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CHAPTER 9: Relief and Unloading Pressure Controls

Pressure-control valves Several types of pressure-control valves are found in fluid power circuits. Some keep the whole system from excess pressure while others only protect a portion of the system. Others allow flow to an isolated circuit after...
Jan. 18, 2007 | http://hydraulicspneumatics.com/other-technologies/chapter-9-relief-and-unloading-pressure-controls
Article

Ultrasonic transducer

Dynasonics DTTS transducer installs easily on 1/2 to 2 in. pipe and rigid tubing. If used with time transmitter, it replaces mechanical flow meters. There is no contact with internal liquid or moving parts. It is used with clean liquids or those...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/SystemInstrumen/Article/False/43987/TechZone-SystemInstrumen
Article

Polyalkylene glycol fluids

UCON water-glycol hydraulic fluids, UCON PowerPro, and UCON Trident are polyalkylene glycol based lubricants with additives to improve lubrication and provide resistance to liquid-and vapor-phase corrosion. They are available in a wide range of...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/HydraulicFluids/Article/False/43968/TechZone-HydraulicFluids
Article

Water-glycol fluids

Quintolubric 777-46 and 777-68 water-glycol hydraulic fluids contain less than 20% water. Quintolubric 777-46 is fire-resistant to HFC-E, biodegradable, and has a low water endanger class. Quintolubric 777-68 can be used in any hydraulic system...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/HydraulicFluids/Article/False/43969/TechZone-HydraulicFluids
Article

Anti-wear oils

Tellus Premium oils' anti-wear system offers reduced valve and actuator sticking and failure, high system efficiency, and prolonged pump and fluid life. They deliver thermal, hydrolytic, and oxidative stability to resist the formation of...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/HydraulicFluids/Article/False/43966/TechZone-HydraulicFluids
Article

Long-running fluid

Hydrex hydraulic fluid keeps equipment running long and efficiently. It lasts three times longer and provides two times better wear protection than similar fluids. It helps extend drain intervals for reduced change-outs, thereby reducing...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/HydraulicFluids/Article/False/43967/TechZone-HydraulicFluids
Article

Synthetic oil

Synthetic hydraulic oil protects systems from high-pressure, high-load, and heavy-duty operations. It remains fluid in cold temperatures. Zinc-based anti-wear additives and rust inhibitors provide protection in vane and gear pumps while meeting...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/HydraulicFluids/Article/False/43964/TechZone-HydraulicFluids
Article

Disc valve motors

High-pressure 30 disc valve motors offer high starting torque efficiency, low pressure drop, and smooth two-speed shifting. No-load pressure drop is lower than 200 psi at flows of 25 gpm. Two-piece balance ring provides high mechanical and...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/HydraulicPumpsM/Article/False/43975/TechZone-HydraulicPumpsM
Article

Stainless-steel rod ends

SSPM/SSPF stainless steel rod ends offer corrosion resistance, low friction, low moisture absorption, and high wear resistance. They feature an injection-molded, reinforced nylon race design and self-lubricating characteristics provide low...
Jan. 2, 2007 | http://hydraulicspneumatics.com/other-technologies/stainless-steel-rod-ends
Article

Modular FRL

Filter-regulator-lubricator is available in three body sizes (1/4, 3/8, and 1/2 in.) and five port sizes (1/8 to 3/4 in. NPT). Options include 5, 25, and 50 m filter elements, low-pressure range regulators, manual or auto drain filter, pressure...
Jan. 2, 2007 | http://hydraulicspneumatics.com/200/TechZone/AirFiltersandFR/Article/False/43977/TechZone-AirFiltersandFR
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