Overview

This document provides detailed technical specifications and ordering information for the YCXF series normally closed solenoid valves, primarily used in fire fighting systems. These valves are designed for water as the medium and feature manual override capabilities.

Key Characteristics

• Manual override to shut off the solenoid valve.
• Valve remains open when de-energized.
• Specifically applied to fire fighting systems.

Operating Conditions

• Medium: Water
• Temperature Ranges by Seal Type:
  • NBR Seal: -10°C to 80°C
  • EPDM Seal: -30°C to 120°C
  • VITON Seal: -30°C to 150°C
• Pressure Range: 0.05 MPa to 1.6 MPa

Valve Specifications

• Port Sizes: 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
• Port Threads: BSPP, BSPT, NPT, Flange, UNF
• Orifice Sizes (mm): 12, 15, 20, 25, 32, 40, 50
• Voltage Options: DC - 12V, 24V; AC - 24V, 120V, 240V (60Hz); 110V, 220V (50Hz)
• Tolerance: ±10%
• Coils: Model S21B, 20VA (AC), 18W (DC), IP65 rated, 100% duty cycle

Materials

• Body: Brass or Stainless Steel
• Seals: NBR, EPDM, or VITON
• Armature Tube: Stainless Steel 304
• Plunger and Stop: Stainless Steel 430F
• Springs: Stainless Steel 304

Ordering Code Structure

The valve model code is constructed to specify series, orifice size, port thread, body material, seal type, coil type, and voltage. For example:

YCXF 32 GSN S21B1 translates to:

• YCXF Series
• Normally Closed (N.C.)
• 32 mm Orifice
• 1 1/4" G Thread
• Stainless Steel Body
• NBR Seal
• Coil S21B, AC 220V, DIN standard

Code Elements:

• Voltage/Port Thread/Body/Seal/Coil/Type
• Port Thread: G (BSPP), N (NPT)
• Body: B (Brass), S (Stainless Steel)
• Seal: N (NBR), E (EPDM), V (VITON)
• Coil: S21B with voltage options (1=AC220V, 2=DC24V, 3=AC110V, 4=DC12V, 5=AC24V, 6=DC6V)

Performance Parameters

Dimensions and Additional Notes

Dimensions vary by model and orifice size, with typical body lengths and heights provided for each valve size. The valves are designed for normally closed operation with coil S21B and DIN standard mounting.

Critical Information and Best Practices

• Ensure correct seal material selection based on operating temperature.
• Verify voltage compatibility with coil specifications.
• Maintain pressure within specified limits (0.05 to 1.6 MPa).
• Use appropriate port thread and size for installation compatibility.
• Manual override allows emergency shutoff independent of coil energization.