Steel Valves

We design and manufacture forged mechanical joints, standard and special forged valves in an extensive range of designs, materials, sizes and pressure classes all compliant to international standards.

In collaboration with our customers we design and provide solutions to their particular needs.

Valvole galperti

G-Blok® Valves

Galperti Engineering G-BLOK® range of standard and special valves includes double block and bleed valves, API valves and slimline compact monoflanges.

Specific for oil and gas, petrochemical and power generation industry, G-BLOK® valves are custom designed to fulfill project applications and specifications: for pipeline or instrumentation, topside or subsea/deep sea, high or low temperature, corrosive or hazardous fluids.

G-BLOK® valves’ design include specific features developed along the years, and widely laboratory and field tested.

All G-BLOK® valves are in-house forged, and are available in all materials


G-Blok® Double Block & Bleed Valves / Ball for process

Sizes from ½” to 24”

  • Pressure class from 150# to 2500#
  • Pressure class from 2000 PSI to 15000 PSI

G-Blok® Double Block & Bleed Valves / Ball / Gate / Needle / Monoflange for instrumentation

Sizes from ½” to 3”

  • Pressure class from 150# to 2500#
  • Pressure class from 2000PSI to 15000 PSI

API6D/ API 6DSS / API 6A Ball Valves / Subsea Ball Valves

Sizes from ½” to 48” class 900#

Sizes from ½” to 36” class 1500#

Sizes from ½” to 24” class 2500#

Sizes from ½” to 13.5/8” class 10000 PSI

Sizes from ½” to 7.1/16” class 15000 PSI

G-Lok® Clamp Connectors

G-LOK® Clamp Connector is a fully proven alternative to the conventional flanged connection used throughout the oil, gas, petrochemical and power generation industries. Produced in a comprehensive range of sizes and materials they offer versatility, compactness, weight saving and cost effectiveness in connecting piping system.

G-Lok® Clamp Connector is designed to meet ANSI B 16.5, ASME VIII, API 6A/Q1 and other design codes.

The design has the approval of Lloyds, DNV and Stoomwezen. Fully fire tested in accordance with API 6FB parts 1 and 2, and gas tested to meet all aspects of ASME B31.3 Chapter IX (e.g. 1400 bar at 180°C Gas test with applied bending moment).

G-Lok® Clamp Connectors offer:

  • Easy Assembly
  • Compact Construction
  • Reduced Weight
  • Metal to metal sealing technology – re-usable
  • Flexibility
  • Full Design approval