Continental Disc Corporation GROTH CORPORATION 1660A Series Installation, Operation And Maintenance Manual Download Page 14

Page 14 of 16 

ITEM 

DESCRIPTION

Material 

Spare 

Parts

Alum 

CS

SS

46 

Washer 

FEP 

47 

Hex Jam Nut 

316 

 

48 

O-Ring 

Fluoropolymer 

49 

Washer, Flat 

316 

 

50 

Washer 

FEP 

51 

Pilot, Model 1401E 

SS 

SS 

316 

 

52 

Male  Connector 

316 

 

53 

Male  Connector 

316 

 

54 

Tubing, 3/8 OD (Sense Line) 

316 

 

55 

Tee, 3/8 Tubing 

316 

 

56 

Check Valve, Model 1900 

Alum 

316 

316 

 

57 

Male  Connector 

316 

 

58 

Gasket, Spacer 

Non Asbestos Fiber 

59 

Vent 

Alum 

 

60 

Cross, ½ NPT[F] 

316 

 

61 

Plug, ½

” Pipe 

316 

 

62 

Pilot, Model 1401EV 

SS 

SS 

316 

 

63 

Pilot, Model 1402A 

SS 

SS 

316 

 

64 

Cross, 3/8 Tubing 

316 

 

65 

Nipple, ½ NPT 

316 

 

Figure 10: Jackscrew Assembly 

66 

Elbow, Street, ½

” 

316 

 

67 

O-Ring 

Elastomer 

68 

Nipple, ¼ NPT 

316 

 

 

76 

Lifting Eye 

SS 

( )  

Recommended spare parts, included in soft goods kits. Elastomer is 

 

Buna-N, EPR, FKM, FFKM or other as specified by the purchaser. 

Note: Some components are not 
used on all models; refer to assembly 
and sub-assembly drawings 

Figure 11: Model 1661A with 1402A Pilot 

Pilot Operated Pressure Relief 

– Direct Acting Vacuum Relief 

63

52

54

57

67

Summary of Contents for GROTH CORPORATION 1660A Series

Page 1: ...IOM 1660A Rev D 12541 Ref ID 96561 2010 Groth Corporation Installation Operation and Maintenance Manual for Pilot Operated Pressure Vacuum Relief Valves Models 1660A 1661A 1662A ...

Page 2: ...ter the tank at a specified pressure or vacuum condition The volume rate of venting depends upon tank size volatility of contents pumping rate and temperature See API Standard 2000 for the procedures to determine venting requirements The pilot operated relief valve has two principal advantages over other types of relief valves 1 It is bubble tight to set pressure 2 It is fully open at less than 10...

Page 3: ...es according to valve size and materials of construction and the valves typically achieve full flow capacity at 2 Oz Sq In The nameplate shows the basic information that is listed on each relief valve See Fig 2 Figure 2 Nameplate Each application must be reviewed to ensure material compatibility of all metal and soft goods components with the service conditions The pallet assembly and wetted compo...

Page 4: ... per purchase order specifications The set pressure and range of adjustment are stamped on the pilot valve nameplate Do not attempt to readjust the set pressure beyond the limit specified on the nameplate The pilot sense line is either 3 8 OD SS tubing or 1 2 NPT PVDF pipe It must be open and unobstructed to ensure that the pilot senses actual tank pressure For applications where tank vapors may c...

Page 5: ...tested at the factory as part of our standard inspection procedures 4 Inspect the gasket make sure that the material is suitable for the service Gasket dimensions are listed in Table 2 Full gaskets must be used with flat face flanges Either full or ring gaskets may be used with raised face flanges Table 2 Inlet Outlet Flange Gasket Dimensions ANSI 150 I D Ring O D Full Face Gasket O D B C Holes Qt...

Page 6: ...o page 9 Film Seat Pallet Vapor leakage between the valve body and tank nozzle Visual audible or vapor detector Leakage between the flanges may be corrected by tightening the fasteners Follow instructions listed on page 5 Installation The gasket may have deteriorated due to the chemical environment replace if required The tank nozzle may be warped corroded or scratched This will require resurfacin...

Page 7: ...d be removed first Loosen the union connection at the pressure pickup and the tubing fitting at the pilot body It is not necessary to remove the pickup fitting from the body Remove the pilot valve 51 from the upper actuator housing 2 by disconnecting at the threaded pipe nipple 1 Inspect and service the pilot according to the appropriate Groth manual for either the 1401 or 1402 series pilots Unscr...

Page 8: ...SG12VV Pilot Valve for Model 1660A 1661A Soft Goods Type 1401E 1402A Buna N KS1401SGBP KS1402SGBP EPDM KS1401SGEP KS1402SGEP FFKM KS1401SGKP KS1402SGKP FKM KS1401SGVP KS1402SGVP 2 Model 1662A Soft Goods Type Film O Ring Buna N KS1662SG02TB KS1662SG02BB EPDM KS1662SG02TE KS1662SG02EE FFKM KS1662SG02TK KS1662SG02KK FKM KS1662SG02TV KS1662SG02VV 3 Model 1662A Soft Goods Type Film O Ring Buna N KS1662...

Page 9: ...damaged or cut at the washer O D Use care in handling the film at all stages of assembly Screw the jam nut 34 completely onto to the jackscrew 33 and thread the jack screw into the jackscrew bushing 35 until the tip extends slightly through the opposite end hex side Figure 4 Film Pallet Assembly Position the film sub assembly on the face of the pallet with the tip of the jackscrew 33 in the counte...

Page 10: ...surface of the insert may be lapped using a flat lapping block If the film pallet is used the sealing radius may be hand polished very carefully The radius must be uniform and not exceeding 030 ASSEMBLY Model 1660A This model has one support plate riveted 3 to the spindle cap Screw the jam nut 47 onto the spindle rod 13 and screw the rod into the spindle cap 22 until it is flush with the top surfa...

Page 11: ...the body studs until the pallet assembly is seated in the valve body Install the diaphragm 15 onto the studs Note If the Model 1402A pilot is used a spacer gasket 58 is installed between the lower actuator housing 14 and the diaphragm 15 The pilot will be connected to a hole on the actuator mounting surface of the valve body In this case the odd hole in the body gasket 20 lower actuator housing 14...

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: ...304 18 Fitting Pick Up 316 19 Body Alum CS 316 20 Gasket Actuator FEP Figure 4 Film Pallet Assembly 21 Nut Hex Jam 316 22 Cap Spindle Upper Alum 316 316 23 Washer Bearing 316 24 Swivel Ball 316 25 Cap Spindle Lower Alum 316 316 26 Swivel Socket 316 27 Seat Ring 316 28 Snap Ring SS 29 O Ring Elastomer 30 Retainer O Ring 316 31 O Ring Elastomer 32 Pallet O Ring Alum 316 316 33 Jack Screw 316 34 Nut ...

Page 14: ...Vent Alum 60 Cross NPT F 316 61 Plug Pipe 316 62 Pilot Model 1401EV SS SS 316 63 Pilot Model 1402A SS SS 316 64 Cross 3 8 Tubing 316 65 Nipple NPT 316 Figure 10 Jackscrew Assembly 66 Elbow Street 316 67 O Ring Elastomer 68 Nipple NPT 316 76 Lifting Eye SS Recommended spare parts included in soft goods kits Elastomer is Buna N EPR FKM FFKM or other as specified by the purchaser Note Some components...

Page 15: ...Page 15 of 16 53 62 54 55 ...

Page 16: ...FOR A PARTICULAR PURPOSE REGARDING PRODUCTS UNLESS SPECIFIED IN THE SALES CONTRACT THIS CONTRACT STATES THE ENTIRE OBLIGATION OF SELLER Seller makes no warranties either express or implied except as provided herein including without limitation thereof warranties as to marketability merchantability for a particular purpose or use or against infringement of any patent of products In no event shall S...

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