Forged globe valve Class 800 - G800 | ICP Valves

Forged Globe Valve ICP G800 Class 800

The ICP G800 is a forged globe valve, Class 800, designed for small DN in steam, condensate, water, air, oil, and compatible industrial fluid lines. The product page lists it as a bi-directional valve, but for applications requiring critical sealing under differential pressure, installation direction should be confirmed via datasheet or project drawing.

Construction and Connections

• Sizes: ½"–2" / DN15–DN50.
• Pressure class: ANSI Class 800.
• Connections: NPT per ANSI B1.20.1 or socket weld per ANSI B16.11.
• Body/Bonnet Materials: ASTM A105 or ASTM A182 F316L.
• Packing: flexible graphite + carbon fibre.
• Operation: handwheel.

Trim and Sealing

In the carbon steel version, the trim includes AISI 420 + Stellite disc, A105 + Stellite seat, and AISI 410 stem. The stainless steel version uses A182 F316L, with F316L + Stellite seat. Stellite is beneficial for steam or fluids with increased seat wear but does not replace a filter when particles are present in the medium.

Standards and Documentation

The PDS indicates design per BS 5352 / ASME B16.34, testing API 598, pressure test EN 12266-1, marking EN 19, and ISO 9001. The commercial page mentions API 602; this discrepancy should be confirmed upon ordering. An EN 10204 2.2 certificate is available, referencing PED 2014/68/EU and ATEX Group II Cat. 2.

Application Selection

A105 is commonly used for steam, water, and general carbon steel services. F316L is preferred when a stainless steel body is required due to fluid or environmental conditions. The pressure-temperature chart shows A105 operation from approximately -29 to 425°C and F316L from -50 to 450°C, with pressure reduction as temperature increases.

FAQ

Is it a control valve?

Primarily an isolation globe valve. Limited throttling requires control of ΔP, velocity, noise, and seat wear.

What is checked during maintenance?

Packing, gland flange, seat sealing, handwheel condition, and potential leakage from bonnet gasket.