A jetting device and/or fluid module include a module body defining a passageway extending through the module body and also partially defining a fluid chamber, a nozzle supported by the module body, a valve element at least partially within the fluid chamber, a biasing element contacting the valve element and also contacting the module body, and a sealing member contacting the periphery of the valve element and configured to partially define the fluid chamber. The nozzle defines a fluid outlet that is in fluid communication with the fluid chamber. The valve element has an upper portion outside of the fluid chamber that is adapted for contact with the drive pin, and the biasing element is configured to apply a spring force to the valve element. The valve element is configured to cause a droplet of the fluid to be jetted from the fluid outlet when the valve element is moved in the direction toward the nozzle.

Jetting devices and methods for dispensing a fluid material from a fluid supply. A jetting device includes a fluid module configured to be coupled with the fluid supply and to dispense the fluid material. The fluid module includes a valve seat and a valve element configured to move relative to the valve seat over a stroke length, and a valve stop configured to position the valve element relative to the valve seat for determining the stroke length. The jetting device further includes a drive module configured to actuate the fluid module and includes a drive pin configured to move the valve element toward the valve seat. The drive pin is configured to be rotated to cause rotation of the valve stop for adjustment of the stroke length. The drive pin may be rotated by a rotation device comprising a motor.

A nozzle assembly for spraying cooling fluid in a steam-desuperheating device, includes: a nozzle body; a plug element movably attached to the nozzle body; and a splitter member fixed to a front face of the plug element. The splitter member has at least one splitter arm extending across the flow passage formed in the nozzle body as viewed from the front of the plug element to deflect flow of fluid sprayed through the flow passage.

Aspects of the disclosure are directed to a spray gun apparatus having a casing with a nozzle. A rod extends within the casing and has an end portion with openings therein, for dispensing material. The rod operates with the casing to move relative to one another, for selectively dispensing the material. When the nozzle is positioned such that it is offset from the end portion of the rod, fluid material is allowed to flow out of the rod and is dispensed through the nozzle. When the end portion of the rod is positioned to seal the nozzle opening (e.g., via relative movement of the casing and rod), the fluid material is prevented from being dispensed through the nozzle. In certain implementations, an adapter interface is operable for coupling to an aerosol container having the material to be dispensed, and includes a conduit coupled to the rod for supplying the material.

A greenhouse comprises a support frame and a spray pipe including pipes and pipe joints, the pipe joint comprises a connecting pipe and two rotary sleeves, the two adjacent pipes are respectively inserted into the connecting pipe, ends of a first pipe are respectively sleeved with a sealing sleeve and a locking sleeve, and each of the ends of the first pipe is further sleeved with a washer. When the rotary sleeve is thread-tightened, the connecting pipe and the locking sleeve are capable of respectively abutting and pressing against two sides of the washer, under abutting and pushing of the rotary sleeve and limiting of the washer, the locking sleeve is capable of grasping the first pipe and forming an axial positioning with the rotary sleeve. An inner edge of an end surface of the connecting pipe has a sealing tapered surface capable of acting on the sealing sleeve.

A fluid dispenser having an accumulator and a discharge head. The discharge head is secured to a base unit of the dispenser, which base unit includes a fluid accumulator. The discharge head has a housing displaceable relative to the base unit for actuating the dispenser. The discharge head has an inlet through which fluid travels from the fluid accumulator into the discharge head, and a discharge opening through which the fluid is delivered into the atmosphere. A swirling chamber having an inlet channel is provided between the fluid inlet and the discharge opening so that inflowing fluid is provided with a swirl which forms a spray stream when exiting the discharge opening. The swirling chamber is switched between a first and a second configuration by changing the geometry of its walls and/or the inlet channel.

Aspects of the disclosure are directed to a spray gun apparatus having a casing with a nozzle. A rod extends within the casing and has an end portion with openings therein, for dispensing material. The rod operates with the casing to move relative to one another, for selectively dispensing the material. When the nozzle is positioned such that it is offset from the end portion of the rod, fluid material is allowed to flow out of the rod and is dispensed through the nozzle. When the end portion of the rod is positioned to seal the nozzle opening (e.g., via relative movement of the casing and rod), the fluid material is prevented from being dispensed through the nozzle. In certain implementations, an adapter interface is operable for coupling to an aerosol container having the material to be dispensed, and includes a conduit coupled to the rod for supplying the material.

An irrigation nozzle is provided with a grit diversion feature to divert grit away from the interior of the nozzle. The nozzle includes a pattern template that defines the irrigation pattern produced by the nozzle. The pattern template includes one or more flow channels that may be susceptible to clogging with grit. The grit diversion feature includes one or more grit vents to redirect grit away from the interior of the nozzle and may further include an inner wall about the central hub that helps protect the central hub from intrusion by grit.

An irrigation nozzle is provided with a grit diversion feature to divert grit away from the interior of the nozzle. The nozzle includes a pattern template that defines the irrigation pattern produced by the nozzle. The pattern template includes one or more flow channels that may be susceptible to clogging with grit. The grit diversion feature includes one or more grit vents to redirect grit away from the interior of the nozzle and may further include an inner wall about the central hub that helps protect the central hub from intrusion by grit.

An irrigation nozzle with a rotating deflector is provided whose rotational speed may be controlled by a friction brake. The nozzle may also include an arc adjustment valve having two portions that helically engage each other to define an opening that may be adjusted at the top of the sprinkler to a desired arcuate length. The arcuate length may be adjusted by pressing down and rotating a deflector to directly actuate the valve. The nozzle may also include a radius reduction valve that may be adjusted by actuation of an outer wall of the nozzle. Rotation of the outer wall causes a flow control member to move axially to or away from an inlet.