New Series－ Compared to the conventional quick joint,
flow rate is three times higher －FF Quick Joints《Full Flow Quick Joint》

Full Flow Quick Joint
１． Features① Ihara Science FF Quick Joints have been developed as an alternative to the conventional
quick joint.
Keeping the “Easy Desorption” of the quick joint, maximizes flow path area (full flow) reduces
pressure loss and saves energy.
Equipped with fail-safe mechanism (cannot be detached when [Open], does not [Open]when detached).
Accidental operation prevention has been implemented.
FF Quick Joints / conventional Quick joint
Comparison of Flow characteristics② Flow path＝ “Full Flow”

differential pressure
95% down

Conventional Quick Joint
Fluid resistance⇒Big decreased!
Flow rate⇒Big increased!

FF Quick Joints

Cross-sectional view
Red circle＝Flow path
Flow rate tripled

Reduced flow resistance saves energy！

③ Reliable with a“Fail-Safe Mechanism”

It can’t be detached when [Open]

Does not [Open] when detached

２． Specifications
１） Socket size ： 1/4" ・ 3/8 " ・ 1/2 " (Connection size, refer to par.3)
２） Rated pressure ： 1MPa(150psi)
３） Material ： SS304 & SS316 （Gaskets：FKM &PTFE）

４） Temperature range ： -10 ℃ ～ 80 ℃
５） Others： ① Excellent flow characteristics② Equipped with fail-safe mechanism

PlugSocket３． Model Numbers
Both ends with valves

Only socket has valve

QFVF

6-

D

4D

6P --

R

①Body size
②Type
③Socket size
④Socket connecting type➀：Body size
⑤Plug size
⑥Plug connecting type

Size Ball dia.
(Inch) (mm)
41/4
563/8
781/210➁：Type
Both ends with valve
SymbolSymbolVFSLPVFS
P⑦Handle typeDConnection type※3
BI-Lok

⑦：Handle typeC

BI-Lok Bulkhead Symbol

SymbolTypeSet(Socket＋Plug)
Socket ※1
Plug ※2

Only socket with Valve
Symbol④・⑥：Connection type

TypeSet(Socket＋Plug)
Socket ※1
Plug ※2PRR
threadR
thread⑧Color of handle
TypeSymbol

color

Male

P

Plate handle

Blank

Black(standard)

FemaleA

Lever handle

RRed

B

Blue

Y

Yellow

G

GreenONPT
threadMaleN

NPT
threadFemaleEP

EP-fitE1

E1touchLever handle

BI-Lok (SS tube)
InchSymbol
468Thread

Metric⑧：Color of handle

Plate handleEP-fit(Polyurethane tube)(O.D.×I.D.)
MetricR thread・NPT thread

SymbolSize

1/44MΦ

44

1/44×2

Φ4×

Φ26.35×

3.18

Φ

6.35×

Φ

3.184×9

Φ4×Φ

9(Φ6.35)

6M

Φ

66

3/84×

2.5

Φ4×

Φ

2.5

6.35×

3.96

Φ6.35×

Φ

3.96

6×

11

Φ6×

Φ

1188

1/2

Symbol Size(Inch)

Size

SymbolMetricSize

3/8

Symbol

E1Touch(Vinyl hose)(O.D.×I.D.)

Inch
Size

SymbolSize

MΦ86×4

Φ6×Φ

4

6.35×4.35

Φ6.35×Φ4.358×14

Φ

8×

Φ

13.5(Φ9.53)

10 M

Φ

108×5

Φ

8×

Φ

5

9.53×6.35

Φ

9.53×

Φ

6.35

9×15

Φ

9×

Φ

15

1/212 M

Φ

128×6

Φ

8×

Φ

69.53×6.99

Φ

9.53×

Φ

6.99

10×16

Φ

10×

Φ

16

10×6.5

Φ

10×

Φ

6.5

9.53×7.52

Φ

9.53×

Φ

7.52

10×8

Φ

10×

Φ

8

12.7×9.53

Φ

12.7×

Φ

9.53

12×8

Φ

12×

Φ

812×9

Φ

12×

Φ

912×10Φ

12×Φ

10(Φ12.3)※1 When ordering socket individually , leave ⑤⑥ blank .
※2 When ordering plug individually, leave ③④ blank.
※3 In addition to the above sizes and types, various otherconnections are also available.

Examples of model numbers（Ex）Inquiry for Only socket has valve①Body size 1/2 in. ➁ Only socket has valve③Connecting size of socket side ½ in ④Connect type BI-LOK⑤Connecting size of plug side Ф12×Ф9 ⑥Type EP-fit⑦Plate handle (without FS)※When same size on E1,EP connection, show one size.
Ex.：Body size 3/8, Connect type EP-fit φ8Ｘφ6【 QF 8 F- 8 D 12×9 EP-P】【 QF 6 F - 8×6 EP-P 】（Ex）Inquiry for individual plug (only socket has valve)①Body size 3/8 in ②only socket has valve , individual Plug
⑤Plug side, connect size φ9×φ15 ⑥ Connect type e1 touch⑦Plate handle (without FS)【 QF 6 P - 9×15 E1-P 】（Ex）Inquiry for full set , valves on both sides①Body size 3/8 in ②Both valves, plug ・Socket set③Connect size on socket side ¼ in ④Connect type BI-Lok⑤Connect size on plug side 3/8 in ⑥Connect type BI-Lok⑦Lever handle ⑧Color of handle : Red【 QF 6VF –4D6D-A-R】

４． Examples of connecting types

BI-Lok…SUS tubing

R thread・NPT thread(male)

EP-fit…Plastic tubingﾞE1 touch…Plastic hose

Various other shapes of connection are available. Inquire for more details.

ISO 9001/ISO14001 Certified Plants (DNV certification)【Head Office】■11-3 Takanawa 3-chome Minato-ku, Tokyo 108-0074 Japan■TEL：+81-3-6721-6981 ■FAX：+81-3-6721-6991！

Warning

If you don't select and handle fittings, valves and related
accessories in an adequate manner, it may injure humanbeings and damage applicable systems. Within theresponsibility and authorization of users and piping
designers, fittings, valves and related accessories shall beadequately selected, assembled, used and maintained
based on the applicable conditions and product conformity
to the system to be applied. Please read our operation
manual carefully and feel free to contact us if you have anyquestions or requests.

WARRANTY CLAUSE
1. Warranty Period
The warranty period of the products is one (1) year from start of use or one and half (1.5) years
after delivery, whichever comes earlier. However, the products with special specification and/or
the cases used deviating from the design specification shall be exempted.
2. Scope of Warranty
For any failure and damage under makerʼs responsibility found during the warranty period, thesubstitutes and/or replacement parts shall be provided free of charge. The warranty shall not beapplied to a claim for the liquidated damages.

■URL http://www.ihara-sc.co.jp/en/■The contents of this catalog are subject to change without notice due to improvement of products or other reasons. CAT No．YKT06R2