Abstract: A locking device for a lever of a gas valve, the gas valve including a valve body, an operating part, a first locking protrusion, the lever having a rotating portion, a standing portion and a grasping portion bent sequentially from the rotating portion, and first and second locking bent portions, wherein the locking device includes: a locking member consisting of a guide portion for guiding the standing portion, a bottom portion extending downward from the bottom of the guide portion, a locking groove for inserting a second locking protrusion, and a side portion locked onto the second locking protrusion; and a spring member fitted to the standing portion to push the guide portion toward the rotating portion.

Abstract: The present disclosure relates to an air conditioner pipe including: a corrugated stainless steel pipe; straight pipe portions formed on both ends of the corrugated stainless steel pipe to fit connection members thereto; a knitted mesh for inserting the corrugated stainless steel pipe thereinto; and a fixing ring member for fixing each end of the knitted mesh to the corresponding straight pipe portion, wherein each straight pipe portion is formed of a straight pipe member having a higher thickness than the corrugated stainless steel pipe and is welded to the corresponding end portion of the corrugated stainless steel pipe, so that the straight pipe portion is reinforced.

Abstract: A corrugated pipe connection device including: a corrugated stainless steel pipe; a straight pipe portion formed on each end of the corrugated stainless steel pipe; a connection member made of a metal and fitted to the outer periphery of the straight pipe portion; a synthetic resin sleeve fitted to the outer periphery of the straight pipe portion and having a flange; an expansion portion expanded from the end of the straight pipe portion; and a silicone packing having a ring portion coming into contact with the expansion portion, a protrusion portion protruding inwardly from the inner periphery of the ring portion to be inserted to the inside the straight pipe portion, and an insertion portion formed on the outer periphery thereof to surround the expansion portion therewith.

Abstract: Side brackets for installing a sprinkler, installed on both ends of a support bar; standing parts formed at a distance of a width of the support bar; a first elongated hole in each of the standing parts; a top surface part having a first protruding part and a screw hole and pressing member; a first wing part with a second elongated hole; a second protruding part and a support part formed at an upper portion thereof; a second wing part at a lower portion of the second protruding part; and a coupling hole formed in the second wing part.

Abstract: A corrugated pipe for high pressure having a metal braided net, which includes a joining portion formed to be twice as thick as a corrugated pipe when a valley and a crest of an end portion of the corrugated pipe are compressed to form a flat radial surface, a connector welded to the joining portion, and a coupling ring compressed on the connector, so that the thickness of the welded portion of the corrugated pipe is doubled, and the portion where the coupling ring is compressed is formed on the groove portion of the connector.

Abstract: Disclosed herein is a flexible hose identification sleeve for a sprinkler, which can be bent and hung regardless of the position of a main pipe or other supporting members. The flexible hose identification sleeve for a sprinkler includes: a sleeve member having a hole formed in one side and an opening formed on the outer face thereof and fitted around the outer diameter of a flexible hose; and a hanging device connected to the hole of the sleeve member for hanging the flexible hose which can be bent.

Abstract: Disclosed herein is a flexible hose identification sleeve for a sprinkler, which can be bent and hung regardless of the position of a main pipe or other supporting members. The flexible hose identification sleeve for a sprinkler includes: a sleeve member having a hole formed in one side and an opening formed on the outer face thereof and fitted around the outer diameter of a flexible hose; and a hanging device connected to the hole of the sleeve member for hanging the flexible hose which can be bent.

Abstract: A corrugated pipe for high pressure having a metal braided net, which includes a joining portion formed to be twice as thick as a corrugated pipe when a valley and a crest of an end portion of the corrugated pipe are compressed to form a flat radial surface, a connector welded to the joining portion, and a coupling ring compressed on the connector, so that the thickness of the welded portion of the corrugated pipe is doubled, and the portion where the coupling ring is compressed is formed on the groove portion of the connector.

Abstract: A water hammer prevention device for a boiler includes: a housing; a joint coupled to the housing for water flow; a water hammer prevention part to which water pressure introduced through the joint is applied and wherein the water hammer prevention means is a flexible displacement member, including a coupling part formed between the first and second members of the housing to be fastened; an inclined part formed inclined downwardly from the coupling part and the water hammer displacement part upwardly protruding from the inclined part, and an elastic member mounted between the lower surface of the water hammer displacement part and the second member to provide a restoring force.

Abstract: A sprinkler reducer fixing bracket that is capable of allowing a reducer to be adjusted in height, especially in a state where the reducer is coupled thereto. The sprinkler reducer fixing bracket includes a body fitted to a horizontal bar, a hook member whose one side is rotatably coupled to the body by means of a shaft member, a locking shaft disposed on the hook member and having a cam portion adapted to push the body to allow the hook member to move to a position for fixing the reducer up and down, and U-shaped first and second locking pins adapted to allow the hook member to maintain the fixed position of the reducer in the up and down directions.

Abstract: A sprinkler support frame coupling device that is capable of allowing a horizontal bar having a square section so as to install a sprinkler thereon to be simply and firmly fitted to a support frame mounted on a ceiling. The sprinkler support frame coupling device is configured to allow a lever of a bracket to be pushed by a user's hand so that the bracket is firmly coupled to a support frame.

Abstract: Disclosed is a valve device capable of washing an internal pipe in a hot water boiler wherein an operating part is not brought into contact with a body made of a metal material, and even though the valve device is not used for a long period of time, the operating part does not adhere to the body, and wherein the valve device is simple in configuration so that it can be easily mounted on a restricted installation area.

Abstract: The present invention relates to a sprinkler reducer fixing bracket including: a body having an insertion space portion fitted to a horizontal bar, a first mounting portion to which a reducer is fitted, first shaft holes formed on one side of the first mounting portion, a through hole formed at the center of a wall portion defining the insertion space portion, protruding portions protruding backwardly from the top and underside of the through hole, and long holes formed on the protruding portions; a locking pin having a shape of ‘U’ fitted to the long holes; a hook having a second mounting portion to which the reducer is fitted, second shaft holes formed on one side of the second mounting portion, and a plurality of inclined teeth formed at a position pushing one side of the locking pin on the rear side thereof when turned around a shaft member and becomes at a closed position; and the shaft member coupled to the first shaft hole and the second shaft hole.

Abstract: Disclosed therein is an excess flow shut off device which is operated under the same conditions by integrally modulating an opening and closing member, a support member for supporting the opening and a blocking member for blocking a passage by the opening and closing member. The excess flow shut off device is easy in quality management and allows an easy manufacture of uniform products operating under the same conditions because a support member, a spring, an opening and closing member, a joining member, and a cylindrical member are integrally joined together and modulated.

Abstract: A coupler for a corrugated pipe that is provided with a sealing member mounted inside a fastening member and made of a softer metal material than the corrugated pipe, thereby preventing the fastening member from being damaged due to the fastening force of a cap nut, and that is provided with a grounding portion formed at the front portion of a metal sleeve in such a manner as to enter a coated layer of a composite member and to be grounded to a metal braided net of the composite member when the cap nut is fastened, thereby protecting the corrugated pipe from lightning.

Abstract: Disclosed is a valve device capable of washing an internal pipe in a hot water boiler wherein an operating part is not brought into contact with a body made of a metal material, and even though the valve device is not used for a long period of time, the operating part does not adhere to the body, and wherein the valve device is simple in configuration so that it can be mounted on a restricted installation area.

Abstract: A joint device for a corrugated pipe. A socket pipe in which a packing is forcedly inserted is joined to a non-corrugated part of the corrugated pipe and the non-corrugated part is expanded at the position of the packing. The joint device has a guide groove formed on the outer circumference of the socket pipe, a connector fit to the socket pipe, and a movable bolt screw-coupled to the outer face of the socket pipe and forcedly joined to the guide groove, so as to freely rotate the connector independently from the corrugated pipe.

Abstract: Disclosed therein is a gas valve having automatically blocking means, which is mounted at an inlet side of a valve body having a ball valve so that the gas valve does not need additional blocking means for blocking a gas pipe at the time of a gas leak, and which returns a blocking member to its original position when the valve is opened after coping with the gas leak at the leaked portion, thereby making maintenance easy.

Abstract: Disclosed therein is a gas valve having automatically blocking means, which is mounted at an inlet side of a valve body having a ball valve so that the gas valve does not need additional blocking means for blocking a gas pipe at the time of a gas leak, and which returns a blocking member to its original position when the valve is opened after coping with the gas leak at the leaked portion, thereby making maintenance easy.

Abstract: Disclosed is a sprinkler mounting device having a mounting bracket that includes a tightening member mounted on the front of a bracket body for opening and closing an open portion by a lever, so that the tightening member can firmly hold a reducer, to which a head is joined, once a worker shifts the lever back after inserting the reducer into the bracket body.