PRESSURE BALANCED DB & B LUBRICATED PLUG VALVES API 6D & API 6A
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DOUBLE BLOCK & BLEED PLUG VALVES

Galli&Cassina is a prominent Italian Company mainly involved in the manufacture of a complete range of Lubricated Plug Valves. The company is located in Solaro near Milan (Italy) with extensive offices and workshop covering Galli&Cassina was established in 1919, and it is one of the oldest Italian companies still involved in the manufacturing of valves. At this early stage the business activity was concentrated in the production of valves for domestic and industrial purposes. After the first ten years the company gradually directed its production towards the newly born Chemical industry;...

covers most of the continents with a leading and growing presence in Europe, Middle East, North & South America and Far East resulting in a sales and service networkwith subsidiaries, branch offices and distributors, acquiring a reputation on high quality workmanship as well as on the reliability of its products. Special care is due to the development in every aspect of the Company’s management, complying with the continuous changes, requested by the evolution of the International markets. The proved technical, productive, and financial capabilities combined with the experience of human...

Climax Lubricants22 Fire Safe Test & Available test23 Temperature Conversion Table24 Pressure/Temperature Rating 25 Company Profile Galli&Cassina Products Product Identification System6 Special Features Coating overlay7 Material Selection Guide 8 Plug PTFE Antifriction Treatment Special Features Coating & Overlay10 ANSI Class 150 (PN 20)11 ANSI Class 300 (PN 50)12 ANSI Class 600 (PN 100)13 ANSI Class 900 (PN 150)14 ANSI Class 1500 (PN 250)15 ANSI Class 2500 (PN 420)16 API 6A-2000-3000-5000-1000017 Hydraulic Pressure Test Duration 18 and Pressure Test Tables in Accordance with...

Double Block & Bleed Plug Valve Three -dimensional CAD system and the Finite Element Modelling allow the optimization of every step of valve’s design: • FEM stress calculation of the pressure containing parts (A) • Raw Casting design • Final Assembly Design Ch

Introduction Galli & Cassina is proud to announce a NEW DOUBLE BLOCK & BLEED plug valve series. The addition of this API-6D compliant design is another major contribution Galli & Cassina’s Plug valve line. The Double Block and Bleed valves present similar features as the Galli & Cassina “Single Plug” series. These are marketed with Reduced or Full bore, full conduit, pig-able design. All plug valves are with Standard or Pressure balanced plugs. The Double Block and Bleed valve is developed to meet the industry demand for an alternate to other design where the service often develop problems...

Standard Features: the Pressure Balance System UPPER HOLE LOWER HOLE The operating system of Pressure Balanced Plug Valves (shown in Fig.A) consist in the pressure equalization between the port area and the top/bottom of the plug with two holes. The upper hole connects the plug port area with the top of the plug, while the lower maintains the pressure equalization between the port area and the bottom of the plug. The Pressure Balance System ensure line pressure acts on the plug to reduce the valve torque and avoid the possibility of plug seizure, even after a prolonged time in the open or...

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...

Applicable Standard-Specification Lubricated Plug Valves are designed to use with most refining services according to API 599 or BS 5353 norms whichever is applicable. API 6D norm aims to standardize the materials as well as instructions to manufacture valves suitable for energy transportation in the pipelines. Specification for wellhead BS 1504 and christmas tree equipment. Specification for Steel Casting for Pressure Purposes. Specification for Pipeline BS 2080 Face to Face - Centre to Face - End to End - Steell Valves. BS 5353 BS 6755 part 1 BS 6755 part 2 CSA Z 245....

Standard Features: Plug PTFE Antifriction Treatment Carbon Steel plugs are subjected to the following treatments: A) Case hardening. B) Antifriction treatment. The case hardening has the purpose to increase only the hardness of the plug surface which is subjected to wearing, keeping at the same time the mechanical properties of the base material unchanged. Consequently the base material has more toughness and resistance against impacts. The Antifriction treatment is basically carried out on the plug to obtain the following advantages: Low friction between plug and body. Low torque. Wear...

Top of Stem to Center Line E 180 220 240 250 ----- - - Center Line Valve to CL OperatorT - - - 280 320 370 420 420 420 450 500 Lenght of Wrench L 450 500 750 - -- -- -- - Size of Bleed Connection MSS SP 45 1/2” 1/2” 1/2” 1/2” 3/4” 3/4” 3/4” 1” 1” 1” 1” Other size upon request CORPORATE CtKiu

Center Line Valve to CL OperatorT - - - - 330 370 430 445 450 490 540 Lenght of Wrench L 500 750 750 - -- -- -- - Size of Bleed Connection MSS SP 451/2” 1/2” 1/2” 1/2” 3/4” 3/4” 3/4” 1” 1” 1” 1” Face to face not in accordance with API 6D - ASME B16.10 Other size upon request