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check valves

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Published: 01 January 1989
Fig. 18 Setup for lapping seats of swing check valves More
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005758
EISBN: 978-1-62708-171-9
.... acetylene carbon dioxide check valves compressed gas cylinders hoses hydrogen oxygen pressure-relief valves propane propylene safety guidelines safety precautions thermal spraying Scope The objective of this article is to provide members of the thermal spray community with practical...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... to 82 °C (140 to 180 °F). The pilot light is always on and the gas valve operates the main burner in full-on/full-off modes. The controller is operated by the temperature measuring and comparing device. The check valve in the water inlet pipe prevents reverse flow due to overpressure in the hot water...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005850
EISBN: 978-1-62708-167-2
... heater for proper function. This is very important, because the heater prevents the sump from freezing during winter operation. Check operation of the sump float valve to assure that it allows addition of make-up water, shutting down the make-up water when the sump fill level is correct. Fig...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005292
EISBN: 978-1-62708-187-0
..., part extraction, die lubrication, insert loading, and die close. Some manual aspects of the operations, together with automation options, are discussed. The article describes finishing steps, such as finish trimming, detailed deflashing, shot blast cleaning, and quality checks. Automation...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001487
EISBN: 978-1-62708-173-3
..., a hot work permit system should be used. The purpose of the hot work permit system is to alert area supervisors to an extraordinary danger of fire that will exist at a particular time. The permit system should include a check list of safety precautions that includes an inspection for fire extinguishers...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003014
EISBN: 978-1-62708-200-6
..., generally of constant, shallow-flight depth, provides the final shear heating and mixing of the melt. After the melt passes through the metering section and a check valve at the end of the screw, it joins the melt pool in front of the screw. As the volume of melt in front of the screw increases, it forces...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005926
EISBN: 978-1-62708-166-5
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005852
EISBN: 978-1-62708-167-2
... the characteristics of the external elements of the system such as power supplies, valves, motion controllers, pumps, and so forth. Controls requirements can range in complexity from a small lift rotate machine with 5 kW or less of power and a single motion that can be controlled with a simple small programmable...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005928
EISBN: 978-1-62708-166-5
... be undetectable in atmosphere furnaces. This method has been used when a minimum number of people were in the immediate area of the furnace being tested. The area around the furnace to be checked must be well ventilated to ensure adequate smoke removal when the furnace is reopened following the test...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005348
EISBN: 978-1-62708-187-0
... ceramic shell; constitutional supercooling FRM ber-reinforced metals A area CSP constitutional supercooling parameter ft foot A angstrom CST constitutional solution treatment g gram; gas ac alternating current CV check valve casting g acceleration due to gravity AC air cool CVD chemical vapor deposition...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001228
EISBN: 978-1-62708-170-2
... flow of abrasive (through a valve not shown) is fed by gravity into an abrasive feed spout from which it flows into a rotating vaned impeller. The impeller rotates at the same speed as the bladed wheel, and the number of vanes is equal to the number of wheel blades. The impeller rotates in a stationary...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005635
EISBN: 978-1-62708-174-0
... that prevents the switch, valve, or other mechanism from being opened has been installed. When a piece of machinery is tagged out, a tag reading “DANGER” or “WARNING” along with a short message has been attached to the locking device. The message includes the name and contact nformation of the person who...
Book Chapter

By Pel Lynah
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002154
EISBN: 978-1-62708-188-7
.... It also eliminates the need for piston rings in fitting some plungers to cylinders. Other common uses of matched-piece lapping include fitting tapered valve components ( Fig. 1 ) and mating two or more gears in a set. Fig. 1 Tapered valve components finished by matched-piece lapping for precise fit...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005759
EISBN: 978-1-62708-171-9
... Steel Pipe for High-Temperature Service” A 182 “Specification for Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings and Valves, and Parts for High Temperatures” A 312 “Specifications for Seamless and Welded Austenitic Stainless Steel Pipes” E 84 “Surface Burning Characteristics...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005931
EISBN: 978-1-62708-166-5
... on a manually ignited, multiburner furnace that does not have flame-safety equipment with a programmed sequence of piloting the main burners. The system consists of specially designed gas valves that have inlet and outlet passages for checking a pressure medium such as air or gas. Air or gas—usually air...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005807
EISBN: 978-1-62708-165-8
... start Spindle with hub advances over flame head and starts to rotate. Spindle speed, 140 rpm Heating cycle Propane and oxygen solenoid valves open (oxygen flow delayed slightly). Mixture of propane and oxygen ignited at flame head by pilots. Check propane and oxygen gages for proper pressure...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001247
EISBN: 978-1-62708-170-2
... Table 4 Recommended maintenance schedule for plating and auxiliary equipment Daily Check anodes; replenish when necessary. Check all contacts, anode and cathode. Check solution levels. Check bath temperatures and controls. Check bath composition, if possible, using chemical...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005115
EISBN: 978-1-62708-186-3
... There are two basic methods of actuation for air feeds: internal and external. Internal actuation, by means of the mechanical valve built into the feed, is normally used on average-stroke presses for normal conditions. It is the simplest and the preferred method of actuation. If the stroke of the press...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005925
EISBN: 978-1-62708-166-5
... . As one general step to maintain overall accuracy (see also the section “ SAE-AMS 2750 Specification ” in this article), field test instruments and reference thermocouples also are used as a master reference to check the thermocouple/control system accuracy used in the production cycles. The check can...