Continental Disc Corporation GROTH CORPORATION 1660A Series Installation, Operation And Maintenance Manual
Pilot operated pressure/vacuum relief valves
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- Page 1 Installation, Operation and Maintenance Manual for Pilot Operated Pressure/Vacuum Relief Valves Models 1660A, 1661A, 1662A IOM-1660A Rev. D 12541 Ref. ID: 96561 ©2010 Groth Corporation...
- Page 2 Page 2 of 16 TABLE OF CONTENTS Storage tanks are pressurized when liquid is pumped in, compressing the existing vapor or Description when increasing temperature causes Introduction increased evaporation expansion Safety Warnings existing vapor. Conversely, vacuum may be Inspection and Storage created when pumping out or due Installation...
- Page 3 Page 3 of 16 Figure 1: Tank Installation – Safety Equipment summarized in Table 1 below. Each type is available with either a standard O-Ring seat or the optional mechanically tensioned FEP film seat. The FEP film diaphragm provides a tight seal capable of meeting current Clean Air Act fugitive emission levels and is recommended for cryogenic applications.
- Page 4 Page 4 of 16 POV relief pressure and blowdown are set at proper setting and testing procedure in the the factory per purchase order specifications. appropriate pilot valve manual. The set pressure and range of adjustment are This manual intended provide stamped on the pilot valve nameplate.
- Page 5 Page 5 of 16 Lifting eyes are provided on the upper flanges should be flat within .020" and actuator for handling the valve. To avoid clean, free of scratches, corrosion and damage to the lower flange surface, set the tool marks. valve on a soft clean gasket material until it is Each valve is leak tested at the factory as ready to be installed.
- Page 6 Page 6 of 16 Table 3 Table 4 Bolt Torque - Flat Face Flange Bolt Torque - Raised Face Flange ANSI Number Stud Torque ANSI Number Stud Torque 150# Size Ft. Lb. 150# Size Ft. Lb. Drilling Bolts (Kg. m) Drilling Bolts (Kg.
- Page 7 Page 7 of 16 If a vapor leak is detected, it will likely be from removed first. Loosen the union connection at one of the following sources: the pressure pickup and the tubing fitting at 1. Pilot valve the pilot body. It is not necessary to remove 2.
- Page 8 Page 8 of 16 REPLACEMENT PARTS Table 5. Spare parts kits 2” Model 1660A& 1661A 2” Model 1662A Soft Goods/Type Film O-Ring Soft Goods/Type Film O-Ring Buna-N KS1660SG02TB KS1660SG02BB Buna-N KS1662SG02TB KS1662SG02BB EPDM KS1660SG02TE KS1660SG02EE EPDM KS1662SG02TE KS1662SG02EE FFKM KS1660SG02TK KS1660SG02KK FFKM KS1662SG02TK...
- Page 9 Page 9 of 16 FILM SEAT PALLET Screw the jam nut [34] completely onto to the jackscrew [33] and thread the jack screw into Turn the pallet assembly upside down to the jackscrew bushing [35] until the tip disassemble. If placing in a vise, clamp extends slightly through the opposite end (hex against the flats on the swivel ball [24].
- Page 10 Page 10 of 16 recheck the film seat gap. Remove this sub- assembly and store on a clean surface. O-RING SEAT PALLET Remove the retaining ring [28], the retainer plate [30] and two O-Rings [29 & 31]. Inspect and clean the O-Ring groove and the bore in the pallet.
- Page 11 Page 11 of 16 Replace the bushing(s) [10] and/or O-Ring WARNING seal [67] in the spindle guide sub-assembly. Failure to properly align gaskets and the Insert the spindle tube and make sure that it lower housing on valves equipped with the moves freely.
- Page 12 Page 12 of 16 DRAWINGS AND BILL OF MATERIALS Figure 9: Model 1661A with 1401E Pilot Pilot Operated Pressure Relief – Direct Acting Vacuum Relief...
- Page 13 Page 13 of 16 Table 7: Bill of Materials ITEM DESCRIPTION Material Spare Parts Alum Nipple, Pipe, 1/2" NPT Housing, Upper Actuator Alum Rivet, Plate Plate, Support, Pressure Alum Plate, Support, Vacuum Alum Stud Nut, Hex Washer, Flat Washer, Lock Plug, Pipe Bearing, Spindle Fluoropolymer...
- Page 14 Page 14 of 16 ITEM DESCRIPTION Material Spare Parts Alum Washer Hex Jam Nut O-Ring Fluoropolymer Washer, Flat Washer Pilot, Model 1401E Male Connector Male Connector Tubing, 3/8 OD (Sense Line) Tee, 3/8 Tubing Check Valve, Model 1900 Alum Male Connector Gasket, Spacer Non Asbestos Fiber Vent...
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- Page 16 Page 16 of 16 MODEL NUMBER The nameplate on the Groth Series 1660A Pilot Operated Valve contains the model number, serial number, set pressure and flow capacity. The model number contains additional information about materials of construction and options. The following chart will assist in relating the model number to the specifications of your pilot operated valve: PRODUCT LIMITED WARRANTY A.
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