Hydrostatic Water Pressure Release valves
Hydrostatic pressure relief valves, sometimes referred to as water pressure relief valves, are essential for safeguarding concrete tanks against the risks posed by rising groundwater. As water tables increase, the resulting pressure can threaten the stability of a tank’s base and walls, potentially causing it to lift or sustain damage. To counter this, these valves are carefully positioned to discharge excess groundwater, helping to equalize internal and external pressure. This pressure regulation helps preserve the tank’s structural integrity and reduces the likelihood of expensive damage. Troy Valve’s relief valves are crafted with precision and built for long-term performance, providing dependable protection for your water storage and treatment infrastructure. With Troy Valve, you can trust that your tanks are secure from the challenges of groundwater pressure.
Floor-type and wall-type water pressure relief valves serve similar protective functions but are installed in different parts of a tank. Floor-type valves are positioned at the tank's base and allow rising groundwater to enter when pressure exceeds a certain level, preventing the tank from floating. In contrast, wall-type valves are installed in the tank's sidewalls and release excess groundwater pressure from the outside, helping maintain structural stability. Both are essential for protecting tanks from the damaging effects of hydrostatic pressure.
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Installed at the base of a tank or basin, floor-type pressure relief valves activate when groundwater levels rise, helping to prevent tank flotation that could lead to structural damage like cracking. These valves play a critical role in balancing internal and external pressures, supporting the overall durability and performance of the system.
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Troy Valve’s durable, flat-surface lid features a resilient-to-bronze or resilient-to-stainless steel seating, delivering superior performance compared to standard rubber-to-rubber seals, which are often wide and difficult to seal effectively.
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Designed for easy maintenance, the removable grate can be accessed by simply removing the lid and reaching in—no tools required.
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The valve can be easily extended with PVC to match exact wall thicknesses, reducing the need for additional field modifications during installation.
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Troy Valve’s bonded gasket design ensures the gasket remains securely in place and resists collapsing under water pressure.
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The water stop is built directly into the cast valve to provide added protection against leaks around the valve body.
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Stainless steel mud valves are designed for heavy duty uses ranging from very corrosive environments to potable drinking water plants.
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All mud valves are 3rd party tested by an ACLASS accredited ISO certified lab.
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All components are cast in 316 stainless steel. Construction has been proved to resist corrosion over long periods of time.
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Stem is made of ACME threads which have been shown to have reduced stress concentrations providing longer valve longevity compared to cut threads. The plug valve also utilizes hydraulic relief slots, a critical feature for sludge drainage.
MUD VALVE OPERATORS
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Floor stands are used for floor level operation of mud valves. They allow easy use and indication of your valve.
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Troy valve floor stands are made of 304 or 316 Stainless Steel and Cast Ductile Iron.
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All floor stands have the capacity for the following customizations:
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Fabricated to desired height
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Rising, non-rising or offset configurations
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Indicating or non-indicating
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83, 144, and 288 turn options
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Pre-machined to accept electric or manual actuators
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Water tight model
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Bushed guide plate at base for stem guidance
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Handwheels or operating nuts
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Extension stems bring the operation of the mud valve closer to the operator, making it faster and safer to open the valve.
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Troy valve extension stems are made of carbon or 304/316 stainless steel, solid bar stock or pipe
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All extension stems have the capacity for the following customizations:
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Field adjustable–no welding required
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U-joints for offset applications
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Handwheels, operating nuts, couplings, and stem guides
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Floor boxes are installed in a concrete floor or slab and offer a non-obstructing point of operation for the valve. These should only be used with non-rising stem valves.
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All Troy valve mud valve floor boxes are made of cast iron
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Troy valve mud valve floor boxes have the capacity for the following customizations:
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Bronze bushing bored to specification
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Field adjustable to 8”, 10”, or 12” floor thickness
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Troy Valve stem guides prevent bending or buckling for reliable inline operation of the extension stem.
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All Stem Guides are made of Cast Ductile Iron or cast stainless steel. The bushings are either bronze or UHMW
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Troy valve stem guides for mud valves have the capacity for the following customizations:
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Custom bushing materials
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Available in a variety of sizes and configurations
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