ar 215 450 and 550 Series Pressure/Vacuum Relief …

1 Instruction Manual 450 and 550 Series March 2015. 450 and 550 Series Pressure/Vacuum Relief Valve (ATEX Approved). Table of Contents 1. 2. Principle of 4. 4. Adjustments .. 6. Relief Valve 6. Relief Valve 7. Parts 8. Parts 8 Figure 1. 450 Series Pressure/Vacuum Relief Valve - North America Only Pipe-Away ! Warning Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion, fire and/or chemical contamination causing property damage and personal injury or death. Enardo Pressure/Vacuum Relief valve must be installed, operated and maintained in accordance with Figure 2. 550 Series Pressure/Vacuum Relief Valve - federal, state and local codes, rules Vent-to-Atmosphere and regulations, and Emerson Process Management Regulator Technologies Tulsa, LLC (Emerson ) instructions. Call a qualified service person to service Introduction the unit. Installation, operation, and maintenance procedures performed Scope of the Manual by unqualified person may result in improper adjustment and unsafe This manual provides specifications, installation, operation.

2 Either condition may result in operation and maintenance instructions and parts equipment damage or personal injury. ordering information for the 450 and 550 Series Only a qualified person shall install or Pressure/Vacuum Relief valve (PVRV). service the 450 and 550 Series pressure /. vacuum Relief valve. D103811X012. 450 and 550 Series Specifications The Specifications section on this page provides specifications for the 450 and 550 Series Pressure/Vacuum Relief valve. Specification is stamped on the nameplate attached to the Relief valve. Refer to Product Identification and Marking section for the nameplate details. Available Construction vacuum Setting Range(1)(2)(3) (continued). See Figures 3 and 4. 550 Series : Available Sizes to in. 2 to 12 in. / 50 to 300 mm to in. pressure Setting Range(1)(2)(3) to mbar 450 Series : Maximum Pressure/Vacuum Setting(1). to in. See Table 1. to in. Housing Material to mbar Aluminum, Carbon steel or Stainless steel 550 Series : Certification to in.

3 EN 13463-1: 2001. to in. EN 13463-5: 2003. to mbar vacuum Setting Range(1)(2)(3). North America Only 450 Series : to in. to in. to mbar 1. The pressure limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded. 2. pressure or vacuum setting has an increment of in., in. or mbar. 3. pressure and vacuum settings vary by size. Refer to Table 1 for details. 450 x Inlet Outlet Housing Pallet Pallet pressure vacuum Options Connection Connection Material Material Seal Settings Settings Size Size Material 2 to 12 in. 3 to 14 in. 1 = Aluminum 2 = 316 1 = FEP Teflon z = in. O = No Options 4 = Stainless Stainless 2 = Buna-N n = in. A = Special Coating steel steel 3 = Viton mb = mbar B = Weights 5 = Carbon E = Optional Gasket steel to in. Material ( in. increments) G=S team Jacket or to in. Trace ( in. increments) J = Seat Material to mbar ( mbar increments). Figure 3. 450 Series Pressure/Vacuum Relief Valve Available Constructions and Model Numbering System Teflon and Viton are marks owned by E.

4 I. du Pont de Nemours and Company. 2. 450 and 550 Series 550 . Inlet Housing Pallet Pallet pressure vacuum Options Connection Material Material Seal Settings Settings Size Material 2 to 12 in. 1 = Aluminum 2 = 316 1 = FEP Teflon z = in. O = No Options 4 = Stainless Stainless 2 = Buna-N n = in. A = Special Coating steel steel 3 = Viton mb = mbar B = Weights 5 = Carbon E=O ptional Gasket steel to in. Material ( in. increments) G=S team Jacket or to in. Trace ( in. increments) J = Seat Material to mbar ( mbar increments). Figure 4. 550 Series Pressure/Vacuum Relief Valve Available Constructions and Model Numbering System Outer Housing of Stainless Steel, Outer Housing of Uncoated Aluminum North America Only Carbon Steel or Coated Aluminum Figure 5. Hazardous Locations Product Description Nameplate The 450 and 550 Series Pressure/Vacuum Relief A nameplate is attached to the valve and contains the valves provide protection against positive or vacuum following information: overpressure and prevent air intake and evaporative losses of product while helping to contain odorous and Model Number - Ex.

5 VALVE, potentially explosive vapors. The 450 Series is used 450- 8X10-121. for routine service in pipe-away applications while the Conn. Flange Size and Rating - Ex. 4 150#. 550 Series is used for vent-to-atmosphere application. Serial Number Tag Number (Optional). Features Notified Body Number - Ex. 0575. Stainless steel pallet with FEP Teflon Seal Cat. No. (Category Number) - Ex. II 1 G c T6 or II 2 G c T6. Replaceable Seats Year - Ex. 08. Ameron System 1 Coating Cert. No. (Certificate Number) - Ex. 19407. High Capacity Flow pressure Setting - Ex. Product Identification and Marking Flow Rate SCFH (Air) - Ex. 00000. Hazardous Locations vacuum Enardo Pressure/Vacuum Relief valves are available Setting - Ex. with outer housings of carbon steel, stainless steel or Flow Rate SCFH (Air) - Ex. 00000. aluminum, as indicated in Figure 5. Teflon and Viton are marks owned by E. I. du Pont de Nemours and Company. 3. 450 and 550 Series pressure FLOW vacuum FLOW.

6 Figure 6. 450/550 Series Pressure/Vacuum Relief Valve Operational Schematics North America Only Principle of Operation Installation The 450 and 550 Series Pressure/Vacuum Relief valves maintain a tight seal until system pressure or vacuum ! Warning exceeds the set pressure of the valve. Set pressure is determined by stacking a Series of weights onto the Ensure line is free of hazardous vapors valve pallet unless the pressure and vacuum set points before installing or servicing the valve. have been specified for the minimum settings. When overpressure occurs the weighted pallet lifts, breaking 1. Loosen fasteners on top of the valve and remove the seal between the seat and pallet. This allows the lid, hood or guide. vapors to pass through the valve orifice and relieve 2. Remove valve pallets from the unit. Carefully pressure buildup. The valve reseals upon Relief and separate the protective cardboard coverings remains sealed. from the pallets to avoid damage on the pallet Relieving vapors near the set pressure in a continuous seal surface.

7 Manner may cause the pallet to flutter or oscillate 3. Reinsert uncovered valve pallets back into inside the valve chamber. This is common to products the unit. of this type. Operating the valve with flutter or 4. Remove any protective flange covers. oscillation may cause premature valve damage or wear over time. Enardo Pressure/Vacuum Relief valve 5. Reinstall pressure and/or vacuum pallet flow charts and sizing program results designate assemblies into their respective openings. Install the flutter zone to assist with correct valve sizing. the setting weights (if required) by engaging Contact your local Sales Office with any questions or the hole in the weight on the appropriate pallet additional assistance. assembly stem. 4. 450 and 550 Series Table 1. 450 and 550 Series Maximum Pressure/Vacuum Setting pressure SETTING vacuum SETTING. model In. in. In. in. 450-02 450-03 450-04 450-06 450-08 450-10 450-12 550-02 550-03 550-04 550-06 550-08 550-10 550-12 North America Only a.

8 The weights are marked with their 6. Replace the covers and/or hood. pressure equivalents and are shipped outside of the valve chamber. Verify Note that the appropriate weights are being Pallet should be centered inside unit. installed to provide the specified pressure Do not force the lid down over the pallet and/or vacuum setting. Refer to the stem. With correct installation, the lid nameplate data to verify the specified should slip easily over the stem and the factory settings. pallet should be free to move upwards, b. To adjust valve settings higher than with the pallet stem travelling into the minimum, use the weights to increase stem guide. the pressure setting. Weights are packed separately within the unit shipping 7. Replace wing nuts or nuts and tighten to secure package and are labelled pressure covers/hoods in position. and/or vacuum . If weights are shipped 8. Attach the valve to the appropriate mating with the unit, install the weights onto flange using appropriate flange gasket which is the pallets in the valve chamber in compatible with process conditions (customer which they are labelled.)

9 Gently slide the provided). To ensure proper function, install the weights onto the pallet stem and down on valve to a level surface, not greater than 1 off top of the valve pallet. horizontal so the pallet moves vertically. valves Refer to Adjustments section for more that are tilted during usage may suffer premature details on using weights to adjust the damage or wear. pallet setting. 5. 450 and 550 Series Adjustments Relief Valve Maintenance The 450 and 550 Series Pressure/Vacuum Relief valves have wide range of pressure and vacuum settings in ! Warning units of in. or in. Standard Enardo valve pallets installed alone has minimum settings of 1/2 Make sure line is free of hazardous or 1 in. The pallets are calibrated by the seal vapors before installing or servicing support located on the bottom side of the pallet. The the valve. Use of non-sparking tools pallet's setting of 1/2 or 1 in. is etched is necessary if flammable vapors into the support.

10 When a valve requires a setting are present. higher than the 1/2 in. or 1 in. standard Observe all applicable safety pallet setting, use weights to increase the pallet's requirements. Only qualified and trained setting up to the required setting. personnel shall maintain the valve in Enardo weights also come in in. or in. The hazardous locations. individual setting of each weight is either etched or valves should be removed from the imprinted into the weight. Emerson offers several location having a potentially explosive different sizes of Pressure/Vacuum Relief valve. To atmosphere and taken to a safe location ensure that the right weight is placed on the right for repair and maintenance. pallet, take note that the weights and pallets that go together have the same outside diameter. Standard Limited maintenance of the Relief valve installed on Enardo weights allow the user to stack in increments the tank is possible, provided that all necessary safety of 1/2 in.