DFF Series Style Block & Bleed VALVES

Flanged Block & Bleed Ball Valves with Needle Valve Vent
DESIGN FEATURES
ISOLATE VALVE :-
* Wide choice of Flange sizes and Pressure ratings.
* Robust HIGH pressure DESIGNED to be maintained
* Ball Valve has anti blowout stem for safety
* Floating ball design for positive shut-off
* Replaceable seats & seals for extended life
VENT VALVE :-
* Top Sealing Bonnet style
* NON-Rotating hard tip on bleed valve for effective shut-off
* Back sealing on the stem & adjustable gland packing
* Stem Seal below actuating threads to prevent contamination
. & gauling of threads
* Metal/Metal bonnet seal for pressure tightness
. even at elevated temperatures

* Choice of Block, Block & Bleed or Double Block& Bleed

* Bleed Port with socket pressure plug or Tube fitting
* 316 ss to NACE Specification, Full material traceability
* Barstock Material.’FB’ and Forged Body ‘FF’

DF B BALL VALVE
DF FA Series ASSY B/N/B NS HEAD ASSY
Block [Isolate] Only ITEM COMPONENT MATERIAL
ITEM COMPONENT MATERIAL
1 BODY 316 S 11
2 END FLANGE 316 S 11
1 BODY 316 S 11 *
2 BONNET HOUSING 316 S 11 *
3 BALL 316 S 11
3 HANDLE 316 S 11
4 STEM 316 S 11
4 STEM 316 S 11
5 STEM SEAL PTFE/GRAPHOIL
6 5 STEM TIP 17 / 4 PH
SEATS PTFE / PVDF/PEEK
6 GRUB SCREW STAINLESS STEEL
DF FB Series 7
8
TOP SEAL
END FLANGE SEAL
RTFE/GRAPHO
PTFE/GRAPHOIL 7 DUST CAP PVC
Block & Bleed 9 PIN STAINLESS STEEL 8 RETAINING CAM STAINLESS STEEL
10 LEVER HANDLE STAINLESS STEEL 9 RETAINING SCREW STAINLESS STEEL
11 HANDLE SLEEVE PVC 10 GLAND ADJUSTER 316 S 11
12 NUT A4 ss 11 LOCK NUT 316 S 11
13 WASHER A4 ss 12 GLAND PACKING PTFE / GRAPHOIL
14 F.E. Seal Viton 13 BONNET GASKET 316 S 11
15 CAVITY PLUG 316 S 11 14 BONNET SEAL V PTFE

7 4 9 12 13
DF FC Series 6
Double Block & 3 4
Bleed 5 7
10 11 10
12 11

14 2 9 8
6
13 14

1
2 5
8 15 3

Sample Part Number DF FCMF1025CB15NF1S

1"600lb Serrated Face Flanged Double Block & Bleed Valve [Ball/Needle/Ball Configuration] with PTFE/17-4PH Trim.
1/2"NPT [F] Outlet/1/4"NPT Vent in 316ss
Do not repeat the OUTLET PART NUMBER if same as INLET

VALVE PART NUMBER and ORDERING TABLE

Series - Style PRESSURE BORE Inlet Size/Type/Finish Outlet Size/Type/Finish Vent * Material Options
A=C150 A= 08 A=C150 A= 1=1/4"NPT A - Ali-Bronze
08 -Tg Tagging
B=Ball B=C300 Smooth 10 B=C300 Smooth 2=1/4BS C - C/Steel
F=Flange Rating 10
C=C600 B= 15 C=C600 B= PP -H Handwheel
E=B/N 15 3=1/2”NPT
D - Duplex SS
Forged D=C800 Serrated 20 D=C800 Serrated -LK Locking Kit
A=1,000/69 10 20 C=RTJ 4=1/2BS H - Hasteloy
E=C900 C=RTJ 25 E=C900
DF FA F=B/B S=3000/207 25 PP -AT AntiTamper
32 F=C1500 32 F=C1500 I - Incoloy
DF FB 13 5=3/4”NPT . Head Unit
P=6000/414 G=C2500 H=HUB 40 G=C2500 H=HUB
DF FC G=B/B/B X=10000/690 40 6=3/4BS M - Monel
NF=NPT(F) 46 NF=NPT(F) -ATK A/T Key
46 S - 316 SS
K=B/N/N 50 NM=NPT(M) 50 NM=NPT(M) -HW Handwheel
X - SPECIAL
54 54 . 316 SS
M=B/N/B PF=BSPP(F) 65 PF=BSPP(F)
65 PM=BSPP(M) PM=BSPP(M)
We reserve the right to change specifications stated in this leaflet due to our continuing programme of developement.
All Ball valves have lever handle as standard. Anti-Tamper Keys are always supplied separately, for security.
Ball & stem materials will be the same as the body material except for C/Steel which has 316 trim.