Zurn ZRB190 Vertical Expansion Joint – Cast Iron, Threaded & No-Hub.

Product Overview

The Zurn ZRB190 Vertical Expansion Joint is purpose-built for managing the natural expansion and contraction of piping systems in commercial and industrial applications. Featuring a durable Dura-Coated cast iron body and a polished bronze sleeve, this joint is engineered for long-lasting performance under dynamic temperature and pressure conditions.

The ZRB190 includes a preformed neoprene packing gasket that ensures a tight, leak-proof connection and allows for smooth movement. Available in both threaded and no-hub configurations, and in sizes ranging from 2" to 10", it offers a versatile fit for various piping layouts. This vertical expansion joint provides a critical solution where thermal changes can create stress or misalignment in a pipeline.

Features & Benefits:

• Vertical Flexibility: Designed to accommodate expansion and contraction in vertical pipe runs

• Durable Cast Iron Construction: Dura-Coated cast iron body resists corrosion and wear

• Leak-Proof Seal: Preformed neoprene gasket ensures a watertight and flexible connection

• Polished Bronze Sleeve: Enhances movement and reduces internal friction

• Multiple Sizes: Offered in 2", 3", 4", 5", 6", 8", and 10" sizes for widespread compatibility

• Threaded or No-Hub Connections: Available in IP threaded or NH no-hub outlet types

• Reliable Performance: Helps reduce stress on pipe joints caused by temperature fluctuation

Specifications:

• Body Material: Dura-Coated Cast Iron

• Sleeve: Polished Silicon Bronze

• Gasket: Preformed Neoprene

• Pipe Size Options: 2"–10"

• Connection Options:

  • IP Threaded

  • NH No-Hub

• Approximate Weight Range: 8 lbs to 45 lbs

• Vertical Expansion Allowance:

  • Minimum: 4"

  • Maximum: 20" (varies by pipe size)

• Height (Body Dimension): Varies by size, from 6 1/2" to 11 3/4"

• Standard Finishes: Optional galvanized finish (-G suffix)

Installation Tips:

• Install vertically to accommodate thermal movement and prevent stress on the piping system

• Ensure adequate clearance for full expansion range—verify minimum and maximum expansion travel per size

• Use in conjunction with rigid supports to guide expansion direction

• Refer to local plumbing code for proper placement and spacing

• Apply appropriate sealant for threaded installations and torque to manufacturer’s specifications

FAQs:

Q: What does a vertical expansion joint do?
A: It allows piping systems to expand and contract with temperature changes without causing leaks or damage.

Q: Can this joint be used in horizontal pipe runs?
A: No, the ZRB190 is designed specifically for vertical installation only.

Q: How do I select between threaded and no-hub connections?
A: Threaded connections are typically used in smaller systems, while no-hub connections are common in commercial cast iron pipe installations.

Q: Is the neoprene gasket replaceable?
A: Yes, the neoprene packing gasket can be replaced if necessary during maintenance.

Q: What is the maximum temperature this unit can handle?
A: The neoprene gasket and cast iron body perform well under standard plumbing temperatures, but always verify temperature specs with system design parameters.