Owner's manual
6
2600 Emrick Blvd • Bethlehem, PA 18020 • USA • 800-922-0085 • www.warrencontrols.com
3800_IOM_RevB_0513
PERFORMANCE CHARACTERISTICS
Body Pressure —
Temperature Rating
conform to ANSI
based on body/
flange rating and
body material. As the
fluid temperature
increases, the
maximum allowable
internal pressure
decreases. Verify
maximum pressures
and temperatures
prior to selecting
body material and
body/flange rating.
3800 with Metal Seats in any flow direction or
TTZ Ceramic Seats Flow-To-Open
ANSI Class IV
3800 with TTZ Ceramic Seats Flow-To-Close
Class IV+
Class IV+ is a proprietary designation of Warren
Controls and is not an ANSI/FCI classification.
3800 with PEEK or TFE Soft Seats
ANSI Class VI
NOTE: Approaching limits for continuous
use will reduce trim life. For continuous
use, stay within half of rated maximum.
NOTE ON BEARINGS: PEEK
Bearings should not be used for
temperatures above 450ºF or flowing
differential pressure above 300 PSIG.
BODY PRESSURE-TEMPERATURE RATINGS:
Temp. (F) 150 FLG
WCB
300 FLG
WCB
150 FLG
CF8M
300 FLG
CF8M
+32° To 100° 285 740 275 720
150° 272 710 255 670
175° 266 695 245 645
200° 260 680 235 620
225° 252 673 230 605
250° 245 667 225 590
275° 237 661 220 575
300° 230 655 215 560
325° 222 650 210 548
350° 215 645 205 535
375° 207 640 200 526
BODY PRESSURE-TEMPERATURE RATINGS:
Temp. (F) 150 FLG
WCB
300 FLG
WCB
150 FLG
CF8M
300 FLG
CF8M
400° 200 635 195 515
450° 185 620 182 497
500° 170 605 170 480
550° 155 587 155 465
600° 140 570 140 450
650° 125 550 125 440
700° 110 530 110 435
750° 95 505 95 425
800° 80 410 80 420
Pressure ratings are PSIG
For applications below 32º consult factory.
SHUT-OFF (ALLOWABLE SEAT LEAKAGE) CLASSES
Leakage
Relative
Seat
Maximum
Seat Leakage
Test
Fluid
Test
Pressure
Relative
Seat
Tightness
Class II 0.5% of rated CV Water 45 to 60 PSI 1
Class III 0.1% of rated CV Water 45 to 60 PSI 5
Class IV 0.01% of rated CV Water 45 to 60 PSI 50
Class IV+
0.0015 ml/min/inch
of trim size/∆P(PSI)
Water Max Operating ∆P 150,000
Class V
0.0005 ml/min/inch
of trim size/∆P(PSI)
Water Max Operating ∆P 300,000
Class VI Class VI about 0.9 ml/min* Air 50 PSI 600,000
*Leakage rate varies by nominal port diameter, refer to the Standard
ANSI/FCI 70.2.
Body Pressure-Temperature Ratings
Flowing Differential Pressure
Shut-off Classes