- DN50~DN300(1/2″~12″)
- 16/25/40 bar
- Air, Gas, Oil, Liquid
- 0°C~180°C
- ISO5208, API598
- ASME B16.5, ASME B16.25
- Stainless Steel 304/316/316L, WCB, Cast Iron
Specification
ANSI Class 150 Manual Stainless Steel Flanged Gate Valve: A Universal Solution for Industrial Fluid Control
I. Product Overview
As a critical shut-off device in industrial pipeline systems, the Newway ANSI Class 150 manual stainless steel flanged gate valve is constructed from 304/316 stainless steel or WCB cast steel. Featuring a rising stem structure, the valve enables precise on-off control for pipelines. With a diameter range of 1/2″ to 12″ (DN15-DN300) and ANSI Class 150 pressure rating (up to 1.6MPa), it stably manages the flow of water, gases, and oil products within -20°C to 180°C. The flanged connection complies with ASME B16.5, while the design adheres to API 600 and ASME B16.34, making it ideal for petrochemical, water supply, and HVAC applications.
II. Core Features: Technical Optimization of Material and Structure
Performance Advantages of Stainless Steel and Cast Steel
304/316 Stainless Steel: The 18% chromium and 8% nickel alloy in 304 offers excellent corrosion resistance in humid environments and weak acid-base media. 316 stainless steel, with added molybdenum, withstands seawater and chemical media with chloride content ≤200ppm.
WCB Cast Steel: Complying with ASTM A216, WCB steel (normalized and tempered) achieves tensile strength ≥485MPa, suitable for high-temperature steam and hot oil systems (up to 425°C).
Rising Stem and Elastic Seal Design
Visual Operation via Rising Stem: The stem moves vertically with opening/closing, linearly corresponding to handwheel rotations to prevent misoperation. Paired with a copper alloy stem nut (QT400) and graphite packing, it reduces operating torque by 30%, with force ≤150N·m (DN100).
Elastic Seat Sealing: The valve seat uses EPDM/NBR rubber or PTFE, forming a “soft seal + hard seal” dual structure with the metal gate, meeting API 598 bubble-tight standards (leakage ≤0.01×DN mm³/s).
Full Operational Condition Adaptability
Temperature Resistance: Stainless steel maintains yield strength ≥150MPa at -10°C and ensures thermal deformation ≤0.1mm/100mm at 180°C.
Medium Compatibility: Besides water and air, it tolerates light oils and neutral salt solutions, with optional food-grade seals (FDA-certified) for drinking water applications.
III. Key Attributes: Technical Parameters and Standard Compliance
|
Attribute Category |
Specific Parameters |
|
Diameter Range |
1/2″~12″ (DN15~DN300), supporting non-standard customization (min DN10, max DN400) |
|
Pressure Rating |
ANSI Class 150 (PN16, 1.6MPa), optional Class 300 (PN40, 4.0MPa) |
|
Body Material |
304 SS (CF8), 316 SS (CF8M), WCB cast steel, upgradable to duplex stainless steel (2205) |
|
Sealing System |
Seat: EPDM/NBR/PTFE; Packing: flexible graphite + PTFE, compliant with ISO 15848-1 low-leakage standards |
|
Actuation |
Manual (handwheel-driven), reserved for electric/pneumatic actuators (ISO 5211 platform) |
|
Connection Type |
Flanged (RF face), bolt spacing per ASME B16.5, face-to-face dimensions per ASME B16.10 |
|
Standards |
Design: API 600, ASME B16.34; Testing: API 598, ISO 5208; Surface treatment: ISO 12944-C3 |
|
Suitable Media |
Water, steam, air, light oils, neutral salt solutions; H₂S-resistant materials (NACE MR0175 certified) optional |