance costs. Externally adjustable blowdown on Types 81/83 allows precise adjustment of reseat pressure without affecting set pressure adjustment.

2 Blowdown can be adjusted with valve in service, helping eliminate the need for costly removal and/or system shut down. Types 81/83 provide full lift at set pressure with no overpressure required. Minimizes possibility of freeze-up in applications involving a cryogenic or refrigerant and allows for applications to be set higher than Maximum Allowable Operating Pressure. Type 81P spindle design balanced against the effects of back pressure without the use of a bellows, reducing both initial purchase and associated long-term maintenance costs.

3 Meet ASME Section VIII and Section XIII (UV Designator) requirements, providing the user with third party verification of valve capacity and performance. Comply with the EC Pressure Equipment Directive 2014/68/EU. 2018 Emerson. All Rights 22/03 Premium performance Direct Spring Operated pressure relief valves that use special internals and soft seats to provide optimum, accurate performanceGENERAL APPLICATIONS pecific valve types are available for gas, vapor, liquid; gas or liquid thermal relief, cryogenic and chemically active applications.

4 TECHNICAL DATAS izes: x to 2 x 3 (DN 15 to 50)Orifices: to in2 ( to cm2)Connections: Threaded NPT, flangedTemperature range: -423 F to + 550 F (-253 C to + 288 C)Set pressures: 20 to 10,000 psig ( to barg)Code: ASME Section VIII and XIII (UV Designator) Series 80 Series 602 ANDERSON GREENWOOD Direct Spring Operated PRESSURE RELIEF VALVESSERIES 60 AND 80 CONTENTSF eatures and benefits ..1 Selection guide ..2 Types 81, 83 ..3 - 5 Type 81P ..6 - 7 Types 63B ..8 SizingHow to size a valve ..9 Sizing formulas.

5 10 - 13 Physical properties ..14 - 17 Conversion tables ..18 - 19 OrderingHow to finalize your selection ..20 Pressure and temperature - 23 Dimensions and weights ..24 - 58 Materials of construction ..59 - 63 Capacities ..64 - 67 Accessories and options ..68 Additional information ..69 Model number selection table ..70 HOW TO SELECT A VALVET hree steps make it easy to select, size and order the valve. Step 1: Preliminary valve selection: helps you determine the type of valve that best suits your 2: Sizing: provides the information you need to choose the correct valve orifice 3: Ordering.

6 Explains how to finalize valve selection and order the specific model number, after you have chosen the appropriate valve type and SELECTION GUIDEA pplications Relieving temperatureBalanced for back pressureValve typeGas/vaporGas/liquid thermal reliefSeat typeBody materialSet pressureLiquidBrassCSSST psig [barg] F [ C]81 XXPlasticXXX50 to 10000 [ to ]-423 F to 500 F [-253 C to 260 C]N81 PXXP lasticXXX50 to 6000 [ to ]-65 F to 400 F [-54 C to 205 C]Y83 XXO-ringXXX20 to 2000 [ to ]-65 F to 550 F [-54 C to 288 C]N63 BXXO-ringX37 to 531 [ to ]-65 F to 400 F [-54 C to 205 C]NNOTE1.

7 Minimum and maximum set pressures may not be available in all orifice sizes (see pages 21-23).MODELS OVERVIEWS eries 60 Direct Spring Operated safety valves suitable for medium set pressure gas, vapor and liquid or gas thermal relief applications. Brass construction offers an economical valve for carbon dioxide, natural gas and general gas or vapor services. Series 80 Direct Spring Operated safety valves suitable for premium performance. They use special internals and soft seats to provide optimum, accurate GREENWOOD Direct Spring Operated PRESSURE RELIEF VALVESSERIES 80 PRODUCT OVERVIEWT ypes 81, 83 safety valvesThe Type 81 Direct Spring Operated safety valve, with an inert plastic seat, is suitable for a wide range of products, pressures and temperatures involving gas, vapor and liquid or gas thermal relief applications.

8 It allows maintained tightness close to set pressure, opens fully at set pressure and provides a safe, external adjustment for short blowdown. The Type 81 valve is best suited for cryogenic, high set pressure and chemically active Type 83 Direct Spring Operated safety valve, with an elastomer seat, is ideal for gas processes that operate close to set pressure, for controlling valuable or polluting gas products that should not be lost to the atmosphere and for liquid or gas thermal relief applications. It allows maintained tightness close to set pressure, opens fully at set pressure and provides a safe, external adjustment for short blowdown.

9 The Type 83 is best suited for hard-to-hold gases and vapors and general gas or vapor huddling chamber of all three valve types has been optimized to provide full opening at set pressure. In addition, there is a unique, independent control of the blowdown via an external adjustment screw. The huddling chamber is powerful enough to generate a lifting force to lift the disk (spindle) fully against the Spring force, without any is assisted by the development of a controlled back pressure in the Spring chamber. This unique design uses this controlled back pressure in the Spring chamber to control precisely the magnitude of blowdown to a reasonable : x to 2 x 3 (DN 15 to 50)Orifices: to in2 ( to cm2)Connections: NPT, FlangedTemperature range: -423 F to + 550 F (-253 C to + 288 C)Set pressures: 20 to 10,000 psig ( to barg)Code.

10 ASME Section VIII and XIII (UV Designator)Valve type Set pressure range Operating pressure range81 and 83100 psig [ barg] and above 0% to 95% of set50 to 99 psig [ to barg]0% to 90% of setBelow 50 psig [ barg]0% to 85% of setSEAT TIGHTNESS PERFORMANCE SPECIFICATIONSAll pressure relief valves are checked for seat leakage per procedures outlined in API following operating pressures will allow for bubble-tight seat sealing GREENWOOD Direct Spring Operated PRESSURE RELIEF VALVESTYPES 81, 83 VALVE OPERATIONVALVE OPERATION1.