The Threaded Blind Caps – NH Female with 1/4" Bleeder Petcock are designed to securely seal NH-threaded fire service connections while providing a convenient means of relieving trapped pressure before removal. Ideal for hydrants, hose connections, apparatus outlets, and water supply systems, these caps help protect threads and equipment from contamination, debris, and damage when connections are not in use.
Manufactured from aircraft-grade 6061-T lightweight aluminum, these blind caps are hard-coat anodized to Military Specification Type III for exceptional durability, corrosion resistance, and long service life. The integrated 1/4" bleeder petcock allows operators to safely vent residual pressure before removing the cap, helping improve operational safety during firefighting and water supply operations.
Features
• NH female blind cap with integrated 1/4" bleeder petcock
• Allows safe venting of trapped pressure prior to cap removal
• Protects threaded connections from dirt, debris, and damage
• Manufactured from aircraft-grade 6061-T aluminum
• Lightweight yet durable construction
• Military Specification Type III hard-coat anodized finish
• Corrosion-resistant design for long service life
• Suitable for hydrants, apparatus outlets, and hose connections
• Designed for municipal and industrial fire service applications
Specifications
• Manufacturer: Harrington
• Product Type: Threaded Blind Cap
• Thread Type: NH Female
• Bleeder Valve: 1/4" Petcock
• Material: Aircraft-Grade 6061-T Aluminum
• Finish: Military Specification Type III Hard-Coat Anodized
• Application: Fire Hose, Hydrant, and Apparatus Connections
Available Models
• HTBC-15NH-PC — 1.5" NH Female Blind Cap with 1/4" Bleeder Petcock
• HTBC-25NH-PC — 2.5" NH Female Blind Cap with 1/4" Bleeder Petcock
