Journeyman Pipefitter Test 3

What cast iron item is not allowed on a high pressure boiler?

• feedwater valves

• nozzles or flanges

• water columns

• blowoff valves

• steam stop valves

When piping up a boiler gauge glass to a water tube boiler, the lowest visible part of the water gauge glass shall be at least ___ inches above the lowest permissible water level, as determined by the manufacturer.

• 3

• 1 1/2

• 2

• 2 1/2

• 2 3/4

The A.S.M.E high pressure boiler code limits the use of Nonferrous valves. What is the temperature limitation for 150psi class bronze threaded gate valve?

• 406 degress

• 200 degrees

• 250 degrees

• 300 degrees

• 400 degrees

All gage glass connections shall be not less than ___ inch pipe size

• 1

• 1/4

• 3/8

• 1/2

• 3/4

The A.S.M.E high pressure boiler code says that nonferrous pipe or tubes shall not be used in the boiler proper for any service where the temperature exceeds

___ degrees F.

• 406

• 250

• 300

• 350

• 400

Gage glass drains shall have an unrestricted drain opening of not less than ___ inch

• 3/4

• 1/8

• 1/4

• 3/8

• 1/2

When two or more high pressure boilers are connected to a common steam header, the connection from each boiler having a manhole opening shall be fitted with ___

• one stop valve with an ample free-flow drain valve

• two OS&Y stop valves with ample free-flow drain placed after the second valve

• two non return return valves, mounted back to back, with free-flow drain placed in the body of one valve

• two stop valves having an ample free-blow drain between them

For high pressure boilers having a water-heating surface of more than 100sq. ft of heating surface, the feed connection to the boiler shall not be smaller than ___ in. pipe

• 1 1/2

• 1/2

• 3/4

• 2

• 1 1/4

ASME B31.1 power piping code limits the size of slip-on flanges to be used for boiler external piping. This size limitation is NPS ___ inches on diameter.

• 5

• 2

• 2 1/2

• 3

• 3 1/2

A slow-opening valve requires ___ complete turns to be fully opened or closed.

• 7

• 3

• 4

• 5

• 6