Instruction manuals are provided for orientation of the operators, but it is supposed that they have a basic knowledge level. If any doubts or ambiguities remain that could affect the proper procedures ask Gascat, which will be pleased to instruct, or to provide the suitable service or instruction. NOT TO TAKE ANY RISK. Our telephone, fax numbers, and e-mail are the following: Gascat Indústria e Comércio Ltda.
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 1.1.2 – INSTALLATION All equipment, piping, and vessels are designed to support mechanical efforts, as, for instance, torque and bending momentum, in addition to internal pressure. However, careful shall be exercised during installation not to develop excessive efforts, which can cause cracks that may result in serious breakage when the regulator is put into operation.
Brise Plus pressure regulating valve was designed by Gascat’s Engineering to assist many different applications and service conditions according to valve configuration. Brise Plus series is a pilot pressure regulating valve and it can be utilized with all non-corrosive gas group and for corrosive gases when built in special versions.
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 2.3.7 – PRESSURE REGULATOR SPRING RANGE (SET-POINT) G-50 PILOT (old model) SPRING COLOR PART NUMBER RANGE 01.50.08 7,5 – 16,5 mbar BLUE 01.50.09 12,5 – 21,0 mbar GREEN 01.50.10 15,0 –...
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve G-80 PILOT SPRING COLOR PART NUMBER RANGE YELLOW / GREY 01.50.09P 20 – 50 mbar BLUE 01.53.35 40 – 130 mbar WHITE / GREY 01.50.21A 90 – 250 mbar SILVER 01.50.21P...
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 2.3.9 – ACCURACY AND LOCK UP Pressure regulator: AC up to 2,5% / SG up to 5% SSV: AG up to 5 2.3.10 – PRESSURE REGULATOR DIMENSIONS (STANDARD LAYOUT)
3 – OPERATING PRINCIPLE Brise Plus Series works by loading pressure principle by pilot in the upper cover diaphragm of main valve that, through the pressure differential between loading and inlet, it moves the diaphragm and, consequently, the main stem and obturador.
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve A filter is assembled upstream the pre-regulator and pilot to protect them against gas / installation impurities. When there is gas flow, the pilot compares the outlet pressure with the adjusted pressure in the pilot spring. If the pressure under the pilot diaphragm is lower than the desirable pressure the pilot will open and feed the upper chamber actuator of main valve.
3.1 – PRE PILOT AND INTERNAL FILTER The pressure regulator model BRISE PLUS manufacture by GASCAT can use pre pilot model G-38 or G-43 (Booster). The function of this pre pilot is reduce the pilot inlet pressure and reduce the effects of inlet pressure variation increasing the accuracy and performance of equipment.
G-38 PRE PILOT 3.2 – PILOT The pressure regulator model BRISE PLUS manufacture by GASCAT use pilot model G-80 or G-43M+31 depending of the desired set-point. If the set-point is greater than 2.4 bar, applies the G-43M + G31. This pilot is responsible by the control of feed pressure of main regulator actuator and by consequence of the pressure regulator aperture.
3.3.2 – H ACTUATOR For medium working pressures (80 mbar to 3.5 bar) the BRISE PLUS regulator uses the H actuator, a high rangeability and compact design.
1) The equipment are in perfect conditions or has evidences of damage during the transport, in case of perceptible damage in the equipment do not proceed with installations and get in contact with GASCAT. 2) The space provided for the acess and installation of equipment is appropriate, including future maintenance.
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 4.3 – FILTER We recommended the installation of a basket type filter, with minimum 150 mesh, as close as possible to the regulator input, without being joined flange to flange, because, if the filter is installed immediately upstream of the regulator, it can produce turbulence that will cause disturbances in the pressure control of the regulator.
We do not recommend installations of any type of block valve in the sensing lines. The connections of BRISE PLUS sense and discharge line are normally supplied for 10 mm OD pipe, however other connections could be arranged under consult.
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 1) Close slowly the on-off manual valve upstream of regulator. 2) Close slowly the on-off manual valve downstream of regulator. 3) Certify that the springs of pre pilot and pilot are totally released.
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 6 – TROUBLE SHOOTING To maintain the pressure regulator in the correct conditions of operation, the pressure regulators model BRISE PLUS must be submitted to preventive maintenance, the periodicity depends of the flow, quantity/type of contaminants and the operation conditions.
Gascat's technical department that will give you proper guidance. 3) Gascat supplies, on request, a complete replacement kit. 10 – COMPONENTS & SPARE PARTS Find below the components positions and spare parts components of BRISE PLUS, PRE PILOT G-38, PILOT G-50, PILOT G-80 and PILOT-G43M+31. Elaborado...
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve Elaborado Verificado / Aprovado Data Revisão Página 10/09/18 24 de 45...
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 11 – PROCEDURE FOR BRISE PLUS REGULATOR DISASSEMBLY Before proceeding with the equipment disassembly, check if all the conditions set out in item 5.1 of this manual have been observed.
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 6) Remove the pin with a pin punch tool and remove the top plate ( 13 mm wrench). 7) Remove the screw along the bottom cover and remove the it (6 mm allen wrench).
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 9) Remove the Shutter (ND2” = 6 mm / DN3” = 8 mm wrench) and with a tool (ND2” = 12 mm / DN3” = 17 mm wrench) fix the main shaft.
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 11.2 SLAM SHUT VALVE (ACTUATOR L & H) 1) Discharge the SSV adjusting spring by turning the spring adjusting counterclockwise (15 mm wrench). 2) Remove all screws along the SSV cover (4mm wrench).
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 11.3 G-80 PILOT 1) Remove all screws along the pilot covers (4 mm and 6 mm wrench). 2) Remove the lever screws and the lower cover screws (3 mm, 5 mm and 10 mm wrench).
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 3) Turn the pilot upside down, remove the pilot cartridges (7/8”, 1.1/2” wrench and 5 mm allen wrench). 4) Remove the seat (19 mm wrench). Elaborado Verificado / Aprovado Data Revisão...
5) To disassembly the diaphragm it is necessary an allen tool 4.0mm (or similar) and a 10 mm wrench. 12 – PROCEDURE FOR BRISE PLUS REGULATOR ASSEMBLY To make the assembly this pressure regulator valve, just follow the steps of the procedure in inverse order, but we shall make some observations on specific points that must be examined closely during the reassembly.
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 2) It is important when assembly the main diaphragm, rolling diaphragm and the shutter to fix the shaft to avoid the damage in them. Elaborado Verificado / Aprovado Data Revisão...
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 12.2 G-80 PILOT 1) To make the assembly of the diaphragm, fold it to do a “line” in the diaphragm and align with a allen tool 4 mm (or similar).
Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve 13 – RECOMMENDED TORQUES When tightening fasteners arranged in a circular pattern, alternate the tightening of each fastener with the fastener directly across from it using a “star” criss-cross pattern for five times, until proper specified torque is achieved.
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Installation and Operation Manual MI-23 Brise Plus - Pressure Regulating Valve Torque Screw [lbf.ft] Elaborado Verificado / Aprovado Data Revisão Página 10/09/18 45 de 45...
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