Product ID: 10188233 – Brass Backup Ring (Pneumatic Valve Component)

Description:
This component is a brass backup ring, specifically designed for the pneumatic on/off valve assembly (water switch) in high-pressure waterjet cutting systems . It is a precision-machined, non-extrusion ring that serves as a critical anti-extrusion support component within the high-pressure sealing stack of the pneumatic control valve .

Applications:

• Used as a backup ring within the pneumatic on/off valve assembly of KMT waterjet cutting systems 

• Installed adjacent to the seal assembly (Product ID 20428052) to prevent seal extrusion under ultra-high pressure 

• Positioned between the HP Gland (Product ID BV701184) and the seal assembly within the valve body (Product ID 10189181) 

• Suitable for normally closed (NC) pneumatic control valves on SL-V series (30-50 HP) and SL-VI series intensifier pumps 

• Compatible with KMT AccuStream waterjet systems operating at 60,000 PSI (approximately 4,137 bar)

Features:

• Brass Construction: Manufactured from high-quality brass material, offering excellent corrosion resistance, anti-galling properties, and durability in waterjet environments 

• Anti-Extrusion Function: Functions as a rigid mechanical barrier that prevents the softer seal material from being forced into clearance gaps under ultra-high pressure, protecting the primary seal from extrusion failure

• Precision-Machined: Manufactured to exact OEM dimensional specifications for proper fit within the valve body groove 

• High-Pressure Rating: Engineered for continuous operation at 60,000 PSI (approximately 4,137 bar)

• OEM Compatibility: Direct replacement part for KMT AccuStream waterjet systems, cross-referenced as part number 1-11104 

• Repair Kit Component: Included as a standard component in pneumatic valve repair kits, such as KMT part numbers 05116025/05116017 

Assembly Context (Pneumatic Control Valve, Normally Closed):
The brass backup ring (item 4) is a key component within the complete pneumatic on/off valve assembly. The assembly includes :

• Item 1: 10177855 – Pneumatic Actuator Assembly, NC

• Item 2: 10189181 – Valve Body

• Item 3: BV701184 – HP Gland

• Item 4: 10188233 – Brass Backup Ring

• Item 5: 20428052 – Seal Assembly

• Item 6: 20435636 – Valve Stem

• Item 7: 10178697 – Valve Seat

Maintenance:

• Critical Wear Component: The brass backup ring is a consumable component that should be replaced whenever the associated seal assembly (20428052) is replaced. Do not reuse a backup ring that shows signs of permanent compression set, splitting, deformation, or edge damage

• Inspection: During pneumatic valve overhaul, inspect the backup ring for signs of cracking, wear, extrusion damage, or loss of dimensional integrity. Even minor damage warrants replacement

• Orientation: When installing, place the backup ring on the low-pressure side of the seal assembly, adjacent to the HP Gland, as shown in the equipment service manual 

• Surface Preparation: Clean the valve body groove and sealing surfaces thoroughly with a soft cloth and low-pressure water. Remove all debris, old seal residue, and mineral deposits. Do not use abrasive tools that could scratch sealing surfaces

• Lubrication: Apply manufacturer-recommended high-pressure grease to the backup ring and seal assembly during installation to prevent pinching, rolling, or damage during assembly

• Full Depressurization: Always fully depressurize the waterjet system (both hydraulic and high-pressure water circuits) and follow lockout/tagout procedures before disassembling the pneumatic valve assembly

• Do Not Use Alone: Never install a backup ring without its corresponding seal assembly, as the backup ring alone does not provide sealing function

• Torque Compliance: When reinstalling, tighten the HP Gland (BV701184) to the specific torque value listed in the equipment service manual to ensure proper compression of the seal stack

• Storage: Store spare brass backup rings in a clean, dry environment away from direct sunlight, ozone, or harsh chemicals to prevent material degradation

• Kit Availability: This brass backup ring is commonly available as part of complete on/off valve repair kits, which include the seal assembly, backup ring, valve stem, and other required components for a complete valve overhaul