Some relief for pumps
August 2002
Valves, Actuators & Pump Control
The model 480/490 is a spring-loaded liquid relief valve, certified to BS6759 Part 3 by SAFED/AOTC and is unlike any other valve in its range. The design features of this valve make it suitable for pressure relief and by-pass duties for positive displacement pumps.
The design of this particular relief valve ensures that the adjusting spring is completely isolated from the fluid during the discharge operation of the valve. The adjusting spring is housed in a cartridge type assembly, isolated by a spindle 'O' ring manufactured from Nitrile or Viton rubber, according to type.
The main benefits are that the spring is protected from the risk of corrosion and that the valve internals can be cleaned without disturbing the spring setting, alleviating the need to reset the valve. This is possible because the spring housing can be completely withdrawn from the valve body intact.
The spring cartridge assembly can be supplied separately for use as an integral pump bypass relief valve. All 480/490 relief valves are equipped with top guided valve discs that are precision lapped and the valves are available with either male or female threaded connections in BSP or NPT.
There are three valves in the 480/490 series of relief valves, the main difference being the materials of construction. The 480 is a bronze relief valve, the 485 is also bronze, but has a renewable stainless steel seat, while the 490 is manufactured totally out of stainless steel. The fact that the valves are manufactured from bronze and/or stainless steel makes the series suitable for a wide range of corrosive/noncorrosive fluids.
With certified flows of 10% overpressure, the 480/490 series of relief valves are a suitable choice for pump manufacturers and pump users.
For more information: Ron Buchanan, DLM, 011 457 0500, [email protected], www.dlm.co.za
Further reading:
Developing solutions for SA’s wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps has a proud global legacy in the development of self-priming pump technology, which reflects decades of engineering innovation and application expertise. Building on this foundation, KSB’s AU series has extended the company’s self-priming expertise into screened wastewater handling, which meets the growing needs of municipal and industrial sectors worldwide.
Read more...
Helping to solve wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps and Valves is doubling its efforts to help government and municipalities find practical and technical solutions to the growing wastewater challenges gripping large parts of the country.
Read more...
Duplex valve improves continuous production at Gauteng manufacturing facility
Valves, Actuators & Pump Control
In a recent installation at a Gauteng-based manufacturer of household and personal care products, Allmech provided a tailored water treatment solution to ensure a consistent supply of soft water for steam generation, an essential element in the client’s 24/7 production cycle.
Read more...
Ultra-durable stainless steel submersible pumps
Valves, Actuators & Pump Control
KSB Pumps and Valves has launched a rugged stainless-steel submersible pump range designed for deep borehole use and other demanding freshwater and saline pumping applications.
Read more...
Industrial valve solutions
Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG’s Fluid Technology division supplies and supports an extensive range of components for fluid technology systems. These include valves, hydraulic hoses and fittings, accumulators, cylinders, heat exchangers, hydraulic motors and hydraulic plumbing, as well as pumps and reservoir accessories.
Read more...
New wastewater pump for local municipalities and industries
Valves, Actuators & Pump Control
The latest wastewater pump from KSB Pumps and Valves is making waves in the industry due to a host of new features that provide users with an ultra-durable long service pump with fewer blockages and a lower maintenance requirement than traditional pumps.
Read more...
The critical role of check valves in fluid systems
Valves, Actuators & Pump Control
In fluid power systems, the performance and reliability of the entire operation often hinge on components that are small in size but significant in function. Among these, the check valve stands out as a fundamental yet frequently overlooked element.
Read more...
ENERGYValves expands operations
Valves, Actuators & Pump Control
ENERGYValves is expanding its operations with a new facility in Cape Town. The new premises will significantly enhance the company’s capacity to serve the Cape Town market and surrounding areas.
Read more...
Pumps lead the way with advanced technology
Valves, Actuators & Pump Control
The KSB GIW MDX pump has consistently represented a major leap forward in mill duty applications, with KSB relying on customer feedback to improving the design continuously.
Read more...
Wireless leak detection valve
Valves, Actuators & Pump Control
Designed to prevent water leakage by automatically shutting off the water supply when a leak is detected, the Runxin F104 wireless leak detection valve is one of the latest offerings from Allmech.
Read more...
printer friendly version