Ames-fire-waterworks ATG-1 Backflow Preventer Test Kit Manuel d'utilisateur télécharger pdf (Page 3)

1. When using differential pressure gauge

A.CheckdifferentialacrossNo.1checkvalve

Reading Problem

2to3PSID LeakinNo.1orNo.2checkvalve

4to7PSIDandsteady Malfunctioningpressurereliefvalve

2to7PSIDfluctuating Inletpressurefluctuating

2. Without using differential pressure gauge.

A.ClosegatevalveNo.2

Result Problem

Ifdischargestops LeakinNo.2checkvalve

Ifdischargedoesnotstop GotoB

B.OpenNo.4testcocktoproductaflowgreater

thandifferentialreliefvalvedischarge

Result Problem

Ifdischargestops LeakinNo.1checkvalve

Ifdischargedoesnotstop Malfunctioningpressure

  reliefvalve

Problem Identification Procedures - For RPZ Assemblies

PROBLEM:Continuousorintermittentdischargefromreliefvalve.

1 2 3 4

Pas de commentaire

Ames-fire-waterworks ATG-1 Backflow Preventer Test Kit Manuel d'utilisateur Page 3