HYDROGEN GENERATION SYSTEM AND REGULATOR THEREFOR

SYSTEMS AND METHODS FOR DETERMINING VALVE FLUTTER

DUAL AIR ADMITTANCE VALVE WITH LOCKING MECHANISM AND PRESSURE INDICATOR

VALVE CASSETTE FOR A TURBINE MECHANICAL VENTILATOR METHOD FOR HOLDING AIRWAY PRESSURE

VALVE CASSETTE FOR A TURBINE MECHANICAL VENTILATOR METHOD FOR HOLDING AIRWAY PRESSURE

Telescoping spring retention assembly for a check valve

Modular Valve Assemblies with Optional Swing Out

Backflow prevention assembly having a cartridge with dual zone testing

RISER MANIFOLD LAYOUT

CHECK COVER ASSEMBLIES FOR BACKFLOW PREVENTION ASSEMBLIES WITH INTEGRATED TEST COCK PROTECTION SHROUD

FOOT VALVE ASSEMBLY AND SUBMERGED PUMP SYSTEM

Compact valve assembly

DUAL AIR ADMITTANCE VALVE WITH LOCKING MECHANISM AND PRESSURE INDICATOR

Backflow prevention assembly having a cartridge with dual zone testing

Backflow blocking device for axial fans

Reversible spring retention assembly for a valve

Eccentric backflow preventer

Check cover assemblies for backflow prevention assemblies with integrated test cock protection shroud

Check valve cartridge with flow guide for compact backflow prevention assembly

Blade type check valve

Smart and connected backflow preventer assembly

Dual air admittance valve with locking mechanism and pressure indicator

Grout vacuum systems and methods

Oil returning valve set with multi-stage throttling control

Combination water outlet device and toilet

Artificial heart system

Press type valve core

Low profile break-off check valve for wet barrel hydrant

VALVE

Directional valve, especially for breathing gases, and method for manufacturing same

Check valves

Dual Air Admittance Valve with Locking Mechanism and Pressure Indicator

Valve assembly for a refrigerant circuit

Check valves

Multi-stage displacement pump

Low flow-restriction shut-off valve with excess flow closure functionality

High speed injector apparatus with dual throttle bodies

Ventilation flow rate regulator for a pressurised tank of a vehicle

Wireline valve with flapper

Flap-retaining clip for a pressure relief assembly

Directional valve, especially for breathing gases, and method for manufacturing same

Check valve

Dual air admittance valve with locking mechanism and pressure indicator

NONE

Check valve for preventing slam and water hammer

Butterfly valve, sterile powder conveying device composed of multiple butterfly valves and its method of use

Check valve

Check valve

Multi-flapper check valve without center supports

Variable valve

Water inflow prevention device for aircraft working when landing in water, pressure adjusting valve, and aircraft

Discharge valve and compressor comprising same

Anti-flutter check valve

Check valves

CHECK VALVE HINGE PIN

Return air blocking device for ventilation of the interior of a motor vehicle

Dual action check valve with combined return and bypass passages

Adjustable dishwasher conduit valve system

Large-scale hydraulic variable-speed floating box flap valve

HIGH-SPEED CHECK VALVE SUITABLE FOR CRYOGENS AND HIGH REVERSE PRESSURE

Backflow prevention device and fan assembly

COMPRESSOR VALVE ARRANGEMENT

One-way valve for a fuel-tank filling conduit

WIND-PRESSURE SHUTTER AND COOLING FAN SYSTEM

Fluid Check Valve with a Floating Pivot

Pressure relief valve

Fluid circuit breaker quick disconnect coupling

Vent flap

Breath controlled air inlet for blower

Montgomery soft stroke one way valve

Reverse flow preventing device and electronic apparatus

Device for preventing backflow in a cooling system

DOUBLE HEAT TRAP IN UNITARY BODY

Active pressure relief valves and methods of use

Non-return valve for vehicle ventilation

Normally open reverse flow flapper valve

Flange valve

Reverse flow preventing device and electronic apparatus

Method and mechanism for symmetrically controlling pressure in process chamber

Flapper valves with hydrofoil and valve systems

Gate valve for use with a grain bin