New Mexico State License Pipe Fitter Practice Test

These questions are part of the practice quiz. Start practicing

• What common problem can occur when different sized pipes meet using a reducing flange?
• Which of the following is a type of bonnet assembly?
• Are Type K, L, and M tubes sized based on the actual outside diameter measurement?
• What type of shirt pocket is recommended for welders?
• Which connection can be used with slip-on and threaded flanges, provided the pipe is appropriately drilled?
• What are the color codes for K, L, M, and DWV tubes?
• Cast iron flanges are available in which of the following pressure ratings?
• True or False: The correct bevel angle for preparing a pipe end usually incorporates a cut at 45 degrees.
• What is a common use of threaded pipe?
• True or False: While tacking, the alignment of the pipes is not crucial as long as they are joined.
• What is the end to center distance for an 8-inch long radius 45-degree elbow using an alternative method?
• What is the bending gain for 1/2 inch tube bent 90 degrees?
• When fitting up two pipes, what are two important considerations?
• Why is it important to place a clear lens in front of protection equipment?
• True or False: The usual pipe end bevel for fit up is 37-1/2 degrees.
• In pipe fitting, what is meant by 'seamless pipe'?
• For bolting a 12 inch, 600 class flange joint, what size and how many studs are required?
• What type of valve stem mechanism is characterized by a non-rising stem?
• Which two types of globe valves are recognized based on seat arrangements?
• Which type of valve is best suited for throttling applications?
• True or False: Two things that must be considered when tacking two pipe sections together are maintaining a gap and keeping the two pipes straight.
• What are the basic finishes for pipe ends?
• What types of valve end connections are generally recognized?
• What type of butterfly valve connection is most commonly found?
• What safety equipment is essential when handling metallic ring joints?
• What are the two general classifications of diaphragm valves?
• All flanges with a serrated or grooved finish will have which design?
• How are grooved pipe couplings held together?
• Which flange type is best suited for applications requiring frequent maintenance?
• Steel pipe sizes up to 12 inches have a larger OD than their nominal size; is this true?
• What is a crucial disadvantage of using gate valves for flow control?
• What is the thinnest wall thickness available for a 1 inch condenser tube?
• What are three basic types of flange face types for gaskets?
• What is the branch to center distance for a 2-inch malleable iron screwed tee?
• What is the primary issue associated with using a reducing flange?
• A flexible wedge gate valve is used where a solid wedge might jam due to temperature variations. True or False?
• What is the actual OD of an 8-inch steel pipe?
• What is the run length of a 45 degree offset if the travel is 40 inches?
• How many threads are recommended for both hand and wrench engagement to create a leak-proof joint for a 1-inch pipe?
• The end to center of a long radius return bend is how many times the NPS?
• Does an outside lever and weight type check valve allow for immediate closure?
• Y pattern globe valves can be used for services such as a boiler blow-off without flow restrictions. True or False?
• What is a unique method for removing a pipe that will not unscrew from a cast iron fitting?
• When using a bevel or a j-groove weld symbol, the plate to be prepared is indicated by a __________ arrow?
• What is essential for a check valve to function properly?
• A malleable iron coupling with 4 ribs indicates what?
• A class 6000 steel threaded coupling is equivalent to which steel pipe classification?
• Welding neck flanges are usually used for which type of plate flanges?
• Which three hazards should a welder protect themselves from by wearing a proper welding helmet?
• What is the run length of a 45-degree offset that has a travel of 40 inches?
• Which tube types are exclusively available in coils of soft copper?
• Are the travel lengths given in any of the formula methods the true lengths of the pipe to be cut?
• Which material requires extreme caution during cutting or handling due to health risks?
• Is Schedule 80 plastic pipe recommended for threading?
• In a 2x2x1 tee, what does the '1' refer to?
• Metal fume fever or zinc chills are most commonly caused from welding on which of the following?
• What is the main design feature of a plug valve?
• What is the main operational difference between a relief valve and a safety valve?
• What is used to soften the joining surfaces when solvent cementing plastic pipe?
• A weld test required the test plates to be in a horizontal position and the weld to be done flat; this is called the _______ position?
• Which characteristic is most critical when selecting tubing for pressurized applications?
• For a given offset system, an increase in the angle typically results in what change to the length of the run?
• What is the outside diameter of a 1 inch type K tube?
• How do you calculate the offset for a 30-degree system given a travel length?
• Which type of sealing surface is best for corrosive and high pressure/temperature flange joints?
• What is the primary function of a diaphragm valve?
• How is structural tubing typically sized?
• The composition of plastic metal pipe results in the ________ of plastic and the ________ of metal pipe?
• Acetylene is an unstable compound and should not be compressed _________ psi when in free state?
• The outer diameter (OD) of a flat ring gasket is equivalent to which measurement?
• What is a popular type of clothing for welders that sheds sparks well and is fairly inexpensive?
• True or False: Using a backing ring always enhances the efficiency of the piping system.
• Why is cast iron steel pipe commonly used in many commercial buildings?
• What is an essential feature of welder shirts?
• Can a composition disc globe valve be interchanged from one type of service to another simply by changing the disc?
• Which item is primarily worn to protect a welder's head and hair?
• Which of the following is a special application tube?
• How many general classes of malleable iron fittings are available?
• Is the statement "An 8 inch tube will have an outside diameter equal to an 8 inch pipe" true or false?
• When preparing a test coupon, the wire used to maintain the proper gap should be as thick as the________ opening required?
• Which type of tube bundle is ideal for applications that require frequent bends or turns?
• For any steel pipe size, how does the OD compare with the ID?
• What do the letters OWG stand for when identifying a valve?
• What is a characteristic of grooved pipe ends?
• True or False: Acetylene cylinders may be used in any position.
• What is the primary function of still tubing?
• What are two advantages of using a spectacle blind compared to a line blind?
• What type of maintenance is crucial when using welding equipment?
• The end to center of a 90-degree short radius elbow measures what size?
• What is the purpose of the placement link on a hand bender?
• What is the formula for finding the rolling offset with a tool of 12 inches and a rise of 18 inches?
• What type of valve would you use to allow flow in one direction while preventing it in the opposite direction?
• Do all unions require a gasket to ensure a tight seal?
• Which type of valve allows for precise flow control in piping systems?
• Which of these is a recommended practice when handling welding equipment?
• Angle body globe valves allow directional piping changes of what degree without additional fittings?
• What is the bolt angle of a flange that has 16 bolt holes?
• On a 60 degree horizontal offset system, how does the offset compare to the run?
• A metallic ring gasket is typically made from a material that is what compared to the flange material?
• How can you easily determine the outside diameter of a type K, L, or M tube?
• What is usually the cause of a leaking flange joint?
• What is the nominal pipe and fitting size recommended for use with an 18-inch pipe wrench?
• What term describes the condition of having sand in the eyes?
• What type of finish does commonly used steel pipe have to prevent corrosion in transit?
• True or False: A backing ring may not be advantageous because the ring becomes part of the system and could cause flow restrictions.
• When an icy-acetylene flame has no excess acetylene or oxygen, it is called?
• Which of the following is not a method used for steel pipe manufacturing?
• How is pipe classified?
• Which tool is needed to make a gasket using the trace and tap method?
• In what scenario would you prefer using copper brazed steel tubes?
• Why is proper installation crucial for a check valve?
• Why does friction wear occur on a split wedge or double disc valve?
• What is the end to center measurement of a reducing 90-degree long radius elbow?
• What is the usual suggested location for a horizontal valve stem?
• What precaution is necessary when handling asbestos gasket material?
• Which item should always be worn to protect the eyes when welding?
• A metallic ring joint must only be separated in which way?
• Which of the following is a basic type of valve?
• Why is bolting together ASME/ANSI flanges to API flanges not recommended?
• A 600 pound flange would have a face which is raised how many inches?
• How many welding hazards are the responsibility of the welder to protect him/herself?
• What is a significant benefit of using a flat ring gasket?
• What are the main advantages of a lap-joint flange?
• In a pipe system, the rise of 18 inches along with a tool of 12 inches provides what type of calculation?
• The end to center of a 45-degree long radius elbow is what measurement?
• What is the purpose of a by-pass valve?
• Can a butterfly valve be used effectively for flow regulation?
• What color is ABS Pipe rated at 230 psi?
• Which electrode can be used in all welding positions?
• Do plastic flanges comply with ANSI 150 lbs steel flange dimensions?
• What is the difference in lengths for a 45 degree equal spread offset given a run of 32 inches and a spread distance of 8 inches?
• Which type of flange is welded to the pipe in two locations?
• What is the main purpose of a gasket in piping systems?
• True or False: When the pre-heat holes are in-line with the cut, the tip is correct for bevel cutting.
• Which type of pipe is often referred to as 'black iron pipe'?
• Are aluminum and wooden plugs used to keep a plastic pipe round while threaded?
• Is it true that a mechanical tube is designed to carry fluids under pressure?
• To butt weld two pipes of equal thickness, the thicker pipe must be tapered to match the thinner pipe. The length of taper to offset thickness ratio is?
• What is the consequence of using cast iron flanges rated for incorrect pressures?
• Which shade # lens gives the most protection for welding: 8, 6, 4, or 10?
• How many general types of butterfly valves are there?
• What is another name for a lap-joint flange?
• True or False: Three things must be considered when tacking a flange to a pipe or fitting, including gap, spacing, and level of holes.
• Which of the following is NOT a typical type of valve?
• What is one benefit of using a lubricated plug valve compared to a non-lubricated plug?
• Can a vertical design check valve be used in an inverted position?
• The purpose of cast iron drainage fittings is primarily for which type of systems?
• What are the two basic categories for plastic pipe?
• What common issue can occur with solid wedge gate valves due to temperature changes?
• What is a common characteristic of a spiral wound gasket?
• In a two pipe 30 degree equal spread offset with a spread of 12 inches, the difference in length is calculated how?
• In what scenario should a straight way diaphragm valve be preferred?
• Welder pants should not have what feature to ensure safety?
• The end to center measurement of a 90-degree long radius elbow is typically what size?
• What is the purpose of using primer in pipe jointing?
• Is it true or false that copper and red brass pipe are considered tubing similar to steel pipe for sizes up to 12"?
• Which statement is true about protecting the filter lens?
• What is true about weld outlets?
• What is the maximum allowable working pressure for 1/4 inch nylon tube?
• What type of valve is commonly used in the food industry to avoid product contamination?
• Why are gate valves not advisable for use in partially open or closed systems?
• What type of valve is generally recommended for throttling applications?
• Which methods can PVC pipe be joined?
• What are the two principal functions of valves?
• Is a butterfly valve similar to a gate valve in terms of regulation capability?
• Why are conventional disc globe valves preferred for situations with product flow that leaves deposits?
• What is the purpose of having a high-low pipe fitting?
• What is the primary characteristic that differentiates pressure tubing from other types?
• What is the maximum thickness generally supplied for coiled aluminum tubing?
• What does the term "DOL" generally represent in the context of two pipe equal spread offsets?
• What is replacing cast iron pressure pipe in modern-day construction for gas and water?
• What is a critical factor to check when measuring the gap between two pipes?
• Is it true that Argon gas, being lighter than air, does not cause respiratory problems in confined spaces?
• What is the BWG gauge tube wall thickness closest to 1/8 inch?
• The oxygen cylinder valve should be ______ open when in use?
• The welding process that uses a non-consumable electrode and a shielding gas is referred to as?
• For a 30 degree offset system with a travel length of 20 inches, what are its run and offset?
• Which of the following is NOT a type of port used in valves?
• What is the purpose of by-pass valves when used with larger valves?
• The main purpose of a relief valve is to do what?
• What is the composition of plastic metal pipe?
• What is a characteristic of a socket weld fitting?
• In a 2x1x2x1 cross, which run end will measure 2?
• How must the gap be maintained when tacking pipes together?
• Which type of diaphragm valve is most suitable for products containing solids or viscose fluids?
• What feature of a pinch valve makes it comparable to a diaphragm valve?
• Which of the following is NOT a hazard that a welder is protected from by wearing a helmet?
• Which material is typically recommended for welder shirts to minimize hazards?
• What is the typical use for silicon iron pipe?
• In what position must the stem of an operational split wedge gate valve be?
• When using the GTAW welding process with AC current, the tungsten end will be?
• Which type of valve is primarily used for throttling?
• What are the three main categories of tubing?
• What type of welding pants should be avoided for safety?
• Is a screwed flange found on an 8-inch, 900lb joint?