Groth 1400 Bedienungsanleitung PDF herunterladen (Seite 13)

TABLE 6: LUBRICANTS – RECOMMENDATIONS

FASTENER LOCATION LUBRICANT – SEALANT MANUF. & PART NO.

Actuator Fastener Dry Moly Film Crown #6080 or equal

Stem Guide MS

Lubricant Fel-Pro [Loctite] #51048 or equal

Stem/Swivel Fitting Silicone Lubricant Dow Corning #33 or equal

Note: Lubricant selection must consider process environment.

TABLE 7: TROUBLESHOOTING GUIDE

PROBLEM INSPECTION SUGGESTED CORRECTIVE ACTION

Pilot Valve

Leak

Visual, audible or

vapor detector

Consult troubleshooting guide in specific pilot valve manual

Main Valve

Actuator Leak

Visual, audible or

vapor detector

Leakage at the actuator flange may be corrected by tightening

the fasteners adjacent to the leak path. If this is not successful,

it will be necessary to install a new gasket. Refer to

instructions on page 6.

Vapor leakage

from the valve

body outlet.

Visual, audible or

vapor detector

Leakage can occur at the valve body seat - FEP film interface;

other leak paths are the swivel seal or a torn actuator

diaphragm. After removing the upper actuator housing, lift the

pallet assembly off the seat and inspect for damage to the film

or foreign debris buildup on the seat or film. Clean or replace

the pallet diaphragm as required. Refer to page 6.

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 mounting instructions listed on page 4.

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 resurfacing of

the flange face; note that a flat faced flange is recommended to

avoid potential damage to an aluminum valve body.

TABLE 8: ABBREVIATIONS

ANSI American National Standards Institute NPT National Pipe Thread

API American Petroleum Institute POV Pilot Operated Valve

BOM Bill of Materials PSIG Pounds/Sq. Inch – Gauge

DPHGM Diaphragm PTFE Fluoropolymer

FEP Fluorocarbon Film (Fluoropolymer) SS Stainless Steel

MAWP Maximum Allowable Working Pressure WC Water Column

Moly – Disulfide

1 2 ... 8 9 10 11 12 13 14

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