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Stonehill Valves – Knife Gate & Segmented Ball Valves Catalog
Interactive product catalog for Stonehill knife gate valves and segmented ball valves.
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Heavy Duty Slurry Knife Gate Valves
Stonehill GKS / GKW
Heavy duty knife gate valves for severe slurry service with bubble-tight isolation.
Stonehill GKS / GKW heavy duty slurry knife gate valve

Design Features

  • 100% isolation, bubble-tight shut-off resulting in zero downstream leakage.
  • Double seated, bidirectional flow and shut-off for slurry lines.
  • No seat cavity where solids can collect and hinder gate closure.
  • No metal parts in contact with the flowing slurry to minimize wear.
  • Adaptable frame (support yoke) can be modified to air cylinder, hydraulic or bevel gear in the field without welding.
  • Open-closed lockout brackets available for each valve size.
  • Splash control and drain plate options for improved safety.
  • Long lasting lubrication and robust, epoxy-coated body.

Technical Data

TypeStonehill GKS / GKW Heavy Duty Knife Gate Valve
Size 2"–16"Working pressure 150 psi
Size 18"–28"Working pressure 90 psi
Seat materialNatural gum rubber as standard, optional EPDM
Knife materialSS316 as standard
Working temperatureNR up to 70°C, EPDM up to 110°C
Flange drillingsPN10 / Class 150 / AS2129
OperationHandwheel, pneumatic, hydraulic, electric, bevel gear
Flange Ends Slurry Knife Gate Valve
Stonehill GKA
Flanged slurry knife gate valve for abrasive and corrosive applications in severe service.
Stonehill GKA flange ends slurry knife gate valve

Design Features

  • Valve design meets abrasion and corrosion working conditions in slurry systems.
  • Flanged ends for robust pipeline integration and easy alignment.
  • Removable sleeves for quick maintenance and replacement.
  • Open-closed lockout brackets available for each valve size.
  • Dust cover as standard for pneumatic or hydraulic operation.
  • Epoxy powder coating – fusion bonded paint for extended external protection.

Technical Data

TypeStonehill GKA Flange Ends Slurry Knife Gate Valve
Size range2"–24" (DN50–DN600)
Working pressure100 psi for 2"–24", 75 psi for 26" and above
Body materialsGGG40 / CF8 / CF8M / ALLOY
Knife materialSS316 as standard
Seat materialNatural rubber as standard, optional EPDM
Working temperatureNR up to 70°C, EPDM up to 110°C
Flange drillingsPN10 / Class 150 / AS2129
OperationHandwheel (GKA43), pneumatic (GKA643), electric, hydraulic
Slurry Knife Gate Valve – Luxury Performance
Stonehill DK Series
Soft-seated full-bore slurry knife gate valves with zero leakage and advanced maintenance features.
Stonehill DK Series slurry knife gate valve

Design Features

  • Conical gate head with strong cutting force for dense slurry and solids.
  • Gate with precision grinding and hard chromium plating for wear and corrosion resistance.
  • Built-in packing box design for easier packing sealing and fast maintenance.
  • Two-piece body structure eliminating gaps between body and gate to avoid particle jamming.
  • Die-cast rubber seat with metal support ring to prevent deformation during long-term service.
  • Interchangeable sealing seats for flexible seat material selection.
  • Detachable bottom cover for cleaning residual particle media inside the valve chamber.

Technical Data

TypeStonehill DK Series Slurry Knife Gate Valve (Luxury Performance)
Nominal diameterDN50 ~ DN700
Nominal pressure1.0 MPa, 1.6 MPa, 2.5 MPa, 150 LB
Design standardMSS SP-81, JB/T8691-1988
Face-to-faceMSS SP-81
Working pressure0 ~ 10 bar
Air pressure0.4 ~ 0.7 MPa
ConnectionLug type
Working temperature-29°C ~ +120°C (depending on elastomer)
MediumSlurry
Leakage rateZero
Seat optionsNitrile rubber, EPDM, Natural rubber
Heavy Duty Knife Gate – Bevel Gear
Stonehill GKS573 Bevel Gear
Stonehill GKS wafer style heavy duty knife gate valve equipped with bevel gear operation.
Stonehill GKS573 bevel gear heavy duty knife gate valve

Design Features

  • Bevel gear operated version of the Stonehill GKS heavy duty knife gate valve.
  • Suitable for isolating slurry with controlled manual torque.
  • Maintains 100% isolation and bubble-tight shut-off characteristics of the GKS design.
  • Double seated, bidirectional flow and shut-off.
  • No seat cavity where solids can collect.
  • No metal parts in contact with the flowing slurry.
  • Unobstructed port minimizing pressure drop across the valve.

Technical Data

TypeStonehill GKS573 Heavy Duty Knife Gate Valve – Bevel Gear
Series baseStonehill GKS / GKW heavy duty knife gate valves
Flange drillingsPN10 / Class 150 / others on request
Size rangeDN100–DN600 (typical range, larger sizes on request)
OperationBevel gear actuator, optional conversion to pneumatic or hydraulic
ApplicationsMining, phosphorus ore, power, chemical, pulp & paper, steel, cement
Unidirectional Knife Gate Valve
Stonehill GKU
Unidirectional knife gate valve for dry and wet media such as pulp, sludge, biomass and granulates.
Stonehill GKU unidirectional knife gate valve

Design Features

  • Stonehill GKU based on Guanli unidirectional knife gate valve design for reliable slurry isolation.
  • Monoblock body with fusion bonded epoxy coating for corrosion protection.
  • Stem protector and position indicator for safe and visible operation.
  • Support yoke compatible with manual, pneumatic, electric and hydraulic actuators.
  • Knife gate design suitable for dry or wet media such as pulp stock, sludge, biomass and waste.
  • Replaceable seat system for easier maintenance and seat material changes.

Technical Data

TypeStonehill GKU Unidirectional Knife Gate Valve
Flange drillingsPN10 / Class 150 / JIS 10K / AS2129
MaterialsGGG40, CF8, CF8M, special alloys
Seat typesRubber seat, metal seat (high performance seat system)
OperationRising stem handwheel (GKU73), non-rising stem (GKU75), pneumatic (GKU673), electric (GKU973)
Typical mediaPulp stock, sludge, biomass, ash, granulates and industrial waste
High Performance Knife Gate Valve
Stonehill GKO
High performance knife gate valve for demanding slurry and process applications.
Stonehill GKO high performance knife gate valve

Design Features

  • Stonehill GKO design based on Guanli high performance knife gate valve.
  • Seat system designed for high performance and easy removal for seat replacement.
  • Available sealing configurations: rubber seat and metal seat depending on service.
  • Monoblock body with fusion bonded epoxy coating for long-term corrosion protection.
  • Stem protector, position indicator and robust support yoke.
  • Suitable for a wide range of dry and wet media including abrasive slurries.

Technical Data

TypeStonehill GKO High Performance Knife Gate Valve
Flange drillingsPN10 / Class 150 / JIS 10K / AS2129
MaterialsGGG40, CF8, CF8M, special alloys
Seat typesHigh performance rubber seat, metal seat
OperationHandwheel, pneumatic, electric, hydraulic; rising stem, non-rising stem, full lug versions
ApplicationsDemanding slurry and process services requiring enhanced seat performance
Bidirectional Knife Gate Valve
Stonehill GKB Series
Bidirectional knife gate valve with U-shape seat and epoxy coated monoblock body.
Stonehill GKB bidirectional knife gate valve

Design Features

  • Stonehill GKB based on Guanli bidirectional knife gate valve series.
  • Monoblock body with U-shape seat providing bidirectional sealing.
  • Stem protector and indicator for safe operation feedback.
  • Support yoke suitable for manual, pneumatic, electric and hydraulic actuation.
  • Fusion bonded epoxy coating for enhanced corrosion resistance.
  • Designed for slurry and general industrial media requiring bidirectional shut-off.

Technical Data

TypeStonehill GKB Bidirectional Knife Gate Valve
Flange drillingPN10
Body materialGGG40
OperationRising stem handwheel (GKB73), pneumatic (GKB673), electric, hydraulic
Seat typeU-shape elastomer seat for bidirectional sealing
ApplicationsSlurry and industrial processes where flow direction may change
Through Conduit Knife Gate Valve
Stonehill GKT Series
Through conduit knife gate valve with split body and high performance seat structure.
Stonehill GKT through conduit knife gate valve

Design Features

  • Stonehill GKT based on Guanli through conduit knife gate valve design.
  • Split body construction for easier maintenance and precise alignment.
  • Through-going knife for full bore opening and effective isolation.
  • High performance seat structure designed for bi-directional zero leakage shut-off.
  • Suitable for high pressure and severe slurry applications.

Technical Data

TypeStonehill GKT Through Conduit Knife Gate Valve
Flange drillingsPN10 / 150LB / JIS 10K / Table D
MaterialsGGG40, CF8, CF8M, special alloys
OperationHandwheel, pneumatic, electric, hydraulic; bevel gear (GKT573), pneumatic (GKT673)
SealingBi-directional zero leakage design
ApplicationsHigh pressure slurry, pipelines requiring full bore opening and tight shut-off
Bidirectional Knife Gate Valve
Stonehill GKJ Series
Compact bidirectional knife gate valve with maintenance-free cross seal and self-cleaning design.
Stonehill GKJ bidirectional knife gate valve

Design Features

  • Stonehill GKJ based on Guanli bidirectional GKJ knife gate valve series.
  • Split body with flat gate and light torque for smooth operation.
  • Maintenance-free compact cross seal (double seal lip profile) for tight shut-off, adjustable without process interruption.
  • Self-cleaning effect achieved by flush-out corners in the body and cutting edge underneath the gate.
  • Solids and fibres are cut before tightening against the elastic seat.
  • Gate guidance interrupted on the stroke length so dirt can be ejected.
  • Lateral gate guidance prevents gate flutter in both flow directions and throttle positions.

Technical Data

TypeStonehill GKJ Bidirectional Knife Gate Valve
Flange drillingsPN10 / Class 150 / JIS 10K / AS2129
MaterialsGGG40, CF8, CF8M, special alloys
OperationRising stem handwheel (GKJ73), pneumatic (GKJ673), electric, hydraulic
SeatElastic seat integrated in the body, chambered and pre-stressed
ApplicationsSlurries with solids and fibres in both flow directions requiring reliable bidirectional sealing
Segmented Ball Valve – Wafer Type
Stonehill GVU Wafer
V-port segmented ball valve for accurate control in compact wafer design.
Stonehill GVU wafer type segmented ball valve

Design Features

  • Stonehill GVU wafer type based on Guanli V-port segment ball valve series.
  • Integral body construction for robustness and reduced leakage paths.
  • V-port ball segment providing accurate control over a wide range of flows.
  • Durable metal seat option for severe service and high cycle applications.
  • Available seat designs: metal seat, PTFE seat, high temperature seat and bidirectional metal seat.
  • Quarter-turn design suitable for fast actuation with pneumatic or electric actuators.

Technical Data

TypeStonehill GVU Wafer Type Segmented Ball Valve
Valve typeWafer type 1"–10" (DN25–DN250)
Flange drillingsEN1092 PN10/PN16/PN25, ANSI 150LB / 300LB
Body materialsWCB, CF8, CF8M, special alloys
OperationManual, pneumatic, electric, hydraulic (ISO top for actuators)
Typical serviceControl of liquids, slurries and gases requiring precise throttling
Segmented Ball Valve – Flange Ends
Stonehill GVU Flanged
Flanged V-port segmented ball valve for high performance flow control.
Stonehill GVU flange ends segmented ball valve

Design Features

  • Stonehill GVU flanged design derived from Guanli segmented ball valve GVU series.
  • V-port segment ball for precise flow modulation and excellent control characteristics.
  • Integral flanged body construction to facilitate installation and alignment.
  • Durable seat options including metal seat, PTFE seat and high temperature seat.
  • Suitable for both on/off and control service in demanding industrial applications.

Technical Data

TypeStonehill GVU Flange Ends Segmented Ball Valve
Valve typeFlange type 1"–24" (DN25–DN600)
Flange drillingsEN1092 PN10/PN16/PN25, ANSI 150LB / 300LB
Body materialsWCB, CF8, CF8M, special alloys
OperationManual, pneumatic, electric, hydraulic
Seat designsMetal seat, PTFE seat, high temperature seat, bidirectional metal seat