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STZ Industries 4 in. FIP each X 4 in. D FIP Black Malleable Iron Coupling

STZ Industries 4 in. FIP each X 4 in. D FIP Black Malleable Iron Coupling

Meet the STZ Industries 4 in. FIP x 4 in. FIP Black Malleable Iron Coupling — a rugged, lead-free solution engineered for dependable connections in potable water, irrigation, and i…

Stz Industries MPN 350CO-4 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $28.99. Our online price is $31.99.
$31.99
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About Product Overview

Meet the STZ Industries 4 in. FIP x 4 in. FIP Black Malleable Iron Coupling — a rugged, lead-free solution engineered for dependable connections in potable water, irrigation, and industrial piping systems. With two 4-inch female pipe thread ends, this coupling makes it easy to join 4" pipes with confidence and minimal downtime.

The malleable iron construction delivers a proven balance of strength and ductility, absorbing shock and vibration while maintaining a tight seal. The classic black finish adds durability and a weather-ready look for installations in demanding environments.

Key benefits

  • Lead-free design supports safer potable-water installations and peace of mind for building projects.
  • Two 4" FIP ends (female iron pipe threads) for straightforward integration with compatible 4" male fittings and pipes.
  • Durable malleable iron provides reliable performance under thermal and mechanical stress, outperforming lighter-duty options.
  • Ratings you can rely on: up to 300 psi and 150°F service, suitable for a wide range of water, HVAC, and industrial piping needs.
  • Bagged packaging keeps fittings clean and ready for field installs or warehouse storage.

Where and how to use

This coupling is ideal wherever you need to connect two 4" pipes with female threads. Practical applications include replacing damaged couplings in water lines, retrofitting older systems with lead-free components, and securing robust joints in irrigation, commercial plumbing, or light industrial piping networks.

Installation tips

Pair this coupling with appropriate 4" male-threaded fittings. Apply sealant or PTFE tape to male threads, ensure threads are clean, and avoid overtightening to protect the integrity of the joint. Always verify system pressure and temperature stay within the 300 psi / 150°F ratings for a dependable, long-lasting connection.

Specifications at a glance

  • End 1: 4" FIP
  • End 2: 4" FIP
  • Material: Malleable Iron
  • Finish: Black
  • Maximum Pressure: 300 psi
  • Maximum Temperature: 150°F
  • Packaging: Bagged
  • Lead Content: Lead-free

The Details Specifications

Brand Stz Industries
SKU 4908448
UPC 019442113872
Unit 0
Case Pack Quantity 8 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 5 × 5 × 4
Weight 6 lbs
Cubic Feet 0.16561 ft³
Country of Origin VIETNAM
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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