ANSI DN1200 Ductile Iron Manual Flange Type Globe Valve

Product Attribute: port size:DN50-DN1200
type:Globe Valve
structure:Stop
application:General
place of origin: China
power:Manual
customized support:OEM, ODM
temperature of media:Normal Temperature
brand name:TIANYU
media:Water
Standard or Nonstandard:Standard
Body material:Cast Iron, Ductile Iron
Standard:BS5152, ANSI B16.10
Product name:Globe Valve
Type:Normal Colse
Certificate:ISO9001:2008 CE,WRAS.ACS
Connection:Female Thread
Size:50mm-1000mm 2″-48″

INFO@TYFLUIDGROUP.COM

Specification

TIANYU Ductile Iron Flange Globe Valve: International Standard-Compliant Industrial Flow Control Solution

I. Product Overview

TIANYU ductile iron flange globe valves are designed to strict BS5152 and ANSI B16.10 standards, constructed from QT450-10 ductile iron and HT250 gray cast iron. Operated manually for flow cutoff and regulation, these valves cover DN50-DN1200 (2″-48″) with PN10-PN16 (1.0-1.6MPa) pressure ratings, suitable for -10℃~80℃ media like water, sewage, and neutral liquids. Their dual-seal structure and precision casting ensure stable performance in municipal water supply, building networks, and industrial water treatment.

II. Core Technical Parameters

Specifications & Operating Range
- Nominal Diameter: DN50/80/100/150/200/250/300/400/500/600/800/1000/1200 (2″-48″)
- Pressure Class: PN10 (1.0MPa), PN16 (1.6MPa) (compliant with BS EN 1092-1 flanges)
- Temperature Range: -10℃~80℃ (standard), -20℃~120℃ (optional special seals)
- Media: Water, sewage, non-corrosive oils, air
Materials & Sealing System
- Body/Bonnet: QT450-10 ductile iron (tensile strength ≥450MPa, elongation ≥10%), HT250 gray cast iron (HB200-240)
- Disc/Seat: Ductile iron metal seal (Ra≤1.6μm), optional NBR/EPDM soft seal (leakage rate ≤0.1%)
- Connections: Flanged (RF face, BS EN 1092-1/ANSI B16.5), female threaded (NPT, API 5B)
- Actuation: Manual (handwheel/lever, operating torque ≤200N·m@DN200)
Certifications
- Quality System: ISO 9001:2015
- Product Certifications: CE-PED 2014/68/EU, WRAS (UK drinking water), ACS (French sanitary standard)

Product Overview

III. Structural Design & Technical Features

International Standard Compliance
- Body length meets ANSI B16.10, flange dimensions compatible with BS EN 1092-1 and GB/T 9113 for global projects.
- Ergonomic handwheel design: levers for DN≤150, gear-reduced handwheels for DN≥200 to minimize operating force.
Durability Optimization
- Ductile iron body annealed at 920℃ to eliminate casting stress, fatigue resistance 30% higher than common cast iron.
- Stem made of 2Cr13 stainless steel (HRC30-35), chrome-plated (≥25μm) for corrosion and wear resistance.
Enhanced Sealing Performance
- Wedge disc with 5° tapered seat self-seals via medium pressure, sealing specific pressure ≥15MPa.
- Packing uses V-type PTFE + flexible graphite, gland bolts adjustable online for zero external leakage (≤1×10⁻⁶cc/s).

IV. Manufacturing Processes & Quality Control

Precision Casting Flow
- Lost foam casting process, blank dimension tolerance ≤±0.8mm, 100% magnetic particle inspection (MPI) for surface cracks.
- Ductile iron parts low-temperature annealed (550℃×2h), graphite morphology controlled to GB/T 1348 Grade Ⅱ+.
High-Precision Machining
- Seat sealing surface CNC lapped to flatness ≤0.01mm, red lead test contact rate ≥85%.
- Stem straightness ≤0.02mm/m, coaxiality with packing ≤0.05mm for smooth operation.
3D Quality Inspection
- Hydrostatic test: 1.5x working pressure (2.4MPa for PN16) held 30min, 1.1x sealing pressure—zero leakage.
- Material traceability: Spectral analysis per heat (C/Si/Mn deviation ≤0.05%), provided with Material Test Reports (MTR).
- Life test: 100,000 cycles without sealing degradation (GB/T 13932).

Valve Details

V. Core Product Advantages

Multi-Standard Compatibility
- Compliant with BS5152, ANSI B16.10, CE-PED for global project bidding.
- Flanged sizes DN50-DN1200 replace imported valves, reducing procurement costs.
Full-Scenario Adaptability
- Municipal water supply: WRAS/ACS certified for drinking water safety, 8-year leak-free operation at -10℃~60℃.
- Building water systems: DN50-DN300 suits high-rise risers, manual operation for emergency cutoff.
- Industrial circulating water: Ductile iron resists chloride (Cl⁻≤2000ppm), erosion life >5 years in cooling networks.
Maintenance Cost Optimization
- Replaceable seat design shortens on-site maintenance by 40%, reduces costs by 50%.
- Maintenance-free cycle reaches 5 years or 100,000 operations, 20% more reliable than similar products.

Application

VI. Application Fields & Cases

Urban waterworks: DN600 PN16 ductile iron valve in main transmission pipe, WRAS certified, 3-year leak-free operation meeting GB 5749 standards.
Commercial complex: DN150 PN10 gray cast iron valve in fire sprinkler system, manual quick cutoff meets EN 15019 fire standards.
Industrial wastewater plant: DN300 PN16 valve controls neutral sewage (pH 6-9), ductile iron resists impurity impact, annual wear ≤0.2mm.

VII. Installation & Maintenance Guide

Installation Notes
- Align media flow with body arrow; mount horizontally with handwheel upward, vertically with stem upright.
- Torque flange bolts diagonally in three steps (BS EN 1514-3); DN≥300 requires supports to reduce pipeline stress.
Routine Maintenance
- Check packing gland tightness quarterly; tighten bolts evenly (torque increase ≤10%) for leakage.
- Inspect anti-corrosion coating annually (thickness ≥100μm), repair with epoxy paint.
Troubleshooting
- Minor seat wear repairable by lapping (800+ grit abrasive); replace seat assembly for severe wear.
- Disassemble and clean packing for stem jamming, apply molybdenum disulfide grease (120℃ resistance).