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4″ 150LB Hypalon Fully Lined Diaphragm Valve

4″ 150LB Hypalon Fully Lined Diaphragm Valve

Flow Path Design Straight-Through (Non-Weir) ∙ Bore: 85–90% of nominal pipe ID
Size Range DN50 to DN200 (2″ to 8″)
End Connections • Flanged (EN 1092-1 Type A) ∙ ANSI Class 150
• Optional: Lug/Wafer
Flow Coefficient DN100 (4″): Cv ≈ 120 (vs. 180 for full-bore)
Pressure Drop ΔP ≈ 0.3–0.8 bar (water, 2 m/s flow)
Actuation Manual Handwheel ∙ Pneumatic (Spring-Return) ∙ Electric (On/Off)
Certifications PED 2014/68/EU (Cat. II) ∙ ISO 9001 ∙ EN 10204 3.1

Keterangan

Straight-Through Diaphragm Valve Technical Datasheet

(Non-Weir, Reduced-Bore Design)
Compliance: BS5156 ∙ Bahan: Ductile Iron + Full EPDM Lining

Komponen

Material & Specification

Key Properties

1. Valve Body

Ductile Iron (EN-GJS-400-18/GGG40)
• Full Internal Lining: EPDM (3 mm min. thickness)

• Pressure Rating: PN10/PN16
• Lining Adhesion: ≥ 5 MPa (ISO 4624)
• Corrosion Protection: Full EPDM barrier

2. Disc

Ductile Iron (GGG40)
• EPDM-Encapsulated

• Reduced-Bore Design: 85–90% of pipe ID
• Abrasion-Resistant Surface

3. Stem

AISI 316L Stainless Steel
• Mechanically Polished (Ra ≤ 1.6 μm)

• SSC-Resistant (NACE MR0175)
• Hardness: 140–180 HB

4. Diaphragm

Hypalon
• Polyester Fabric Core

• Temp Range: -20°C to +130°C
• Cycle Life: ≥ 50,000 cycles

5. Bonnet

Ductile Iron + Full EPDM Lining

• Bolted Design (EPDM-Coated Bolts)

6. Seals

EPDM O-Rings/Gaskets

• Bubble-Tight Shutoff (ISO 5208 Rate A)

 Critical Technical Data

Parameter

Spesifikasi

Flow Path Design

Straight-Through (Non-Weir) ∙ Bore: 85–90% of nominal pipe ID

Size Range

DN50 to DN200 (2″ to 8″)

End Connections

• Flanged (EN 1092-1 Type A) ∙ ANSI Class 150
• Optional: Lug/Wafer

Flow Coefficient

DN100 (4″): Cv ≈ 120 (vs. 180 for full-bore)

Pressure Drop

ΔP ≈ 0.3–0.8 bar (water, 2 m/s flow)

Aktuasi

Manual Handwheel ∙ Pneumatic (Spring-Return) ∙ Electric (On/Off)

Certifications

PED 2014/68/EU (Cat. II) ∙ ISO 9001 ∙ EN 10204 3.1

 Straight-Through vs. Full Bore: Key Differences

Feature

Straight-Through Valve

Full-Bore Valve

Bore Diameter

85–95% of pipe ID

100% of pipe ID

Flow Efficiency

Moderate (Cv ≈ 65% of full-bore)

Maximum (No restriction)

Slurry Handling

Good (Less clogging than weir-type)

Excellent (Zero clogging risk)

Mechanical Strength

Higher (Thicker walls due to reduced bore)

Lower (Thinner walls to match pipe ID)

Cost

Lower (Less material)

Higher

 Design Advantages of Straight-Through Configuration

  1. Optimized for Slurries & Viscous Fluids
    • Smooth, obstruction-free flow path prevents particle buildup (e.g., wastewater sludge, pulp).
  2. Robust Pressure Containment
    • Thicker ductile iron walls (enabled by reduced bore) withstand surge pressures up to 1.5×PN.
  3. Simplified Maintenance
    • Top-entry diaphragm replacement (no pipe disassembly).
  4. Cost-Effective Corrosion Protection
    • Full EPDM lining isolates ductile iron from corrosive media (pH 3–12).

 Limitations & Design Notes

  • Not Pigable: Reduced bore prevents pipeline pigging.
  • Chemical Limits: EPDM incompatible with oils, aromatics, concentrated acids (>20% H₂SO₄).
  • Suhu: Max. 130°C (EPDM) – derate pressure above 80°C.
  • Actuator Sizing: Higher torque required vs. weir-type due to larger diaphragm area.

 

JAMINAN:

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