GLOBE VALVES

EXPERT make Globe valves are tight sealing, easy operation, and regulation valves for liquid and gaseous fluids over a wide range of line pressures and temperatures. These valves are linear motion valves and are primarily designed to stop, start and regulate flow.

Globe valves are of outside screw & Yoke (OS & Y) and with Bolted Bonnet Construction. The outside screw ensures easy lubrication and prevents corrosion and erosion by line fluids. The disk of a Globe valve can be totally removed from the flow path or it can completely close the flow path.

Constructional Details

BODY AND BONNET

The body is designed for strength to meet the operating conditions and contoured to minimize erosion and resistance to flow. The bonnet is provided with renewable back seat arrangement.

DISC & STEM

The disc provides sealing on a taper seat over a wide range of differential pressures. As the seating between disc and body seat is a narrow line contact, tight sealing can be achieved even if any foreign particle gets stuck to the seating area. The disc and stem are held together by a disc nut with allowance for disc to swivel. The disc nut is tack welded to prevent loosening in service.

BODY & SEAT RINGS

The seat ring is seal welded to provide a bubble tight joint. On request the seat surface can be covered also with stellite, which provides increased resistance to wear, abrasion and erosion of the sealing surface.

PACKING

The standard packing is made of five or more pure graphite rings with square / rectangular section. The graphite is always treated with special corrosion inhibitors to prevent the corrosion of ferrite stainless steel stem due to galvanic cell action.

GASKETS

The standard gasket is in pure graphite stainless steel reinforced. This type of gasket is suitable for many different applications.

BACK SEAT ARRANGEMENT

Back seats provide a seal between the stem and Bonnet & it is designed to relieve back pressure on the stem packing when fully seated.

GLAND ARRANGEMENT

The stuffing box holds adequate rings to enhance gland tightness and increases the life of packing rings.

ACCESSORIES

Valves can be supplied with special requirements like Extended Stem, Chain Wheel arrangement, Drain Plug, locking arrangement and By Pass arrangement.

Typical Applications Are

Water | Chemicals | Petrochemicals | Steam | Filtration System | Food & beverage | Oil & Gas Industries etc

Size Ranges

#150	DN 15 up to DN 300
#300	DN 15 up to DN 300
#600	DN 50 up to DN 200

Technical Data | Design Features

Design Standard	BS-1873
Testing Standard	API598
Pressure/Temperature Rating	ASME B 16.34
Face to Face Dimensions	ASME B 16.10
End Connection	Flanged as per ASME B 16.5, Butt Weld as per ASME B16.25
Operation	Hand wheel, Gear, Electric actuator.
Material	ASTM A216 Gr.WCB / ASTM A351 Gr.CF8 / CF8M

On request valves can be supplied with special testing requirements like Helium Leak testing, NACE requirement, Radiography, Magnetic Particle test, IGC test.

Valves can also be offered with IBR certification.

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