Lined Ball Check Valve
Self-Operating Non-Return Protection for Highly Corrosive Pipelines
0.5" – 8"
Size Range
Flanged, RF
Connection
Manufacturer's Standard
Design Std
PFA / FEP / PVDF
Lining
Engineered Lined Ball Check Valve for Corrosive Service
UNP’s Lined Ball Check Valve is engineered for the most demanding corrosive service applications. Self-Operating Non-Return Protection for Highly Corrosive Pipelines
The dove-tail-anchored fluoropolymer lining (PFA, FEP, PVDF, ETFE, or PPH) makes every valve suitable for pressure and vacuum service. Investment-cast body components ensure uniform lining thickness even at intricate contours.
Every valve is 100% hydro and pneumatic tested with optional helium leak testing on request, certified to ISO 9001:2015 and CE under PED 1128.
Why Choose This Valve
- ✓Self-operating — no actuator needed
- ✓Dove-tail anchored lining (pressure & vacuum)
- ✓Solid PTFE / TFM ball
- ✓Integral PFA seat
- ✓100% Tested per BS EN 12266-1
Technical Specifications
Engineered to meet international standards for corrosive valve service.
Manufacturer's Standard
Design Std
ANSI B 16.34
Shell Design
ANSI B 16.1 (Up to 4")
Face to Face
ANSI B 16.5 150# / DIN PN 10
Flange Rating
BS EN 12266-1
Testing Standard
Flanged, RF
Connection
Engineered for Performance
Every detail purpose-engineered for corrosive service longevity.
Virgin Materials
100% virgin PFA / FEP / PVDF from Dyneon, Chemours, Solvay.
Dove-Tail Lining
Anchored lining suitable for both pressure and vacuum service.
Investment Cast
Even lining at intricate contours via investment-cast bodies.
Injection Molded
Lining applied by injection (not transfer) — compact & reliable.
100% Tested
Hydro & pneumatic tested — optional helium leak testing.
ISO & CE Certified
ISO 9001:2015 + CE certification under PED 1128.
Multi-Standard
ANSI, DIN, and JIS flange dimensions available.
Antistatic Option
Antistatic PFA grade (C 980 / 8502 ESDZ) for explosive atmospheres.
Detailed Engineering Reference
Tests, weight chart, valve code reference, and pressure-temperature graph.
Tests Performed
| Test | 0.5" – 3" | 4" – 8" |
|---|---|---|
| High Pressure Shell Test (Hydro) | 225 PSI | 150 PSI |
| High Pressure Seat Test (Hydro) | 165 PSI | 150 PSI |
| Low Pressure Seat Test (Pneumatic) | 45 PSI | 45 PSI |
| Spark Test | 20 KVDC | 20 KVDC |
Valve Net Weight Chart
| Size | Weight (kg) | Weight (lb) |
|---|---|---|
| 0.5" | 2.15 | 4.8 |
| 0.75" | 3.7 | 8.2 |
| 1" | 3.7 | 8.2 |
| 1.5" | 6 | 13.2 |
| 2" | 9.8 | 21.6 |
| 2.5" | 15 | 33 |
| 3" | 20.7 | 45.6 |
| 4" | 28.4 | 62.5 |
| 6" | 59 | 129.8 |
| 8" | 95 | 209 |
Valve Code Reference
Complete reference of code values used in this valve's part-numbering system.
Valve Type
| Option | Code |
|---|---|
| Ball Check Valve | BCKV |
Body Casting
| Option | Code |
|---|---|
| ASTM A 216 GR. WCB | C1 |
| ASTM A 351 GR. CF 8 | C2 |
| ASTM A 351 GR. CF8M | C3 |
| ASTM A 890 GR. 4A (CD3MN) | C5 |
Lining Material
| Option | Code |
|---|---|
| PFA | L1 |
| FEP | L2 |
| PVDF | L3 |
| ETFE | L4 |
| PPH | L6 |
| Antistatic PFA | L7 |
Trim
| Option | Code |
|---|---|
| PTFE | T7 |
| PTFE+PVDF+EPDM | T8 |
| Hastelloy C | HC |
Seat
| Option | Code |
|---|---|
| Integral PFA | XX |
| PTFE | PT |
| PTFE w/ Silicon | PS |
Fasteners
| Option | Code |
|---|---|
| SS 304 | F2 |
| SS 316 | F3 |
| High Tensile | F4 |
| ASTM A 193 GR. B7 | F5 |
Operation
| Option | Code |
|---|---|
| Self Operating | S |
Locking
| Option | Code |
|---|---|
| Not Applicable | X |
Pressure - Temperature Graph
Operating envelope across full size range and lining options.
Product Documentation
Brochures, datasheets, and installation manuals — ready for download.
Product Brochure
Full catalogue with options and variants (PDF, EN)
Technical Datasheet
Weight chart, tests, P-T graph (PDF, EN)
Installation Manual
Step-by-step installation guide (PDF, EN)
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