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Large Bore Excess Flow Valve 2010-11-18
I am trying to locate a manufacturer(s) of excess flow falves for hazardous liquid service. The valves we currently are using are 3" 300#RF flanged valves manufactured by Guardian.
Rising stem ball valve substitute 2010-11-18
Rising stem ball valves for some applications. These are hard to come by and only manufactured by a very, very limited number of companies.
Tolerance For Straddling Centerline 2010-11-18
We have a 3 piece ball valve 48" Class 300. Noticed that when bolted together the straddle of the centerline is about 1/2degree off.
Equalize Pressure for 18" Ball Valve 2010-11-17
18” Metaltite ball valve (full-bore, fail-close), from KTM, cannot be operated (cannot command to open), even though the equalize valve was already opened and the differential pressure across the val
Fire Safe Ball Valves 2010-11-17
"Fire Safe" ball valve, particularly in accordance with API 607. My understanding is that the construction of the valve seat has both a resilient component for better sealing,
Abrasive service 2010-11-17
Glycerine & fatty acids @ 180'C and requires to seal at full vacuum.The valve currently installed has a glass filled seat which is being damaged after 3 months service and will therefore start to pass
Need Pilot Scheme for Hyd. Cyl. actuated PR Ball Valve 2010-11-17
Subject: Pressure Reducing Ball Valve with Hydraulic Cylinder Actuator.Industry: Potable fresh water at 100 psig upstream to 40-50 psig downstream.
Pressure differential in ball valves 2010-11-17
Ball valve which suffered failure is connected to manifold end and severe erosion found on connecting/ball valve flanges.
