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The GKPV Series Metal Sealed Ball Valve is a high-performance, metal-seated valve designed for demanding industrial applications that require precise shutoff, high pressure resistance, and long service life.
Manufactured with a forged steel body and precision-engineered internal components, this valve ensures exceptional durability and sealing integrity even under extreme temperatures and pressures.
Its robust mechanical design, advanced seat structure, and integrated stem locking mechanism make it ideal for industries such as oil & gas, petrochemical, power generation, and refining.
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GKPV Series Hard Sealed Ball Valve – High-Performance Metal Seated Design for Extreme Pressure & Temperature
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Size Range DN15 to DN600 (½" to 24"), other custom sizes available |
Body Material Forged Carbon Steel / Stainless Steel (A105, F304, F316, F51) |
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Temperature Range -29°C to +600°C (-20°F to +1112°F) |
Stem Material Stainless Steel (410 / 17-4PH / 316SS) with anti-wear or low-friction coating |
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Maximum Allowable Working Pressure ASME Class 1500 / 3100 / 4500 (depends on material and size) |
Seat & Sealing Surface Metal-to-metal sealing with HVOF Chromium Carbide or Inconel 718 coating |
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Stem Design Double-key stem with anti-blowout structure, precise actuator alignment |
Packing & Gland Deep stuffing box with Chesteron 0.125" packing and dual anti-extrusion rings |
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Coating Type HVOF metallurgically bonded coating (standard for Class 3100/4500, optional for Class 1500) |
Operation Method Manual (Lever / Gear), Pneumatic, Hydraulic, or Electric Actuated |
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Special Design Features Integrated locking device on handle, mechanical stop block for accurate rotation, forged mounting flange, integral thrust-bearing stem, enlarged packing space for easy maintenance |
End Connection Standards Socket Weld: ASME B16.11 |
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Design & Manufacturing Standards ASME B16.34, MSS SP-101, API 598 / ISO 5208 Testing, NACE MR0175 (optional) |
Applications Oil & Gas pipelines, Petrochemical plants, Power generation, Refining units, Steam lines, and High-temperature process systems |
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Testing & Inspection Pressure and leakage test per API 598 / ISO 5208 |
Key Highlights High sealing integrity under high pressure & temperature, corrosion and wear resistant, precise actuator alignment, easy maintenance, long service life |
The GKPV Series Hard Sealed Ball Valve is designed for high-temperature,
high-pressure, and abrasive service conditions, where conventional soft-
seated valves cannot perform reliably.
This metal-seated valve provides tight shutoff, excellent wear resistance, and
long operational life in demanding applications such as oil & gas pipelines,
refinery systems, chemical plants, and power generation units.
Its forged steel body, precision-engineered stem, and HVOF-coated sealing
surfaces ensure consistent performance even under cyclic thermal and
mechanical stress.
The valve design combines high mechanical strength, stable actuator mounting,
and a durable sealing structure that maintains integrity through extreme service life.
- Locking Device on Handle Joint – Provides precise open/close positioning and ensures safe operation.
- Mechanical Positioning with Adjustable Stop Screws – Actuator torque is transmitted directly through the stem to the stop block, guaranteeing accurate ball rotation and preventing actuator misalignment.
- Integrated Mounting Flange – Ensures stable actuator installation with no looseness or offset between the support bracket and valve body.
- Double-Key Stem Design – Enables reliable and convenient connection with gearboxes, pneumatic, hydraulic, or electric actuators.
- Stem Bushing with Anti-Wear Coating – Prevents stem blowout and provides radial alignment for smooth operation.
- Single Alignment Mark – Machined on the stem and gland to indicate accurate ball position and flow direction.
- Two-Piece Gland with Live-Loaded Springs – Maintains seal integrity while allowing sufficient adjustment clearance. Corrosion-resistant 316SS bolts and nuts with anti-friction coatings and Inconel alloy springs are standard.
- Machined Gland Sleeve – Provides continuous tight connection between stem
and packing chamber, preventing extrusion and maintaining alignment.
- Deep Stuffing Box Design – Fitted with Chesteron 0.125” packing and dual anti-
extrusion rings for reliable long-term sealing.
- Metal Anti-Extrusion Rings – Further reduce packing deformation under high pressure.
- Integral Neck Body Design – Protects the valve during post-weld heat treatment (PWHT).
- Downstream Shoulder and Radiant Fins – Dissipate heat effectively and mark the
heat-band boundary during PWHT.
- Proven Interference-Fit Seat Design – Up to ASME Class 1500 (410SS/HVOF CrC),
and up to Class 3100/4500 (Inconel 718/S&F CrC).
- Enlarged Ball Port – Allows for rapid thermal expansion without exposing seat
surfaces to the medium, extending seat life.
- Matched Ball and Seat Materials – Same substrate and coating to ensure
identical thermal expansion rates and reliable sealing.
- Forged Valve Body – Provides superior pressure resistance and mechanical
strength.
- Extended Packing Area – Facilitates easy packing adjustment and
replacement while maintaining accurate stem alignment.
- Integral Thrust Bearing Stem – With anti-wear coating and clear
open/close markings, supports high axial loads without deformation.
- Precision-Fitted Stem Connection – Engages securely within the
support flange bore for enhanced stability.
- Adjustable Handle – Can be positioned along its length, used
as a T-type handle, or reversed downstream in limited space;
standard maximum length up to 24".
* Flow Direction Arrow forged directly on the valve body — visible even
after insulation.
* Meets ASME B16.34 performance and pressure standards.
* Socket weld ends conform to ASME B16.11.
* Butt weld ends available with plain or customer-specified bevel ends.
* Actuator mounting per MSS SP-101 standard.
* HVOF Spray Coating (metallurgically bonded) standard for ASME 3100/4500 valves; optional for ASME 1500 class.
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The GKPV Series Metal Sealed Ball Valve is a high-performance, metal-seated valve designed for demanding industrial applications that require precise shutoff, high pressure resistance, and long service life.Manufactured with a forged steel body and precision-engineered internal components, this valve ensures exceptional durability and sealing integrity even under extreme temperatures and pressures.Its robust mechanical design, advanced seat structure, and integrated stem locking mechanism make it ideal for industries such as oil & gas, petrochemical, power generation, and refining.
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The GKBV Series Metal Seated Ball Valve With HVOF Coating is engineered for high-performance and severe service conditions. Featuring advanced HVOF coating technology, these valves provide excellent wear resistance, corrosion protection, and long-term reliability in high-pressure, high-temperature, and abrasive applications. With GEKO’s precision engineering and coating expertise, the GKBV Series ensures tight sealing performance, extended service life, and superior durability, making it the ideal choice for power plants, chemical processing, and oil & gas industries.
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