Lined Diaphragm Valve
Bubble-Tight Isolation with Full Media Separation — Pharma, Slurry & Chlorine Service
0.5" – 10"
Size Range
Flanged, RF
Connection
BS EN 13397
Design Std
PFA / FEP / PVDF
Lining
Engineered Lined Diaphragm Valve for Corrosive Service
UNP’s Lined Diaphragm Valve is engineered for the most demanding corrosive service applications. Bubble-Tight Isolation with Full Media Separation — Pharma, Slurry & Chlorine Service
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
- ✓Rising Stem & Rising Hand wheel designs
- ✓TFM + EPDM regular / PTFE+PVDF+EPDM triple-layer
- ✓Manual, pneumatic, electric actuation
- ✓Bubble-tight zero-leak shutoff
- ✓Chlorine permeation-resistant option
Technical Specifications
Engineered to meet international standards for corrosive valve service.
BS EN 13397
Valve Design
ANSI B 16.34
Shell Design
EN 558-1 Series 7
Face to Face
ANSI B 16.5, 150# / DIN PN 10 / JIS
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" – 4" | 6" – 8" | 10" |
|---|---|---|---|
| High Pr. Shell Test (Hydro) | 225 PSI | 128 PSI | 85 PSI |
| High Pr. Seat Test (Hydro) | 165 PSI | 90 PSI | 64 PSI |
| Low Pr. Seat Test (Pneumatic) | 85 PSI | 50 PSI | 50 PSI |
| Spark Test | 20 KVDC | 20 KVDC | 20 KVDC |
Valve Net Weight Chart
| Size | Weight (kg) | Weight (lb) |
|---|---|---|
| 0.5" | 2.20 | 4.85 |
| 0.75" | 3.75 | 8.26 |
| 1" | 3.65 | 8.04 |
| 1.5" | 7.35 | 16.20 |
| 2" | 11.60 | 25.60 |
| 2.5" | 18.00 | 39.70 |
| 3" | 26.00 | 57.30 |
| 4" | 41.40 | 91.30 |
| 6" | 86.90 | 191.60 |
| 8" | 205.00 | 451.10 |
| 10" | 250.00 | 551.15 |
Valve Code Reference
Complete reference of code values used in this valve's part-numbering system.
Valve Type
| Option | Code |
|---|---|
| Rising Spindle Diaphragm | DVRS |
| Rising Hand Wheel Diaphragm | DVRH |
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 |
Diaphragm
| Option | Code |
|---|---|
| TFM + EPDM (Double) | DD |
| PTFE+PVDF+EPDM (Triple) | DT |
Operation
| Option | Code |
|---|---|
| Hand Wheel | H |
| Pneumatic | P |
| Electric | E |
Fasteners
| Option | Code |
|---|---|
| SS 304 | F2 |
| SS 316 | F3 |
| High Tensile | F4 |
| ASTM A 193 GR. B7 | F5 |
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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