420-P Door Closer
420-P Size 2 Grade 2 Hydraulic Door Closer
The Cal-Royal 420-P Door Closer is a fixed size 2 hydraulic closer with a rack-and-pinion mechanism and separate closing and latching speed controls. The 420-P is part of the 400 Series, described in the existing specifications as meeting or exceeding ANSI A156.4 Grade 2. Its non-handed design and reinforced adjustable tube arm support compatible standard door installations.
Practical Uses
Consider the 420-P for suitable commercial and residential doors where a size 2 hydraulic closer meets the opening's requirements. It offers controlled door return without the adjustable spring-size range of a multi-size closer. Check door width, weight, mounting arrangement, operating conditions, and required opening force before selecting it.
For replacement work, compare the existing mounting pattern, arm arrangement, door and frame geometry, and closing-power requirement. A similar appearance does not establish that the new closer will reuse existing holes or provide the correct power. Choose from Alum, Duro, and Gold finishes.
Installation and Replacement
Use the 420-P-specific instructions and template before marking or drilling. Confirm mounting clearances, opening angle, required fasteners, and arm position for the actual installation. Although the series description notes that its streamlined design suits many applications without adapters, verify the opening rather than assuming an adapter-free fit.
The 420-P is a sized closer: adjusting its closing and latching speed valves does not change it into a size 3 or size 4 model. Use the two separate regulating valves to tune the main closing sweep and final latching portion according to the manufacturer's instructions. Follow the adjustment limits and do not remove regulating valves.
After fitting, test from several opening positions. Verify controlled closing and reliable latch engagement without excessive impact. Correct dragging hinges, binding seals, or strike misalignment before using speed adjustments to compensate. Confirm package contents and mounting hardware suitability before starting installation.
Problems It Helps Address
- Uncontrolled door return: Hydraulic speed regulation helps control the closing cycle.
- Too much impact near the latch: Separate latching-speed control allows the final portion of travel to be adjusted independently.
- Worn size 2 hardware: Provides a replacement option where preparation and operating requirements match.
- Different door handing: Non-handed construction supports compatible left- and right-hand installations.
- Coordinating visible hardware: Three listed finish choices help match the surrounding opening.
On a small office or residential doorway, the closer should return the door at a measured pace and engage the latch behind the person passing through. The 420-P's separate closing and latching controls allow those portions of travel to be tuned independently. If the door still stops short, check the opening and whether size 2 power is appropriate rather than simply speeding up the latch cycle.
Product Details
- Part number: 420-P
- Series: 400 Series
- Type: Sized hydraulic door closer
- Spring size: Fixed size 2
- Performance: Existing specifications state that the series meets or exceeds ANSI A156.4 Grade 2
- Mechanism: Rack and pinion
- Housing: High-tensile precision-cast aluminum
- Speed controls: Separate closing and latching regulating valves
- Arm: Reinforced adjustable tube arm
- Handing: Non-handed
- Application: Compatible standard installations, subject to the model-specific template
- Listed finishes: Alum, Duro, and Gold
Model Selection and Optional Features
This listing is for 420-P, size 2. The broader series includes 430-P and SM430-P, size 3, and 440-P, size 4. Those are separate model designations, not spring-size selections shown for this product.
The existing series description lists full cover and back-check as optional. Neither is established as included by this listing's finish selections. Confirm the exact supplied configuration if either feature is required. Do not assume delayed action, hold-open operation, or adjustable spring power is included.
Opening force and latching: Select the closer for the complete opening and verify both usable opening force and reliable closing after installation. Do not infer accessibility or fire-door suitability from the Grade 2 designation alone; verify the exact model documentation and project requirements.
Installation Instructions
420-P Door Closer Installation Instructions
