DUAL SEAL PLUG VALVES DB&B API 6D
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GALLI&CASSINA SINCE 1919 i DUAL SEAL D.BsB

Our products are being used in the most important Plants and Gas Pipelines all over the world. Galli&Cassina Plug Valves are used in the most important hydrocarbon plants and gas pipelines all over the world. For over 70 years Galli&Cassina has been committed to provide service to the end-users with a full range of products ensuring total customer’s satisfaction. Galli&Cassina is represented by sales offices worldwide and you are requested to contact our main office in Italy for more details.

Galli&Cassina Profile TORINO BERGAMO i V' I ■ GENOVA BOLOGNA ■ with extensive offices and workshop covering 12.000 sq.mt. area including 5000 sq.mt. of covered space. After the first ten years the company gradually turned its production towards the newly born Chemical Industry. G&C was the first in Italy to produce valves in stainless steel and other special material in light with the demand of the Galli&Cassina is a prominent Italian Company, leader in Design and manufacturing a complete range of Lubricated Plug valves. The company is located in Solaro near to Milan (Italy) ■ MALPENSA...

Galli&Cassina is a world’s leading manufacturer of plug valves for Oil & Gas and Chemical application since 1919. The company is located in Solaro near Milan (Italy) with extensive offices and workshop covering a 12.000 sq.mt. area including 5.000 sq.mt. of covered space. Galli&Cassinas Quality Assurance System ISO 9001 has been assessed, approved and certified by Lloyd’s Register as well as the Enviromental Management System ISO 14001 and Occupational Health & Safety Systems ISO 18001. Valves design is fully developed by Galli&Cassina technical department and it complies to API 6D...

Galli&Cassina Profile

DBB Technical Descriptions The Galli&Cassina Dual Seal Double Block & Bleed valve is a single valve that simultaneously blocks both the upstream and downstream flow while allowing the user to verify tightness using a manual or automatic body bleed system. They are designed for applications where positive shut-off, verifiable zero leakage and double block and bleed (DBB) capabilities are required. The DBB feature is ensured by two slips with bonded in seals sliding on the tapered plug to achieve upstream and downstream tight shut-off sealing. During opening operation the plug is pulled up...

Company Profile DBB Technical Descriptions6 Quality Assure Programme 24 Product Identification System8 Quality Assure System Material Selection9 Quality Assure Development Tipical Valve Assembly10 Customer Service25 Pressure Relief System10 Conversion Table26-27 Fire Safe Test12 Temperature Conversion Table 28 Available Test13 Pressure/Temperature Applicable Standard-Specification14 Rating According to ASME B16.34-2013 29 Pressure Test Tables in Accordance 15 Chemical and Mechanical 30-31 with API598 & API 6D. Requirements for Body, Plug & Cover Hydraulic...

Identification numbers here shown are used to describe essential features of Galli & Cassina valves. Valve Type According to client’s materials requirement Internal Material Identification The Code used as sample above (100 EPCC01 R 0001) identifies a: DN 100 (4”) - Expanding plug valve -Short pattern - Handwheel operated - ANS1150 (PN 20) - Flange ends connection - Standard carbon steel materials suitable for ambient and higher temperature service. Optional Special Features • T Completely Buried P Partially Buried • N Pups • J Partially Buried and Pups See G&C green catalogue “LUBRICATED...

Material Selection Guide for GALLI&CASSINA Valves Trim materials are designed according to the service conditions. 1 Standard Carbon Steel Body and Plug. (ASTM-A216 WCB/WCC material) suitable for general services. 2 Carbon Steel Body and Plug (A352 LCB/LCC material) suitable for low temperature services. 3 Carbon Steel Body and Plug (ASTM A216WCB/WCC material) suitable for “SOUR SERVICE” (H2S and CO2) according to NACE-MR.01.75/Latest Edition. 4 Special Austenitic (6MO) and Ferritic-Austenitic Stainless Steel (Duplex and Superduplex) suitable for sea water and corrosive services. 5 Other...

Tipical Valve Assembly 13 29 STEAM GREASE INJECTOR STOP TRAVEL GLAND PLATE 27 STEM THRUST WASHER COVER PLATE 11 UPPER GLAND RING STEM PACKING 22-23 INNER-OUTER STEM-BOX O-RING 10 PACKING GLAND 09 LOWER GLAND RING 03 UPPER BONNET BODY O-RING SLIP SEAL BODY FIRE SAFE BONNET DRAIN PLUGGED 05 SLIP 26 PLUG BEARING 30 TRUNNION 02 LOWER BONNET Bill of Components Ref. Part Name No 01 Body 02 Lower Bonnet 03 Upper Bonnet 04 Plug 05 Slip 06 Stem 07 Stem Crew 08 Coupling 09 Lower Gland Ring 10 Packing Gland 11 Upper Gland Ring 12 Gland Plate 13 Cover Plate 14 Stop Travel Ref. Part Name No 15 Body Stud...

Pressure Relief System The Automatic Body Bleed Valve provides visual, positive assurance that the Dual Seal has sealed completely at each cycling operation and prevents thermal pressure buildups in the body cavity. An automatic bleed valve connected to the body cavity of the main valve is mechanically opened by the valve operator when the Dual Seal is closed. Seal integrity is indicated by viewing the When the Dual Seal is opened, the bleed valve is automatically closed by the combination of line pressure and the spring in the bleed valve. Manual Bleed Valve to Atmosphere.1 A manual bleed...

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Available Tests Type of Test Applicable Standards X AND GAMMA RAYS ANSI B16.34 - Annex-B ASME VIII - Div.1 - MSS - SP 54 ASTM E446 - E186 - E280 DYE PENETRANT ASME V - art.6 and 24 - ASTM E142 100% ANSI B16.34 - Annex-D MSS-SP-93 OPERATION TORQUE HIGH PRESSURE CLOSURE 100% all butt welding ends and body. All butt welding ends ASME V - art.7 and 25 100% of all valves ANSI B16.34 - Annex C - MSS - SP 53 ASME V - art.4 and 23 ASME VIII - Div.1 - ASTM - A388 NACE - MR.01.75 Latest Edition POSITIVE MATERIAL ASTM A751 IDENTIFICATION Upon customer request 100% of rough and finished machined...