Technical Library
Resources & Downloads
Technical guides, interactive selection tools, cross-reference tables, and quote forms — everything you need to specify, install, and maintain HYCOA transfer valves.
Technical Guides & Application Notes
In-depth guides for valve selection, compliance, and application engineering
API 614 Compliance Guide
Complete guide to API Standard 614 requirements for transfer valves in lube oil, seal oil, and EHC hydraulic systems.
Replacing Kraissl Transfer Valves
Design differences, sealing mechanism deep-dive, and drop-in replacement guidance for Kraissl valve retrofits.
Maintenance & Repair Instructions
Step-by-step instructions for HYCOA JR-33 transfer valve maintenance, shoe replacement, and seal inspection.
Maintenance Tips
Practical tips for seal inspection, element replacement, and API 614 compliance in the field.
Turbine Lube Oil Systems
Application guide for transfer valves in turbine lube oil systems — selection, sizing, and installation.
Compressor Seal Oil Systems
Transfer valve selection and application guidance for compressor seal oil circuits.
EHC Hydraulic Systems
Electro-hydraulic control system transfer valve requirements and HYCOA solutions.
Power Generation & Turbine Systems
Transfer valve applications in power generation, gas turbines, and steam turbine lube oil units.
Interactive Tools & Reference Tables
Self-service tools for valve selection, sizing, and parts identification
Valve Selector Tool
3-step wizard: answer questions about your application and get a recommended valve configuration.
Valve Comparison Table
Side-by-side comparison of all HYCOA JR-33 configurations — 3-Way, Twin 3-Way, 6-Way Same-Side, Inline, and Opposite-Side.
Filter Element Finder
Enter your housing model number to find the correct replacement filter element series and part numbers.
Pressure Drop Calculator
Estimate pressure drop across HYCOA transfer valves based on flow rate, fluid viscosity, and valve size.
Spare Parts Finder
Enter your valve model number to instantly find the correct replacement shoes, soft parts kits, and stack assembly tools.
Kraissl Cross-Reference Table
Searchable cross-reference table mapping Kraissl model numbers to HYCOA JR-33 equivalents.
Valve Glossary
Definitions for duplex filter, shoe seal, Victaulic, API 614, and other industrial valve terminology.
Quote & Contact Forms
Request pricing, spare parts, or application engineering support
Request Price & Delivery
Specify valve type, size, body material, seals, and configuration to receive a quote.
Get a Replacement Quote
Tell us your existing valve brand and size — we'll identify the HYCOA drop-in replacement and quote it.
Request Spare Parts
Order replacement shoes, soft parts kits, and stack assembly tools for HYCOA, NFS, or HICORP valves.
Filtration Application Form
Submit your filtration application details for element selection and system sizing assistance.
General Contact
Questions, technical inquiries, or anything else — reach our engineering team directly.
Dimensional Drawings & Cut Sheets
Dimensional drawings, pressure drop curves, and product cut sheets are available upon request. Contact our engineering team with your valve size and configuration.
HYCOA® JR-33
Select a Valve
- JR3
3-Way Transfer Valve
Single flow path switching
- TP
3-Way Twin-Pak
Inlet + outlet in one body
- 6SS
6-Way Same-Side
Most popular duplex config
- 6IL
6-Way Inline
Straight-through piping
- 6OS
6-Way Opposite Side
Opposing supply & return lines
- HIC
HICORP Transfer Valves
2″ – 12″ large-bore service
Answer 3 questions → get a recommendation