Groth 1401E Manual do Utilizador Página 1

IOM 1401E.1 REV. A 12541 PILOT VALVE IOM 1401E.1 MAY 2006 Groth Corporation 2006 ISO 9001 Installation, Operation and Maintenance Manual f

9 TOOLS: All service, adjustment and assembly on the pilot may be performed with the following common tools: 7/16", 1/2", 9/16",

10 The seat bushing [34] forms a metal to metal seal against the body. Make sure the sealing surfaces are smooth and the seat bushing torqued down

11 SETTING AND TESTING PROCEDURE SERIES 1401 PILOT VALVES TESTING PILOT VALVE ALONE NOTE: See pressure relief valve manual for procedure for set

12 BILL OF MATERIAL MODEL 1401E MATERIALS OF CONSTRUCTION ITEM QTY DESCRIPTION CARBON STEEL ALUMINUM STAINLESS STEEL 316 SS 1 1 CAP-ADJU

13 Fig. 14 - Model 1401E Pilot Valve - Exploded Assembly 4241342771921201740223226103911303815253156293725151614133328242318134792101236835

14 Fig. 15 - Model 1401E Pilot Valve - Cross Sectional Assembly 363738342829323031332726252423221110987654321STEM/SEAT41403912 13 14DETAILA212019181

15 The nameplate on the Groth Series 1401 Pilot Valve contains the model number, serial number, set pressure and set pressure range. The model numbe

1 TABLE OF CONTENTS GENERAL INFORMATION Pilot Valve Design and Function 2-3 SAFETY General Instructions 3-4 INSTALLATION Inspection and Inst

2 Figure 1: Tank Installation - Safety Equipment GAUGEEMERGENCY RELIEF VALVEGROTH MODEL 2400PRESSURE/VACUUMRELIEF VALVEGROTH MODEL 1420BLANKET GAS R

3 When the tank pressure reaches the set pressure of the pilot valve, force on the diaphragm overcomes the spring and vapors begin to flow to the atm

4 Pilot valve set pressure and blowdown are set at the factory per purchase specifications. The set pressure and range of adjustability are stamped

5 WARNING The recommended set pressure range is stamped on the nameplate. Never adjust a spring for a set pressure beyond its upper or lower design

6 WARNING Increase the orifice setting only enough to provide the desired modulating action. Excessive orifice size will prevent the pressure relie

7 At any time that the tank pressure is greater than the set pressure, the pilot valve will exhaust vapors from the tank and/or from the relief valve

8 TROUBLESHOOTING GUIDE PROBLEM INSPECTION SUGGESTED CORRECTIVE ACTION Vapor flowing at tank pressure below specified set point. Visual, audible