Sự miêu tả
API 600 Rising Stem Gate Valve Technical Data Sheet
(Hard Seat / Coal Tar Epoxy Coated)
Product Name: API 600 Bolted Bonnet Rising Stem Gate Valve (OS&Y)
Model: Z41H/Y – Class 150Lb ~ 600Lb
Date: February 16, 2026
- Product Overview
This valve features an Outside Screw and Yoke (OS&Y) rising stem design. It is strictly designed according to API 600 (the benchmark standard for steel gate valves) and ASME B16.34 for pressure-temperature ratings. The disc and seat feature a hard-face seal (metal-to-metal ground fit), making it suitable for high-temperature, high-pressure, and erosive media. The external surface is protected by a Coal Tar Epoxy coating, providing exceptional resistance to soil corrosion and saline environments. It is particularly recommended for buried pipelines, marine terminals, and petrochemical refining projects.
- General Technical Specifications
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Item
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Đặc điểm kỹ thuật
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Loại van
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Bolted Bonnet, Outside Screw and Yoke (OS&Y), Rising Stem Gate Valve
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Nominal Size (NPS)
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2″ ~ 24″ (DN50 ~ DN600)
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Pressure Class
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Class 150 / Class 300 / Class 600
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Structure Style
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Rising Stem, Solid Wedge / Flexible Wedge
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Connection Type
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Flanged Ends (ASME B16.5 RF / RTJ)
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Phạm vi nhiệt độ
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-29°C ~ +425°C (-20°F ~ +800°F) for Carbon Steel
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Applicable Media
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Water, Steam, Oil, Natural Gas, Corrosive Fluids
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Design Standard
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API 600 (Steel Gate Valves)
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Face-to-Face Dimension
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ASME B16.10
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Pressure Testing
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API 598
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- Material of Parts Specification
Note: The following is a typical carbon steel configuration (suitable for Coal Tar Epoxy coating). Alloy steel can be selected based on service conditions.
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Part Name
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Material / Grade
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Material Properties & Application
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Thân hình
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Carbon Steel (ASTM A216 WCB)
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Good strength and weldability. Substrate for the Coal Tar Epoxy coating.
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Bonnet
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Carbon Steel (ASTM A216 WCB)
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Same material as body to ensure galvanic compatibility.
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Wedge (Gate)
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Carbon Steel with Hardfacing (Stellite 6/21)
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Sealing surface overlaid with hard alloy for high hardness and erosion resistance.
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Seat Ring (Sealing Face)
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Hardfacing (Stellite 6/21) or Integral Machined Surface
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Ground metal-to-metal hard seat, achieving zero or low leakage standards.
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Thân cây
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Stainless Steel (ASTM A182 F6a / F304)
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High strength and corrosion resistance. F6a typically requires chrome plating to reduce friction.
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Stem Nut
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Aluminum Bronze (C95400) / Ductile Iron
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High strength, self-lubricating, prevents stem galling.
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Packing
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Flexible Graphite
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High-temperature resistance, self-lubricating, reliable sealing.
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Gasket
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Spiral Wound Gasket (SS+Graphite) / Solid Metal Ring (RTJ)
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Ensures leak-proof sealing under high temperature and pressure.
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External Coating
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Coal Tar Epoxy
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Specifically for heavy-duty anti-corrosion. Superior water resistance, chemical resistance, and cathodic disbondment resistance. Ideal for buried or underwater pipelines.
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- Coal Tar Epoxy Coating Specifications
- Applicable Standard: SSPC Paint 20 / NACE No.12 / Corporate Heavy-Duty Specification
- Coating Type: High-build Coal Tar Epoxy
- Surface Preparation: Abrasive blast cleaning to Sa 2.5 (Near-White) , surface roughness 40-75μm
- Coating Thickness:
- Dry Film Thickness (DFT): ≥ 300 μm (Reinforced grade 500-800μm available upon request)
- Typically applied as a multi-coat system (primer + intermediate + top coat)
- Characteristics: Resistant to saltwater immersion, microbiologically influenced corrosion (MIC), cathodic disbondment, and has strong impermeability.
- Main Technical Characteristics
- Rising Stem (OS&Y) Design: The stem rises and lowers with the wedge. The valve opening position is visually indicated by the stem position relative to the yoke.
- API 600 Heavy-Duty Design: Conforms to API 600 requirements, including minimum wall thickness, bonnet thickness, stem diameter, and seat ring dimensions, ensuring robustness and long service life.
- Hard-Face Seat Design: The sealing surfaces of the wedge and seat are overlaid with hard alloy (e.g., Stellite) . This hardened surface maintains reliable sealing even in media containing solid particles.
- Flexible Wedge Option: For Class 300 and above, or for larger diameters, a flexible wedge design compensates for thermal distortions and prevents jamming.
- Coal Tar Epoxy Heavy-Duty Coating: This coating is the preferred anti-corrosion solution for buried and marine services. It effectively isolates water, oxygen, and ionic penetration.
- Backseat Design: Allows for repacking under pressure (online maintenance).
- Principal Dimensions & Connection Data (Reference for Class 150 RF)
Note: Final dimensions subject to approval drawings. Conforms to ASME B16.10.
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NPS
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Face-to-Face L (mm)
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Flange Diameter D (mm)
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Bolt Circle Diameter K (mm)
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No. of Bolt Holes n
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Hole Diameter d (mm)
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Approx. Height H (Open) (mm)
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2″
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178
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152
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120.5
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4
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19
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~400
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3″
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203
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190
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152.5
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4
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19
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~500
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4″
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229
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229
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190.5
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8
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19
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~620
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6″
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267
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279
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241.5
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8
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22
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~800
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8″
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292
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343
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298.5
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8
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22
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~950
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10″
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330
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406
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362
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12
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25
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~1150
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12″
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356
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483
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432
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12
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25
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~1350
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14″
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381
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533
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476
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12
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29
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~1500
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16″
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406
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597
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540
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16
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29
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~1700
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18″
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432
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635
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578
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16
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32
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~1850
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20″
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457
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698
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635
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20
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32
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~2000
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- Applicable Standards & Testing
- Design & Manufacture: API 600 (13th Edition or Latest) – Steel Gate Valves
- End Flanges: ASME B16.5
- Đối mặt trực tiếp: ASME B16.10
- Pressure-Temperature Rating: ASME B16.34
- Pressure Tests:
- Shell Test: 1.5 x Rated Pressure at ambient temperature
- High-Pressure Seat Test: 1.1 x Rated Pressure at ambient temperature
- Low-Pressure Pneumatic Test: 0.5-0.7 MPa (if specified)
- Inspection Standard: API 598
- Nhận xét
- This valve is designed and manufactured in full accordance with API 600.
- Coal Tar Epoxy is a heavy-duty anti-corrosion coating. After curing, it appears black or dark brown and offers excellent weathering resistance and impermeability.
- For high-temperature, high-pressure, or abrasive media, Stellite 6 hardfacing on the seat faces is strongly recommended.
- Available Operations: Handwheel, Gearbox, Electric Actuator, Pneumatic Actuator.
CAM KẾT:
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