NEOTECHA Type KR Ball Check Valve & Type SG Sight Glass: Your Replacement Solution
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Emerson has discontinued the NEOTECHA Type KR Ball Check Valve and Type SG Sight Glass product line. If you're searching for replacements for your installed NEOTECHA equipment, GFT9 manufactures direct alternatives that match the original specifications.
We offer replacements for all three configurations:
- Ball check valves (standalone)
- Sight glasses (standalone, double window)
- Combined ball check valve with sight glass (integrated unit)
Background: NEOTECHA Type KR and Type SG Discontinuation
NEOTECHA, part of Emerson Automation Solutions, has phased out the Type KR ball check valve and Type SG sight glass product line. These PFA-lined products were widely installed in chemical processing, pharmaceutical, and pulp & paper applications where corrosion resistance and visual flow monitoring were essential.
The discontinuation leaves maintenance teams searching for compatible replacements that don't require piping modifications or engineering redesigns.
GFT9 Replacement Products
Ball Check Valves
Our PFA-lined ball check valves match the NEOTECHA Type KR design philosophy:
| Specification | NEOTECHA Type KR | GFT9 Ball Check Valve |
|---|---|---|
| Body Material | Ductile Iron GGG40.3 (ASTM A-395) | 1.0619 (equivalent) or 1.4408 |
| Lining | Heavy duty PFA | Virgin PFA |
| Ball Material | PTFE (4-rib guided) | PTFE |
| Sizes Available | DN 25, 40, 50, 80 | DN 25, 40, 50, 80, 100, 150 |
| Pressure Rating | PN16 | PN16 |
| Temperature Range | -40°C to +200°C | -20°C to +180°C (standard), 1.4408 up to -60°C |
| Face-to-Face | EN 558-1 | DIN EN 558-1 |
| Flange Standard | PN16, ANSI 150, JIS 10K | DIN EN 1092-1 PN16, ASME B16.5 Class 150 |
| Vacuum Capability | Full vacuum | Full vacuum |
Note: For applications requiring the full -40°C to +200°C temperature range of the original NEOTECHA, please contact us to discuss material options.
Sight Glasses
Our PFA-lined sight glasses offer equivalent functionality to the NEOTECHA Type SG:
| Specification | NEOTECHA Type SG | GFT9 Sight Glass |
|---|---|---|
| Glass Type | Borosilicate (up to 200°C) | Borosilicate |
| Lining | PFA | Virgin PFA |
| Body Material | Ductile Iron | EN-GJS-400-18 or Stainless Steel 1.4408 |
| Vacuum Rating | Full vacuum | Full vacuum |
| Flow Indication | Integral drip nose | Drip indicator available |
| Window Options | Single | Double Window |
| HF Protection | FEP glass protector | Available on request |
Combined Ball Check Valve + Sight Glass
For installations using the integrated NEOTECHA KR+SG configuration, we can supply matched sets or custom-engineered combined units. Contact our engineering team to discuss your specific requirements.
Size Cross-Reference
| NEOTECHA Size | GFT9 Ball Check | GFT9 Sight Glass |
|---|---|---|
| DN 25 (NPS 1") | DN 25 / NPS 1" | DN 25 / NPS 1" |
| DN 40 (NPS 1½") | DN 40 / NPS 1½" | DN 40 / NPS 1½" |
| DN 50 (NPS 2") | DN 50 / NPS 2" | DN 50 / NPS 2" |
| DN 80 (NPS 3") | DN 80 / NPS 3" | DN 80 / NPS 3" |
All sizes follow EN 558-1 face-to-face dimensions for direct bolt-in replacement.
Key Features Maintained
Our replacement products preserve the critical characteristics that made NEOTECHA equipment reliable:
For Ball Check Valves:
- Heavy-duty PFA lining for chemical resistance
- Guided ball design for consistent operation in vertical and horizontal installations
- Suitable for full vacuum service
- Leak-free flange connections
For Sight Glasses:
- Borosilicate glass for high-temperature visibility
- Full vacuum capability
- Flow indication features
- Available with protective features for HF service
Why Choose GFT9 as Your NEOTECHA Replacement Supplier
German Manufacturing
All GFT9 products are manufactured in Germany using virgin PFA from approved suppliers. Each valve and sight glass undergoes 100% spark testing at 20kV to verify lining integrity.
Faster Availability
While sourcing discontinued parts often means long waits and premium pricing, GFT9 standard sizes are typically available within 4-6 weeks.
Extended Size Range
Beyond the original NEOTECHA range (DN25-80), we offer ball check valves up to DN200, allowing you to standardize on a single supplier for your entire plant.
Full Documentation
Each product ships with:
- EU Declaration of Conformity (PED 2014/68/EU)
- Material certificates (EN 10204 3.1 on request)
- Dimensional inspection report
- Spark test certificate
Stainless Steel Option
For applications requiring higher corrosion resistance on external surfaces, we offer stainless steel body versions (1.4408 / CF8M) in addition to the standard ductile iron construction.
Industries We Serve
GFT9 ball check valves and sight glasses serve the same applications as NEOTECHA equipment:
- Chemical Processing: Acid and alkali handling, chlorine production, HF service
- Pulp & Paper: Chlorine dioxide systems, bleaching chemicals
- Pharmaceutical: API manufacturing, solvent systems
- Water Treatment: Chemical dosing, monitoring applications
- General Industry: Pump protection, overflow prevention, flow visualization
Technical Applications
Following the original NEOTECHA application guidance:
Ball Check Valves are used for:
- Prevention of backflow on liquid columns in front of pumps (with solid balls)
- Overflow protection in liquids and gases (with hollow balls)
- Exhaust systems in conjunction with safety valves (with steel-encapsulated PTFE-lined balls)
Sight Glasses are used for:
- Visual flow confirmation
- Low-flow indication
- Process monitoring in corrosive environments
How to Order Your Replacement
Option 1: Request a Quote Online
Ball Check Valves: Visit our Ball Check Valve Collection
Sight Glasses: Visit our Sight Glass Collection
Option 2: Send Your NEOTECHA Details
If you have existing NEOTECHA part numbers, drawings, or can photograph your installed equipment, email the details to sales@gft9.shop and we'll provide a direct cross-reference.
Option 3: Call Our Technical Team
Phone: +49 2152 9154990
We can discuss your application requirements and recommend the appropriate replacement configuration.
Frequently Asked Questions
Q: Are GFT9 products dimensionally compatible with NEOTECHA Type KR and SG?
A: Yes. Our ball check valves and sight glasses follow EN 558-1 face-to-face dimensions and standard PN16/ANSI 150 flange drilling, matching the NEOTECHA installation footprint.
Q: Can you supply the combined ball check valve + sight glass configuration?
A: Yes. We can supply matched sets or discuss integrated solutions for your specific application. Contact our engineering team with your requirements.
Q: What about JIS 10K flanges?
A: JIS flange options are available on request, matching the original NEOTECHA offering.
Q: My NEOTECHA equipment uses soft seats. Are these available?
A: Yes. We offer various seat materials including PTFE, PTFE/AS (antistatic), and glass-filled PTFE for different sealing requirements.
Q: What is the typical lead time?
A: Standard sizes DN25-DN80 typically ship within 4-6 weeks. Larger sizes or special configurations may require 8-10 weeks.
Related Products
- PFA Ball Check Valve Collection
- PFA Sight Glass Collection
- PFA Ball Valve DIN/ANSI
- Spare Parts Overview
GFT9 is a German manufacturer of PFA-lined valves and fluoropolymer components. We are not affiliated with NEOTECHA or Emerson. NEOTECHA is a trademark of Emerson Electric Co. Product names and model numbers are used for identification purposes only.