Coal Tar Coated RS Gate Valves

Описание

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

1. 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.

2. General Technical Specifications

3. 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.

4. 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.

5. Main Technical Characteristics

1. 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.
2. 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.
3. 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.
4. Flexible Wedge Option: For Class 300 and above, or for larger diameters, a flexible wedge design compensates for thermal distortions and prevents jamming.
5. 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.
6. Backseat Design: Allows for repacking under pressure (online maintenance).

6. Principal Dimensions & Connection Data (Reference for Class 150 RF)

Note: Final dimensions subject to approval drawings. Conforms to ASME B16.10.

7. Applicable Standards & Testing

• Design & Manufacture: API 600 (13th Edition or Latest) – Steel Gate Valves
• End Flanges: ASME B16.5
• Лицом к лицу: 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

8. Замечания

• 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.

ГАРАНТИЯ:

SAVVY VALVES стремится предоставлять исключительное качество продукции и беспроблемное послепродажное обслуживание. Наши клапаны гарантированно обеспечивают минимальный срок службы 12 месяцев, в течение которых мы бесплатно поставляем все необходимые запасные части и подробные инструкции по техническому обслуживанию. В течение гарантийного срока, если произойдет какой-либо ущерб, не вызванный человеком, мы бесплатно заменим компоненты и предоставим профессиональную техническую поддержку. После истечения срока гарантии клиентам нужно будет оплатить только стоимость запасных частей, при этом продолжая пользоваться скидками на услуги по техническому обслуживанию. Наша цель — помочь клиентам сократить эксплуатационные расходы и повысить эффективность производства за счет надежного качества и комплексной послепродажной поддержки. Будь то технические запросы или потребности в техническом обслуживании, наша команда экспертов оперативно отреагирует, чтобы гарантировать, что ваша клапанная система всегда будет поддерживать оптимальную производительность.