Description
PVC-21 Blue Solvent Cement
Spears® Manufacturing PVC-21 Blue Solvent Cement is a high-strength, fast-setting, medium-bodied PVC solvent cement formulated for joining compatible rigid PVC pipe and fittings in pressure water, plumbing, drainage, and other approved piping applications.
The blue formulation is suitable for interference-fit Schedule 40 PVC connections through 6" and Schedule 80 PVC connections through 4", while also providing primerless capability for qualifying Schedule 40 and SDR pressure water systems through 4" where local code permits.
Product Highlights
- Blue cement
- Fast-setting formula
- High-strength formulation
- Medium-bodied consistency
- Designed for compatible rigid PVC
- Schedule 40 applications through 6"
- Schedule 80 applications through 4"
- Primerless capability for qualifying pressure water systems
Technical Specifications
| Product Type | PVC Solvent Cement |
|---|---|
| Manufacturer | Spears® Manufacturing |
| Product Series | PVC-21 |
| Color | Blue |
| Resin | PVC |
| Body | Medium Body |
| Relative Set | Fast |
| Specific Gravity | 0.955 ± 0.04 |
| Minimum Viscosity | 500 cP @ 73 ± 2°F |
| Schedule 40 Maximum Size | Through 6" Interference Fit |
| Schedule 80 Maximum Size | Through 4" Interference Fit |
| Primerless Use | Schedule 40 & SDR Pressure Water Systems Through 4" Where Local Code Permits |
| ASTM Standard | ASTM D2564 |
| Maximum VOC Emissions | 425 g/L |
| Shelf Life | 3 Years from Date Stamped on Container |
High-Strength PVC Joining
PVC-21 is formulated as a high-strength PVC solvent cement for compatible rigid PVC pipe and fittings, providing a medium-bodied consistency that supports dependable coverage and assembly across its specified Schedule 40 and Schedule 80 size ranges.
The fast-setting formulation is suitable for properly prepared Schedule 40 interference-fit connections through 6" and Schedule 80 interference-fit connections through 4" when the complete joint is assembled and cured according to Spears® requirements.
Pressure Water Applications
PVC-21 is designed for compatible rigid PVC piping systems and is particularly useful for pressure water applications where a high-strength, fast-setting solvent cement is appropriate for the selected pipe, fittings, and operating conditions.
Always confirm the pipe material, schedule, nominal size, pressure requirements, fitting configuration, service conditions, and applicable Spears® joining instructions before selecting PVC-21 and completing the solvent-cement connection.
Primerless Capability
PVC-21 can be used without a separate primer on PVC Schedule 40 and SDR pressure water piping systems through 4" where local code permits, providing a simplified joining option for qualifying installations within the manufacturer's specified limitations.
Primerless installation should not be used for other applications, schedules, or sizes, including Schedule 80 industrial applications, so the piping system and local code requirements should always be verified before beginning installation.
Blue Cement & Product Handling
The blue formulation provides a clearly visible appearance around properly assembled PVC pipe and fitting connections, making the applied cement easier to identify during installation while providing the high-strength characteristics associated with PVC-21.
The container should remain tightly sealed between uses because solvent evaporation can cause the cement to become thickened, stringy, or gelled, and thinner should not be added in an attempt to restore cement that has changed from its intended application consistency.
Installation & Selection Considerations
- Check the cement before use.
- Keep the container tightly sealed.
- Keep mating surfaces clean and completely dry.
- Confirm the pipe schedule and size are within product limits.
- Follow Spears® joining and cure requirements before placing the system in service.
Review the supplied Spears® documents for additional PVC-21 specifications, Schedule 40 and Schedule 80 size limitations, primerless pressure-water requirements, product standards, storage guidance, and solvent-cement installation information before use.
Need Help Selecting PVC Solvent Cement?
Our PVC product specialists can help review your pipe size, schedule, pressure water application, primer requirements, fitting configuration, service conditions, and installation needs before you order.
Frequently Asked Questions
What color is PVC-21 cement?
PVC-21 is supplied in a blue formulation that provides a clearly visible appearance around compatible rigid PVC pipe and fitting connections after proper solvent-cement assembly.
Is PVC-21 a fast-setting cement?
Yes. Spears® identifies PVC-21 as a fast-setting, medium-bodied, high-strength PVC solvent cement formulated specifically for use with compatible rigid PVC piping systems.
What size Schedule 40 PVC can PVC-21 join?
PVC-21 is suitable for compatible rigid Schedule 40 PVC pipe and fitting connections with interference fit through 6" when installed according to the applicable Spears® joining requirements.
Can PVC-21 be used with Schedule 80 PVC?
Yes. PVC-21 is suitable for compatible Schedule 80 PVC interference-fit connections through 4", but Schedule 80 applications are not included in the product's primerless-use allowance.
Can PVC-21 be used without primer?
Yes, but only on compatible PVC Schedule 40 and SDR pressure water piping systems through 4" where local code permits the primerless joining method specified by Spears®.
Can PVC-21 be used primerless on Schedule 80 PVC?
No. Spears® specifies that PVC-21 should not be used without primer in Schedule 80 industrial applications or in other applications, schedules, and sizes outside the stated primerless-use limits.
What is the shelf life of PVC-21?
PVC-21 has a specified shelf life of three years from the date stamped on the bottom of the container when the cement is properly stored and the container remains tightly sealed.
What if PVC-21 becomes thick or gelled?
Do not add thinner to PVC-21 that has become excessively thickened, stringy, or gelled because changing the viscosity can significantly alter the intended properties and performance of the solvent cement.
Important Ordering & Installation Notes
- Check the container date before use.
- Do not add thinner to thickened cement.
- Verify the PVC pipe schedule and nominal size.
- Confirm primerless use is permitted for the application.
- Allow the completed solvent-cement connection to cure before service.
