Control Products 91000XT User Manual

12950 W.Eight Mile Road • Oak Park,MI 48237-3288 • 248/399-8000 • FAX:[phone] • www.tr erice.com

6/1/2001

25

Tank Thermostat 91000XT Series

for Oil Field Heaters,Treaters & Separators

The 91000XT Tank Thermostat is especially
designed to control the temperature of heaters,
treaters and separators within the petroleum
industry. It is entirely self-contained, requires no
external power source, and is the most widely
preferred unit of its kind. When installed in a treater,
the normally open valve will automatically close off
the flow of gas as temperature increases, thereby
regulating temperature within the treater. The
Trerice 91000XT is ruggedly constructed with a
heavy duty, die cast aluminum actuator housing. Its
single seated, cast-iron valve body is fitted with a
stainless steel plug assembly and soft seating Viton
o-ring to provide tight shut-off.

Warning: This valve may only be installed in outdoor
applications.The Teflon v-ring packing will allow
fugitive emissions to escape.Improper application may
cause failure of the valve, resulting in possible personal
injury or property damage.

For applications where the process media may be
corrosive or contained under pressure, the use of a
thermowell is required to prevent damage to the sensing
bulb and facilitate its removal from the process.

Self-Operating
Design

Heavy Duty
Die Cast
Aluminum
Housing

3

/4" and 1 NPT

Valve Sizes
Soft Seated

Valve for Tight
Shut-Off

Model

91000XT

Power Requirements

Fully self-contained –
no external power required

Housing

Die cast aluminum, epoxy
powder coated blue finish

Set Point Scale

Intergral to housing

Bellows

High pressure brass, corrosion
resistant, tin plated finish

Adjustment Screw

Brass

Adjustment Screw Bushing

Lubricant impregnated sintered
bronze

Range Adjustment Spring

Cadmium plated

Overrange Protection

Upper range limit +100°F for
temporary situations

Thermal System

Bulb: Copper, .80" x 8", with
union connection for thermowell

Capillary: Copper, available in
10' or 20' lengths

Thermowell

Steel, 1 NPT connection

Valv e

Single seat, normally open
Body: Cast-iron
Trim: Stainless steel plug

assembly with soft seating
Viton o-ring, iron seat

Port Size:

1

/2"

Connection:

3

/

4

NPT or 1 NPT

threaded ends

Approximate Shipping
Weight

10.3 lbs [4.68 kg]

Sample Order Number: 91000XTCX011002-X75
91000XT C X01 10 02 X75

Model Level of Assembly Range Capillary Length Thermowell – Valve Size

91000XT A Actuator Only See Standard 10 10 Feet 02 Steel Thermowell X753/4NPT

C Complete Thermostat Available Ranges 20 20 Feet Omit if None X10 1 NPT

(over) Omit if

Actuator Only

How to Order

Specifications

91000XT pictured

Temperature Regulators

12950 W.Eight Mile Road • Oak Park,MI 48237-3288 • 248/399-8000 • FAX:[phone] • www.tr erice .c om

1/1/2001

26

Tank Thermostat 91000XT Series

for Oil Field Heaters,Treaters & Separators

Standard Available Ranges

Range Code Nominal Range Recommeded Working Span Bulb Length (A)

X13 85° to 115°F& 30° to 45°C85° to 115°F&30°to 45°C8"
X11 80° to 140°F& 25° to 60°C110° to 140°F& 45° to 60°C8"
X04 110° to 140°F& 45° to 60°C110° to 140°F& 45° to 60°C8"
X15 130°to 160°F& 50° to 70°C130° to 160°F& 50° to 70°C8"
X01 110° to 190°F& 45° to 90°C160° to 190°F& 70° to 90°C8"
X03 125°to 215°F& 55° to 100°C180° to 210°F& 80°to 100°C8"
X12 200°to 280°F& 95° to 135°C250° to 280°F & 120° to 140°C8"
X10 225°to 315°F&110° to 155°C280°to 310°F & 135° to 155°C8"
X16 310°to 365°F & 155° to 185°C310°to 365°F & 155° to 185°C8"
X14 295°to 420°F & 145° to 215°C360°to 420°F & 180° to 215°C8"
X08* 45° to 115°F& 10° to 45°C85° to 115°F& 30°to 45°C 20"
X07* 65° to 140°F& 20° to 60°C110° to 140°F& 45° to 60°C 20"

*Except for Range Codes X07 and X08, the actuator housing and capillary tubing must always be exposed to a temperature lower than the required
control point for proper thermostat operation.

Valve Capacities

Gas (Specific Gravity = 0.6)

Inlet Pressure (psig) 5 10 20 30 40 50
Outlet Pressure (psig) 4 2 0 8 5 0 15 10 5 25 20 10 30 20 15 40 30 25
Capacity (scfh) 970 1585 1935 1450 2140 2700 2685 3480 3870 3100 4120 5030 4650 6000 6200 5320 6870 7250

8.93

[227]

12.16
[309]

SOFT SEATING

VITON O-RING

5.68

[144]

Ø

.80

[20]

8.00

[203]

3.63
[92]

1.25-18 UNEF

A

BULB

LENGTH

P EXTERNAL THREAD

1 NPT

WRENCH

ALLOWANCE

U INSERTION LENGTH

8" BULB = 8.38 [213]

20" BULB = 20.38 [518]

1.00
[25]
THREAD ALLOWANCE

1.06 [27]

Sample Order Number: 53-5L3
53 5 L 3

Thermowell Style – External Thread (P) Bulb Length Material

53 Tank Thermostat 5 1 NPT L 8" Bulb 3 Steel

We 20" Bulb

How to Order

All dimensions are nominal.
Dimensions in [ ] are in millimeters.

Temperature Regulators