Aqualon 11620 – Check Valve Support Ring – Replaces OMAX 303274

Aqualon part 11619 is a precision-machined check valve seat, equivalent to OEM 300640. Essential in maintaining seal integrity and check valve function, this part ensures efficient non-return flow in high-pressure assemblies. Regular replacement helps prevent leakage or pressure loss.
Bullet Points:

Aqualon part number: 11619
OEM reference: 300640
Precision stainless seat for check valves
Ensures tight sealing and flow direction
Compatible with OMAX-style pumps

Direct from Europe

SKU: 11620 Category: Pump Components Brand: Omax

Description

Aqualon 11620 – Check Valve Support Ring – Replaces OMAX 303274

Aqualon 11620 replaces OMAX part number 303274, which is described in OMAX documentation as a “Support Ring, Seal, Internal Check Valve” or “Check Valve Support Ring”. The support ring is a structural component inside the check-valve assembly on OMAX direct-drive pumps (including many P3050/P405/P4055 and MAXIEM family models). Its role is to support the sealing interface of the check valve and ensure the correct positioning of internal components such as the ball, seat, ring seals and other supporting hardware. Productivity+1

Overview
Although it doesn’t bear the primary sealing load like the ceramic ball or the U-cup seal, the support ring is a critical component for the overall check-valve assembly integrity. Inside the check valve body, the support ring provides a stable surface against which other parts align and compress. If the support ring becomes worn, deformed, cracked, or improperly installed, the check-valve may mis-seat the ball, allow internal bypass, experience pressure build issues or cause excessive wear of adjacent components. Inspection documents list 303274 under the “Inspect” column for check-valve maintenance. UC Berkeley Mechanical Engineering+1

Key Features
• Direct replacement for OMAX 303274
• Supports the internal check-valve sealing stack
• Maintains geometric alignment inside the check-valve body
• Prevents mis-seating of the ceramic ball and internal leakage
• Recommended replacement when the check valve is disassembled or during scheduled service
• Design suited for the pressure and thermal cycling typical of OMAX direct-drive pump systems

When to Replace
• Whenever the check-valve assembly is opened or removed
• If the support ring shows wear, deformation, cracking or surface damage
• During scheduled check-valve maintenance intervals (see manufacturer guide)
• When related check-valve parts (ball, seat, ring seals) are replaced
• If pressure build is slow, unstable, or the valve is not seating cleanly

Compatibility
Suitable for OMAX and MAXIEM pumps that use OMAX part 303274 in their internal check-valve assembly, including models such as:
• OMAX P3050
• OMAX P405 / P4055
• MAXIEM pumps using the same direct-drive pump architecture
Always verify on your machine’s parts list that 303274 is the correct part number for your check-valve assembly.

What’s Included
• 1 × Check-Valve Support Ring (Aqualon replacement for OMAX 303274)

Why Choose Aqualon
Aqualon manufacture replacement components to match OMAX geometry and function. Installing this support ring helps restore proper check-valve alignment, ensures reliable sealing performance, and extends service life of the valve and adjacent parts.