GVS® Trunnion Mounted Metal Seated Ball Valves

Guide Valve Limited, established in 1980 with it’s headquarters In ontario, Canada , specializes in the manufacturing of valves. We are manufacturer of the trademark brands such as , GVS®, VCI®, Lowe & GVS®-Malema. Our products are based on the most advanced technologies and are used in all sectors from petrochemical refining, process to transportation and distribution of the end product. GVS valves are designed , manufactured & tested according to API 6D, API 6A and CSA Z245.15 and available to 608 . The GVL organization gas achieved SIL 3 Certification by an independent 3rd party agency . Our standard product design of Series B & GB are of the trunnion mounted, bolted body forged type ball valves.

DESIGN FEATURES

DESIGN FEATURES LIST

- Bolted body type 3 pieces
- Trunnion mounted, double block and bleed
- Full and reduced bore
- All forged steel components
- Double piston effect, self relieving seats, or combination of the two seat designs
- Firesafe certified anti-static devices
- Anti-blow out stem design per API 608
- Anti-static devices
- Firesafe Certified to API 607, API 6FA and fugitive Emission certified
- Emergency grease stem sealing
- Emergency grease Seat-to-Ball sealing availble
- Optional shut-off ratings

SEAT TO BODY SEALING OPTIONS:

Graphite
O-ring with back-up rings
DPE spring energized lip-seal
SPE spring energized lip-seal
Chevron® V-ring packing - SPE
Chevron® V-ring packing with metallic ring - DPE
Elastomeric O-ring
DPE shuttle with elastomeric o-rings
Elastomeric O-ring loaded U-seal

UP TO °240+C (°464F)

UP TO °350+C (°662F)

COATING OPTIONS

SIXEAL® is recommended onto our GVS® Trunnion Mounted Metal to Metal Ball Valves where high resistance to abrasion, corrosion and wearing are required. For example, in slurry and sandy environments SIXEAL® is a viable alternative to HVOF coating.

SIXEAL® Technology:

Micro-particles of silicon carbide are added into the ENP bath to obtain a final plating in which incorporated sub-particles are evenly distributed all over the treated surfaces. The result is a homogeneous hard-faced element strongly incorporated in a nickel matrix, matching the hardness properties of silicon and the chemical resistance of ENP. This uniquely developed process is based on electroless nickel plating procedure. SIXEAL® coating thickness is maintained equally all over the coated surfaces, “complete ball”. This process eliminates any further grinding or machining of the ball’s outer surface.

Fugitive Emission / Firesafe Certified

ISO 15848-1

ENDURANCE CLASS CO3 TIGHTNESS CLASS AM

+200°C

API STANDARD 641

+240°C

API STANDARD 641

ISO 15848-1

ENDURANCE CLASS CO2 TIGHTNESS CLASS CH

+350°C

Note: Higher temperature design is available upon request

RECESSED BALL FEATURE

TWO COMMON PROBLEMS WITH BALL VALVES THAT HANDLE CORROSIVE AND EROSIVE MEDIA

BALL PITTING

When the valve is in closed position, the upstream face which is exposed to the corrosive gases and fluids tend to pit the area go the ball bounded by the valve seat, causing the critical smooth surface finish to become rough . Because the ball is fitted with zero clearance to the seats, any roughness or protrusions caused by corrosive or erosive attack will damage the valve seats during the rotation of the ball , once the seats are damaged , effective sealing is lost . Continued cycling increases the seat damage.

FLUID DEPOSITS

Valves that handle fluids and gases that tend to deposit crustations, or leave residue on the inner valve surfaces, will become hard to operate. With the ball valve in the closed position for lengthy time periods, the build-up of deposits adheres to the ball face within the seat boundaries, causing interference with the valve seats during attempts to cycle the valve. Only a few thousandths deposit on the ball face will increase turning torque and damage seats. Excessive crustations or residue on the ball face will make the valve inoperative.

ADVANTAGES OF A VALVE WITH THE RECESSED BALL FEATURE

Debris build-up on ball surface doses not come into contact with the seat surface
Longer valve in-service life
Less contact area between ball and seats
Lower valve running torque

Other Metal to metal products we manufacture

VCI - 201M Series

Metal to Metal seated , 3 pieces bolted body ball valve in 1/2" to 4", in NPT,SW,BW & RF flanges with temperature range up to + 350ºC (+662ºF).

VCI -F200M Series

Metal to Metal seated ball valve in 1/2 to 12" of ANSI Class 150 to 2500,RF Flanged, Fill Ported, Bolted Body style with Temperature to +350ºC (+662ºF).

Lowe Valve Series

The Lowe valve design offers an unique quarter turn rotary wedge action, metal to metal seated valve which provides bubble tight shut-off performance.Features such as non-lubricated, low torque, quarter turn operation, multiple wear compensation adjustements, bach seatin, and economocal quarter turn actuator compatibility are an integral part of this valve. the lowe valve is proven high pressure, high temperature valve to +649ºC (+1,200ºF). Availble in carbon Steel and stainless Steel construction with Threaded,Socket-weld,butt-weld or Flanged Ends to ANSI Classs 900 And to sizes of 2"