Overview

This technical document provides detailed specifications, materials equivalence, dimensional data, and standards for cast steel globe valves and related components used in industrial applications such as water, steam, air, gas, petroleum products, and other low-corrosive fluids.

1. Components and Materials

• Parts Listed: Body, Bolt, Nut, Gasket (150Lb, 300Lb, ≥600Lb), Bonnet, Pin, Hexagonal Bolt, Washer, Disc, Rocker/Lever.
• Material Standards: Various ASTM, EN, JIS, and UNS standards are referenced for materials including A217 WC, A352 LCB, A351 CF3, CF8, CF8M, and others.
• Material Equivalence: Cross-reference tables between ASTM, EN, and other international standards are provided for bolts, nuts, and valve body materials.

2. Use and Application

Cast steel globe valves (noted to be swing check valves in some sections) are designed for use with water, steam, air, gas, petroleum products, and other non-aggressive or low-corrosive fluids.

3. Working Conditions

• Operating Temperature: -35°C to +40°C (-22°F to +104°F) typically, with maximum working temperatures up to +427°C (800°F) or +450°C depending on the valve class and standard.
• Pressure-Temperature Ratings: According to ANSI classes 150 to 600 Lbs and DIN 2401-77 standards.

4. Technical Characteristics and Standards

• Design and Manufacture: Compliant with ASME B16.6, API 594, API 6D, DIN 3230-74.
• Face-to-Face Dimensions: ANSI B16.10 and DIN 3202-77 (various parts and pressure ratings).
• Flange Dimensions: ANSI B16.5 and DIN 2543-75 to DIN 2547-75 depending on pressure rating (NP16 to NP100).
• Butt Welding Ends: ANSI B16.25 and DIN 3239-75, DIN 2553-75.
• Flange Facing: DIN 2526-75.
• Testing: API 598 standard for valve testing.
• Rating: ANSI B16.34.

5. Dimensional Data and Weight

Tables provide nominal diameters (50mm to 600mm and above), corresponding dimensions (L, L1, H), and weights (P/W Kg) for valves across different pressure classes (NP16, NP25, NP40, NP64, NP100) and ANSI classes (150, 300, 600). Key points include:

• Dimensions increase with nominal diameter and pressure class.
• Weights vary significantly, reflecting construction and pressure rating.

6. Bolts and Nuts Specifications

• Bolts and nuts conform to ASTM standards A193, A194 with various grades (B7, B16, L7, B8M, B8, etc.).
• Materials include carbon steel, alloy steel, stainless steel variants with corresponding EN and DIN equivalents.

7. Notes and Disclaimers

The manufacturer reserves the right to make technical changes without prior notice. The document includes bilingual notes (Italian and English) emphasizing this point.

Critical Information Summary

• Valves are suitable for non-aggressive fluids at temperatures up to 450°C.
• Design and dimensions comply with recognized international standards (ANSI, ASME, API, DIN).
• Material equivalence tables ensure compatibility and selection accuracy across standards.
• Dimensional and weight data support engineering design and installation planning.
• Bolts and nuts materials are specified to ensure mechanical integrity under operating conditions.