IOS6 Integral Orifice System

	Reliability is greatly enhanced with the presence of a tell-tale system of vent valves that detect leakage around the orifice or bypass valve The removable orifice carrier allows convenient servicing of the orifice and seals without disturbing the piping Unimount design mounts directly to a 2" pipe stand permitting servicing or removal of the transmitter without disturbing flow or piping Can be mounted directly in-line Slotted hex handles discourage tampering but operate with a simple 90º turn Adjustable packing nut stops interport and stem leakage Large 5/16" straight-thru, roddable porting
The D/A Integral Orifice System, model IOS6 is a complete mounting, metering and manifold system that accepts any standard DP transmitter and utilizes the standard Foxboro orifices. This unique system was designed around recommendations from customers experiencing problems with other integral orifice systems.
Operation	Specifications
Normal Mode Block valves open and bypass closed Bypass Mode Block valves closed and bypass open Zero Mode Bypass open and one block valve closed	Materials of Construction:  Body: 316SS  Plugs: 316SS  Valve Seals: Teflon or Ryton  Vent Valves: 303SS with Kel-F seat  Bleed Valves: 303SS body with 316SS trim  Handles: 303SS  Orifice Carrier: 316SS with Teflon seals Exotic materials: Hastelloy C, Monel, Alloy 20, etc. consult factory. Max Ratings:  Teflon:   3000psi @ 150ºF   1500psi @ 220ºF  Ryton:   3000psi @ 150ºF   1500psi @ 450ºF) Connections:  Inlet / Outlet:  1/2" FNPT  Instrument:  Flanged on 2-1/8" centers Flow Rate:  The IOS6 utilizes all Foxboro standard orifices up  to 0.159" which gives 2.25 GPM @ 400ºW.C.  Refer to Foxboro flow charts
How to Change Orifice
	Open bypass valve and close both block valves Remove orifice carrier from valve body Remove orifice from end of carrier with cushioned pliers or some other method that will not damage orifice Remove and check process seal for damage - replace if necessary Reinstall process seal and gently tap new orifice onto end of carrier with care Reinstall orifice carrier into valve body Open both block valves and close bypass valve

Units are supplied with 2 U-Bolts and 4 transmitter mounting bolts

Code	Integral Orifice System
IOS6	Flanged (instrument) x 1/2" FNPT (process)
|	Code	Seal
|	T	Teflon
|	R	Ryton
|	|	Code	Material
|	|	SS	Stainless Steel, 316
|	|	|	Code	Options
|	|	|	OCJ	Jeweled Integral Orifice
|	|	|	|
				Model Number

D/A Manufacturing Co., Inc.
Hwy 86 East or P.O. Box T
Tulia, TX  79088-0920 USA
Phone: (806)995-2316
FAX: (806)995-4601