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OEM/ODM
Product Description
The Stainless Steel Chain Instantaneous Female Blank Cap provides a robust and rapid solution for sealing the female threads of pipe ends, flanges, or equipment nozzles. Engineered for demanding industrial environments, this cap features an instantaneous connection mechanism for swift deployment and removal. Its integrated chain ensures the cap remains securely attached to the fitting or adjacent structure when not in use, preventing loss and enhancing worksite safety and efficiency. Manufactured from high-grade stainless steel, it delivers exceptional resistance to corrosion, high pressure, and extreme temperatures, making it ideal for temporary or permanent isolation in critical applications.
| Size | Color | Working Pressure/MPa | Process | Material |
| 1.5" | Customized | 2.5 | Forging | Alu/Brass |
| 2" | Customized | 2.5 | Forging | Alu/Brass |
| 2.5" | Customized | 2.5 | Forging | Alu/Brass |
Instantaneous Secure Seal: Unique design allows for quick attachment and detachment via a simple quarter-turn action, significantly reducing downtime during maintenance or inspections.
Integrated Safety Chain: Robust stainless steel chain permanently tethers the cap to the fitting or nearby anchor point, eliminating loss in challenging environments (e.g., elevated platforms, confined spaces).
Superior Corrosion Resistance: Constructed from premium 304 or 316 stainless steel, offering outstanding protection against rust, chemicals, saltwater, and harsh atmospheric conditions.
High-Pressure & Temperature Rating: Built to withstand significant internal pressure and wide temperature fluctuations encountered in process industries.
Durable & Reusable: Solid stainless steel construction ensures long service life and repeated reliable use, providing excellent value.
Positive Seal: Creates a dependable, leak-proof barrier to protect pipe threads from contamination (dirt, moisture) or to safely isolate sections of a system.
Standard Compatibility: Designed to fit standard female pipe threads (NPT, BSPP, etc.), ensuring broad applicability.
Pipeline Maintenance & Testing: Essential for blanking off pipe ends during hydrotesting, system commissioning, repairs, or modifications.
Process Plant Shutdowns: Isolates vessels, tanks, or equipment sections for safe entry, cleaning, or servicing.
Marine & Offshore: Protects exposed threads on deck fittings, manifolds, and pipeline risers from corrosive saltwater environments.
Chemical & Petrochemical Processing: Safely seals lines containing aggressive chemicals or hydrocarbons during interventions.
Power Generation: Used in boiler feedwater, steam, and cooling water systems during maintenance outages.
Food & Beverage / Pharmaceutical: 316 stainless steel version suitable for hygienic applications requiring corrosion resistance and cleanability.
General Manufacturing: Protects machinery ports, hydraulic/pneumatic lines, and fluid transfer points during storage or transport.
Q: How does the instantaneous connection work?
A: The cap features internal lugs that engage with corresponding grooves on the mating fitting with a simple quarter-turn, creating a secure and sealed connection instantly without tools.
Q: What thread standards does this cap fit?
A: These caps are commonly available for standard female thread types like NPT (National Pipe Taper) and BSPP (British Standard Pipe Parallel). Specify your required thread size and standard when ordering.
Q: Can the chain length be customized?
A: Yes, many manufacturers offer the option to specify chain length to suit specific attachment point requirements. Consult with your supplier.
Q: What's the difference between 304 and 316 stainless steel?
A: Both offer excellent corrosion resistance. 316 stainless steel (marine grade) contains molybdenum, providing superior resistance to chlorides (like salt) and acids compared to 304. Choose 316 for highly corrosive environments (marine, chemical).
Q: Is this cap suitable for permanent blanking?
A: While highly durable and capable of long-term service, it is primarily designed for applications requiring frequent access or where loss prevention is critical. For permanent blanking, welded caps or solid plugs might also be considered, but this cap offers excellent reusable security.
