1672 Pressure Sensing Valve
7Pages

Pressure Sensing Valve Model 1672 Overview AMOT Model 1672 Pressure Sensing Valves are 2-Way normally open sensors (closed under satisfied operation conditions) which are opened by the sensed pressure decreasing or increasing past the trip point. Dual purpose construction (trip on rising or falling pressure) provides a wide range of applications and permits easy field adjustment or changeover from trip on falling pressure to trip on rising pressure. The valve is snap-acting and suitable for hydraulic or gas control systems which up to 5.5 bar (80 psi) maximum control pressure. Typical applications l Engines l Lubricating oil l Cooling water l Combustion air l Control air l Fuel oil Model 1672 Pressure Sensing Valve Key features and benefits l Easy field adjustment l Compatible in hydraulic or gas systems l Factory set l Gulfproofed finish and Viton seals l Pneumatic lockout available l Diaphragm sensor for pressure ranges from 0.3 - 21.7 bar (5 - 315 psi) l Piston sensor for pressure ranges from 1 - 248 bar (15 - 3600 psi) l Works in conjunction with other AMOT devices

Pressure Sensing Valve - Model 1672 Case Vent Sensed Process fcTo next Sensor or Master Shut Down Sensed Process (Separate Case Pneumatic Lockout Systems only) The operation of the 1672 Pressure Sensing Valve is simple and straightforward. Pressure ranges 1, 2 and 3 use a diaphragm sensor, piston sensor. The sensed pressure moves the diaphragm or piston operator against the larger adjusting spring. The motion is transmitted to the valve through a lever and fulcrum pin which operates the valve pushrod. Location of the pin in one of two holes in the case determines the rising or falling...

Pressure Sensing Valve - Model 1672 Specification Housing Cast aluminum Internal parts Aluminum and plated steel Control valve Aluminum and stainless steel Standard valve seat & O-ring seal Standard diaphragm (ranges 1 - 3) Piston & Cylinder (ranges 4 - 7) Stainless steel Piston seal (ranges 4 -7) Flow coefficient Maximum valve operating pressure Range 1 with lockout Connections All valve connections are made with ¼” pipe thread fittings. Apply a quality thread sealant such as Locktite™ Pipe Sealant to pipe thread connections. This sealant must NOT enter the valve passages. Teflon thread...

Pressure Sensing Valve - Model 1672 Dimensions 2.8 MAX. (69.9) MODEL 1672P EXTERNALLY ADJUSTABLE SENSED PRESSURE CONNECTION MARKED "P" MODEL 1672(_)(_) A, F, J OR M SENSED PRESSURE CONNECTION MARKED "P" MODEL 1672(_)IG, H, R OR S PNEUMATIC LOCKOUT SENSED PRESSURE CONNECTION MARKED "P" HOUSING VENT TO NEXT SENSING DEVICE VALVE OUTLET LOCKOUT PRESSURE 250 PSI (1723 kPa) MARKED "L" TWO MOUNTING HOLES TAPPED 0.4 -16 UNC THROUGH CAN TAKE 0.25 O.D. BOLTS. (6.4) Differential is the change in sensed pressure above or below the trip point that is required to open the valve and cause an AMOT...

Pressure Sensing Valve - Model 1672 How to order Use the table below to select the unique specification of your 1672 Pressure Sensing Valve (-AA) = Standard (MTO) = Special requirements Made to order Basic model number Table A Sensed Pressure Ranges trip rising falling Spring Code rising falling rising falling rising falling rising falling rising falling rising falling rising falling When ordering please specify the following: 1. Basic model number 2. Tripping pressure 3. Tripping action: a. to trip on rising pressure b. to trip on falling pressure 4. Table B Table C Thread, Finish and Seal...

Pressure Sensing Valve - Model 1672 Maintenance Properly applied and installed, Model 1672 series valves require minimal maintenance. An inspection of the unit at yearly intervals is adequate to detect and make provision for normal wear. The diaphragm seals and o-rings should be checked for wear, damage, and hazardous seals and o-rings with Dow Corning no. 33 Grease (AMOT part number 911L001) before installing them. Other internal parts should be inspected for excessive wear or damage or replaced as necessary. Use caution on assembly of seal (ranges 4 - 7) so the edge is not damaged. Cycle...

AMOT USA 8824 Fallbrook Dr Houston TX 77064 USA AMOT Western Way Bury St Edmunds Suffolk, IP33 3SZ England Asia and Australasia AMOT Shanghai Rm 4102 - 4104 United Plaza 1468 Nanjing Road West Shanghai 200040 China Tel +86 (0) 21 6279 7700 Fax +86 (0) 21 5237 8560 Email shanghai@amot.com AMOT Singapore 10 Eunos Road 8 #12-06 Singapore Post Centre Singapore 408600 Tel +65 6408 6265 Fax +65 6293 3307 Email singapore@amot.com