Rua do Progresso, lote 15 • Vilarinho das Cambas • V. N. Famalicão
+351 252 303 210

DF Series

DF Series


Pressure ratings
(300-6000 psi)
Temperature range
-46ºC to 240ºC (-50°F to 464°F)
Size range
½” – 1″: CL150-2500
1¼” – 1½”: CL150-1500
2″: CL150-600
3″ – 4″: CL150/300
Body style
Double block and bleed | Twin Ball | Full/Reduced Bore
End connections
Flanged | Welded | Threaded
Body materials
A350 LF2 cl.1
A479 316/L
Seat materials


Standard Features:
Floating ball | Double block and bleed | Twin ball | Soft seated | Full/Reduced bore | Bidirectional
Antistatic design
Low emission packing | Live loaded stem packing

NACE MR0175 / ISO 15156 compliance
Double encapsulated body sealing
ISO 5211 top works for automation
Anti blowout stem
Self relieving seats | Pressure equalizing hole


Optional Features:
Food grade compatible version (CE1935/2004 version)

Fire safe design


Construction standards:

ASME B16.34 | ISO 17292
ISO 5211


End connection standards:
RF Flange – ASME B16.5 Raised Face

RTJ Flange – ASME B16.5 Ring Type Joint

SW – ASME B16.11 Socket Weld

BW – ASME B16.25 and B36.10M Butt Weld

BW Nipple – ASME B16.25 and B36.10M Long Butt Weld

NPT – ASME B1.20.1 Threaded

BW – ISO 1127 or ISO 4200 Butt Weld

BW Nipple – ISO 1127 or ISO 4200 Long Butt Weld

BSPT – ISO 7-1 Threaded

BSPP – ISO 228-1 Threaded


Face to face standards:
Manufacturer standard


Pressure testing standards:
EN 12266-1 | ISO 5208 | API 598 Rate A


Body materials:
Standard: A350 LF2 cl.1; A479 316/L | Optional: A479 S31803 (Duplex F51); A479 S32760 (Super Duplex F55); Alloy 22; Alloy 625; others


Trim materials:
Ball – Standard: A351 CF8M | Optional: A479 316/L; others

Stem – Standard: A479 316/L; A564 S17400 | Optional: Alloy 718; others


Seat materials:
Standard: C-RPTFE; DEVLON | Optional: TFM 1600; PEEK


Bolting materials:
Standard: A320 Gr. L7M; A193 Gr. B8M cl.2


Product certification:

Fugitive emissions tested acc. to ISO 15848

Fugitive emissions tested acc. to TA-Luft VDI 2440

ATEX 2014/34/EU

PED 2014/68/EU



Stem extensions with double packing

Simple stem extension

Lockable lever

Bracket for automation

Pneumatic actuator

Limit switch

Solenoid valve