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Weathermatic 30-604DMSA Diaphragm Assembly - 3" 8000 Series

Brand: Weathermatic
Save 28%
$145.01
$105.13
SKU 30-604DMSA

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OEM replacement diaphragm assembly for Weathermatic 3" irrigation valves. Designed to restore reliable operation in 8000/8200 series valves, including 8200CR-30D Bronze Bullet models. Sold under part number 30-604DMSA.

  • Fits Weathermatic 8000 and 8200 series 3" valves (for example, 8200CR-30D) — replace worn diaphragms to stop leaking or intermittent operation.
  • Durable EPDM diaphragm material resists chlorine and chloramine for longer service life, backed by Weathermatic valve specifications.
  • Direct OEM fit for simplified replacement; no valve body modification required.
  • Compatible with common rebuild kits and springs; verify valve model and SKU before ordering to ensure proper fit.
  • Manufacturer parts listing references a diaphragm outer diameter of approximately 6-1/16" for this assembly (part 30-604DMSA).

Installation requires shutting off upstream water, removing the bonnet, and replacing the diaphragm and related seals. After installation, cycle the valve and check for proper seating and leaks. If unsure, consult official Weathermatic documentation or a qualified irrigation technician before installation.

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Frequently Asked Questions

What valves does the 30-604DMSA diaphragm fit?
It fits Weathermatic 3" valves in the 8000/8200 families (for example, 8200CR-30D). Always verify your valve model and SKU before ordering.
How durable is the replacement diaphragm?
The diaphragm uses chloramine- and chlorine-resistant EPDM per Weathermatic specifications. It provides extended service life under normal irrigation conditions.
Can I install this diaphragm myself?
Yes. Basic installation requires shutting off water, removing the bonnet, replacing the diaphragm, and testing the valve. Consult a professional if unsure.
How do I confirm I need this specific part?
Check your valve model and any stamped part numbers, or consult the Weathermatic parts diagram. If unclear, compare the existing diaphragm or consult documentation before ordering.