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G-Blok Valves
G-Blok® – Compact Modular Valves

G-Blok® – Compact Modular Valves

G-Blok® TF and TT Modular Top Entry Construction valves and SF – ST Side Entry valves replace conventional bulky assemblies with their numerous leak paths with valves built on a modular principle offering reduced weight and space and less potential for leaking. The Galperti Engineering SF and ST Modular valves, with their Side Entry Construction,...
G-Blok® – Trunnion-Mounted Ball Valves

G-Blok® – Trunnion-Mounted Ball Valves

The term “trunnion-mounted” describes a ball valve design where the ball is fixed in the plane of the axis of rotation and where the seats are free to move laterally towards the ball sealing surface to effect a leak tight seal. The movement of the seats is by a combination of flow forces, of pressure...
G-Blok® – Double Block & Bleed Valves

G-Blok® – Double Block & Bleed Valves

Double Block and Bleed valves have evolved to replace the process of bolting together individual valves to provide dual isolation. This assembly provides great savings in weight, space and installation times especially in instrument or instrument cage isolation. These savings can be as much as 60% in weight and studies have shown that a 70%...
G-Blok® –Fully Welded Body Subsea Design Trunnion-Mounted Ball Valves

G-Blok® –Fully Welded Body Subsea Design Trunnion-Mounted Ball Valves

The Galperti Subsea Design standard is a side-entry, bolted bonnet, trunnion-mounted, metal-seated design, suitable for subsea installation. The Top Entry and Fully Welded designs are also available with features suitable for subsea service. The valve is designed for deepwater subsea installation and operation. All valve components, including gaskets are selected for specific service conditions. All...
G-Blok® –Side Entry Body and Closure Trunnion-Mounted Ball Valves

G-Blok® –Side Entry Body and Closure Trunnion-Mounted Ball Valves

The body is made of three forged parts and the bolted construction allows ease of disassembly on the job site in the event repairs or maintenance is needed. The bolts threads are as per ISO metric or ANSI imperial, depending on client specification. The tightening of the bolts is made by hydraulic tools with a...
G-Blok® –Top Entry Body and Closure Trunnion-Mounted Ball Valves

G-Blok® –Top Entry Body and Closure Trunnion-Mounted Ball Valves

The body to bonnet joint is designed in accordance with ASME VIII Div. 1. The body thickness design is in accordance with ASME B16.34. The resulting overall body and bonnet structure and closure interface is generous in size thus allowing for a wide selection of gasket types and sealing configurations to meet severe operating parameters...
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