Innovative Technologies, Creative Solutionsfor Powder and Bulk Handling

Makers of Syntron® Iris Flow Valves

Iris Flow Control Valves

Syntron ® Iris Flow ControlValvesThe first name in controlling powder and bulk materials. Rugged and built to last, Syntron®

valves have a proven track record for reliable, low-maintenance performance for a wide

range of industries and applications.

Look to Flow Valves International for exceptional value and performance in bulk material

handling. For more than 75 years, we’ve partnered with our customers to solve material

handling requirements in the most demanding and diverse industries and applications.

Proven, low-maintenance and built to last, our Syntron® Iris Flow Control Valves line—

backed by our expert team of engineers and application specialists—sets the standard for

quality, performance and reliability.

Syntron® Iris Flow Control Valves are available in three types with openings from 4 to

15-inches and 11 sleeve materials to meet different customer needs and applications. The

three types are:

FV Series – single sleeve with twist lock handle

SFV Series – single sleeve with trigger handle

DFS Series – double sleeve with trigger handle

Table of ContentsSyntron ® Iris Flow Control Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

FV Series Iris Flow Control Valve Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SFV and DFV Series Iris Flow Control Valve Specifications . . . . . . . . . . . . . . . . . . . . . 3

15-inch Iris Flow Control Valve and Adapter Spools and Wear Sleeves . . . . . . . . . . . . 4

Sleeve Selection Chart and Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Material Handling Solutions

1

I r i s F l o w V a l v e s . c o m

Syntron ® Iris Flow Control Valves

Syntron® Iris Flow Control Valvesare used for many applications and materials, from packaging andbagging to free-flowing powdersand granular materials. They providereliable, adjustable control and shut-off of free-flowing bulk materialsfrom bins, hoppers and chutes.

These valves can be intermediatelypositioned from fully open to fullyclosed by simply rotating the handlethrough an arc up to 180 degrees. A variety of sleeve materials areavailable to match your specificapplication requirements.

Syntron Iris Flow Valves are a cost-effective alternative to butterfly andslide gate valves. They are designedto permit free flow of materialswithout binding or seizing of thevalve, and without damaging yourproduct.

Adjustable material control from full feed to trickle

Syntron® Iris Flow Control Valves

Syntron Iris Flow Valves Offer:

■ Initial low-cost investment

■ Low maintenance

■ Easy sleeve replacement

■ Minimum mounting area required

■ Durable construction for manyyears of service

■ 11 sleeve materials available

Sleeve (nylon or other material)with retaining ring at each end.

With the upper end fixed,the lower end is rotated,gradually reducing aperture.

At 180 degrees of rotation, theaperture is completely closed.

2

FV Series Specifications

FV-10 flow valve with stainless steel constructionand Teflon sleeve.

Standard Construction:

■ Aluminum housing

■ Bronze rotating control ring

■ Aluminum handle

■ Steel spiralox clamp rings

■ Stainless steel retaining rings

■ Four-ounce nylon sleeve

■ Also available in all stainless steelconstruction to meet specialapplication requirements

FV Series Dimensions

Model A B C D E F** G H J K

FV-4in 4 6 5 7/16 6 3/4 1 1/4 2 3/8 17/64

1/4 - 20 60˚ 30˚mm 101.6 152.4 138.1 171.4 31.8 60.3 6.7

FV-6in 6 9 1/8 8 1/2 8 1/2 1 3/8 3 1/2 9/32

1/4 - 20 60˚ 30˚mm 152.4 231.7 215.9 215.9 34.9 88.9 7.1

FV-8in 8 11 1/8 10 1/2 9 1/2 *1 3/8 4 1/2 9/32

1/4 - 20 60˚ 30˚mm 203.2 282.6 266.7 241.3 34.9 114.3 7.1

FV-10in 10 13 1/2 12 3/4 10 1/2 1 5/8 5 3/4 13/32

3/8 - 16 45˚ 221/2˚mm 254.0 342.9 323.8 271.5 41.3 146.0 10.3

FV-12in 12 16 15 1/4 11 3/4 1 3/4 6 3/4 13/32

3/8 - 16 45˚ 221/2˚mm 304.8 406.4 387.4 298.4 44.4 171.4 10.3

* 1 1/2 (38.1 ) for Stainless Steel

** Sleeve in full open position

D

Radius

ADia.G-Clearance

Holes

ClosedH-Tapped Holes

Open

BDia.

Control LeverMounting FlangeCap Screws

Flexible Sleeve

C - Dia. BoltCircle

C

Through Bolts

F**E

K

J

Weights

Model Net ShippingWeight Weight

lb kg lb kg

FV-4 2 1/2 1.1 5 2.2

FV-6 5 1/2 2.5 8 3.6

FV-8 6 1/2 2.9 9 4.0

FV-10 9 1/2 4.3 12 5.4

FV-12 15 3/4 7.2 17 7.7

FV Series Iris Flow Control Valve Specifications

Operation:FV Series Control Valves operate by rotating the control handle through a 180-degree arc to vary the size of the aperture from closed to fully open. To lock the valve in a selected position, turn the control handleclockwise and tighten.

FV Features:

■ Single sleeve

■ Twist lock handle permits lockingin unlimited positions

Custom Options:

■ Teflon coated housing

■ Special control handles

Material Handling Solutions

3

I r i s F l o w V a l v e s . c o m

SFV and DFV Series Iris Flow Control Valve Specifications

SFV and DFV Series Specifications

DFV-12 flow valve with urethane coated nylonsleeve.

Standard Construction:■ SFV/DFV-15 features completely

machined aluminum housing and one-piece Teflon-coated, machined aluminum control ring and handle

■ Other models feature cast housing andmolded, one-piece Celcon control ringand handle

■ Stainless steel retaining rings

■ Four-ounce nylon sleeve

Model A B C D E F** G H J K Notch Settings

SFV-4in 4 6 5 7/16 7 3/4 1 1/4 2 1/4 9/32 1/4 - 20 60˚ 30˚ 5 Standardmm 101.6 152.4 138.1 196.8 31.8 57.2 7.1

DFV-4in 4 6 5 7/16 7 3/4 1 1/4 2 1/2 9/32 1/4 - 20 60˚ 30˚ 5 Standardmm 101.6 152.4 138.1 196.8 31.8 63.5 7.1

SFV-8in 8 11 1/8 10 1/2 10 3/4 1 3/4 4 1/2 9/32 1/4 - 20 60˚ 30˚ 5 Standardmm 203.2 282.6 266.7 273.0 44.4 114.3 7.1

DFV-8in 8 11 1/8 10 1/2 10 3/4 1 3/4 5 9/32 1/4 - 20 60˚ 30˚ 5 Standardmm 203.2 282.6 266.7 273.0 44.4 127.0 7.1

SFV-12in 12 16 15 1/4 14 3/16 1 3/4 6 1/2 13/32 3/8 - 16 45˚ 22 1/2˚ 19 Standardmm 304.8 406.4 387.4 360.4 44.4 165.1 10.3

DFV-12in 12 16 15 1/4 14 3/16 1 3/4 7 13/32 3/8 - 16 45˚ 22 1/2˚ 19 Standardmm 304.8 406.4 387.4 360.4 44.4 177.8 10.3

SFV-15in 15 19 5/8 18 1/2 16 1/2 2 1/4 8 13/32 3/8 - 16 45˚ 22 1/2˚ 16 Standardmm 381 498.5 469.9 419.1 57.2 203.2 10.3

DFV-15in 15 19 5/8 18 1/2 16 1/2 2 1/4 8 1/2 13/32 3/8 - 16 45˚ 22 1/2˚ 16 Standardmm 381 498.5 469.9 419.1 57.2 215.9 10.3

** Sleeve in full open position

G-ClearanceHoles

Closed

H-Tapped Holes

Open Control LeverMounting Flange

Flexible Sleeve

FE

C-Dia. BoltCircle

BDia.

D

RadiusA

Dia.

KJ

**

Weights

Model Net Weight Ship Weight

lb kg lb kg

SFV-4 1 1/2 0.6 5 2.2DFV-4 1 3/4 0.7 5 2.2SFV-8 6 1/4 2.8 9 4.0DFV-8 7 3.1 10 4.5SFV-12 18 8.1 33 14.9DFV-12 19 8.6 34 15.4SFV-15 24 10.9 32 14.5DFV-15 25 11.3 33 14.9

OperationSFV/DFV Iris Flow Control Valves operate by rotating the control handle through a 180-degree arc. The trigger-type handle locks in multipleprecise aperture settings for rapid and frequent opening and closing. Allmodels (except the SFV/DFV-12 and SFV/DFV-15) include five aperturenotch settings at 45 degree intervals. The SFV/DFV-12 features 19 aperturenotch settings and the SFV/DFV-15 features 16 aperture notch settings.

SFV Features:■ Single sleeve

■ Trigger-type handle

DFV Features:■ Double sleeve especially suited

for fine, dusty materials and for leak proof operation

■ Trigger-type handle

Custom Options:■ Teflon coated housing

■ Stainless steel contact surfaces

4

Syntron ® 15-Inch Iris Flow Control ValveIdeal for bulk bag applications

■ Completely machined, durable aluminum construction withstainless steel retaining rings

■ One-piece Teflon-coated aluminum control ring and handlefor complete closure and long valve life

■ UHMW shims reduce friction

■ Trigger-type handle mechanism enables the valve to openand close rapidly and frequently

■ 16 standard notch settings, to control feed from full feed to trickle

■ Low maintenance—sleeve replacement is easy and inexpensive

■ Minimal mounting area and height required

■ Available with single or double sleeves

Syntron® 15 Control Valve and Optional Equipment

Adapter Spools and Wear Sleeves*When handling abrasive, fine or dusty materials, adapter spools and wearsleeves may be required. The spools are cast aluminum, drilled for installa-tion on the hopper flange and the valve. Iris Flow Control Valves installed onhoppers or chutes which discharge into open containers may require a singleadapter assembly consisting of one spool and one wear sleeve. Valvesinstalled in continuous chutes or ducts may require a dual adapter assemblyconsisting of two spools and one wear sleeve.

Spool

D - Hole SizeE - Number of Holes

G

F

Spool

Spool

C

BA

Single Adapter Assembly Dual Adapter Assembly

Flow Valve Single Adapter Assemble

Single adapter assembly and wear sleeve in open position.

15-Inch Application

*Available for all valves, call for dimensions and weights.

Material Handling Solutions

5

I r i s F l o w V a l v e s . c o m

Sleeve Selection Chart and Applications

Silicone 1/16" 14 oz.Buna-N 5 oz. Urethane Rubber (1.5 mm) Ballistic

4 oz. 2 oz. “Nitrile” 3 oz. Nomex Coated Coated Thick Neo- 8 oz. GradeNylon Nylon on Nylon Dacron Nylon Nylon ▲ Glass Cloth Linatex prene Teflon Nylon

Available for All Models ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓

Available for SFV 8 & 12 and

DFV 8 & 12 Only ✓

Available for SFV / DFV-15 Only ✓

Maximum Temperature 110˚C 110˚C 100˚C 110˚C 149˚C 88˚C 316˚C 66˚C 100˚C 177˚C 110˚C

Anti-Static 230˚F 230˚F 212˚F 230˚F 300˚F 190˚F 600˚F 150˚F 212˚F 350˚F 230˚F

✓✓ ✓

Dampness ✓ ✓ ✓✓ ✓ ✓ ✓ ✓ ✓

Food Handling ✓ ✓ ✓ ✓ ✓ ✓✓ ✓

Prevention of Contamination ✓ ✓ ✓ ✓ ✓✓ ✓

● ★ Slurry ✓ ✓ ✓✓ ✓ ✓ ✓

● ★ Air (Low Pressure & Velocity) ✓✓ ✓✓ ✓ ✓

★ Abrasive ✓✓ ✓ ■ ✓✓ ✓✓ ✓✓ ✓✓

More than 35 lb/cu ft (561 kg/m3) ✓✓ ✓ ✓ ■ ✓ ✓✓ ✓ ■ ✓ ✓ ✓ ■ ✓ ✓✓

Less than 35 lb/cu ft (561 kg/m3) ✓✓ ✓ ■ ✓✓ ✓ ■ ✓ ■

Lumpy Material ✓✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓✓

Fine Powder (1 – 50 mesh) ✓ ✓✓ ✓ ✓✓ ✓ ✓✓

Weak Acid Solids (At room temp) ✓✓ ✓✓

Alkali Solids (Room temp)

(Caustic Soda, Soda Ash, etc.) ✓ ✓ ✓ ✓ ✓ ✓

Solids Containing Organic Solvents

(Acetone, Alcohol, etc) ✓✓

Solids Containing Bleaching Agents ✓✓

Dry Soaps, Synthetic Detergents ✓ ✓ ✓✓ ✓

▲ FDA Approved

● For use where slight leakage can be tolerated.

■ Best where fine dusty materials are involved.

★ Consideration should also be given to a wear sleeve and spool adapter assembly.

“ ✓ ” indicates acceptable; “ ✓✓ ” indicates best choice of sleeve material.

– Syntron valves can close against a material headload of 2-5 psi (0.01 to 0.03 MPa) depending upon valve size and material characteristics.

– SFV and DFV Iris Flow Control Valves should not be used in applications exceeding 180˚F.

Use the following selection chart to obtain the proper sleeve for your application.

Makers of Syntron ® Iris Flow Valves

Sales and Manuf acturing112 Merle Lane, Suite 104Normal, IL 61761Tel: 866.919.0833Fax: 866.684.7495Email: info@irisflowvalves.com Web: IrisFlowValves.com

Caution: Syntron® Iris Flow Control Valves must be installed, operated and maintained in accordance with Flow Valves International Instructions. Failure to follow these instructions canresult in serious personal injury, property damage or both. Flow Valves International Instructionsaccompany the shipment of equipment. If additional copies are required, they are available, freeof charge from our Sales and Manufacturing facility.

Printed in USA ©Copyright 2007 • Flow Valves International

Corporate Headquarters500 Davis Street, Suite 600Evanston, IL 60201Tel: 847.866.1188Fax: 847.866.1199Email: info@irisflowvalves.comWeb: IrisFlowValves.com

Service and Support

At Flow Valves International, we understand that good, reliable equipment—operating at peak performance—is crucial to your bottom line. That’s why we’recommitted to giving our customers value—before, during and after the sale.

Once you’re up and running, our Syntron® Service Team will keep you on topand moving ahead. We’re on call—wherever and whenever you need us forparts and service.

Dependable equipment is critical to your operation, and your success is criticalto our success. At Flow Valves International, your satisfaction is our number onepriority. You can rely on us.