MODEL 7702 BACK PRESSURE REGULATOR
Taylor Valve Technology, Inc
BACK PRESSURE REGULATOR / RELIEF VALVE Application Recommended for a variety of oil and gas production applications, including the following: Paraffin A common cause of paraffin build-up is gas breaking out of solution in the tubing string. Through use of this regulator, constant pressure can be maintained on the oil column, permitting gas bubbles to be pumped out of the string before they rupture and break out of solution.
Heading up This regulator, installed on wells that tend to head up and flow, will assure a full tubing string by maintaining constant pressure on the oil column. This assures continuous lubrication of the polish rod, adding to the life of the stuffing box rubbers. This also enhances efficiency of the bottom hole pump.
By-Pass to Casing This regulator can also be used as a by-pass to the casing in event lead lines should freeze or get plugged.
Features Compact Design The Taylor Model 7702 is a Back Pressure Regulator and a Liquid Pressure Relief Valve. It is an excellent and economical device for automatic relief and control of pressure in liquid service. Control is accomplished by the upstream pressure acting on the piston area and the spring compression, which causes the valve to open at a field adjusted set pressure. The orifice opening will vary based on an increase or decrease in the upstream pressure. The Taylor Back Pressure Regulator is offered in 1, 2 and 3 inch sizes. The product is suitable for pressure settings up to 1500 psi and operating pressures of 5000 psi.
Easy to install in the field and minimum envelope for installation in tight spaces
Field Repairable The only truly field repairable 7702 back pressure regulator
Corrosion Resistant Internals Increases meantime between service with all stainless steel internals.
304SS Springs Provides the most reliable material for continuos cycling operation, very low potential effect due to temperature changes and corrosion resistant
Solutions for critical fluid control . . . The balanced design of this product gives exceptional control for both relief and pressure requirements
MODEL 7702 BACK PRESSURE REGULATOR
Taylor Valve Technology, Inc
THE BASIC PRINCIPLE
SPECIFICATIONS
The valve uses spring force on a piston to hold a desired back-pressure. The piston seal friction acts as a movement dampener to prevent piston chatter, common with conventional back-pressure valves. The simple pressure balance method means that downstream pressure variations cannot change the valves’s set point. This is particularly valuable in preventing a production flow reduction .
Operating Pressure: Set pressure: Temperature: Sizes: End Connections: Body: Piston: Seat: O-Rings:
1” Reg. - 12 3/4” 32.4 cm 2” Reg. - 14 3/4” 37.5 cm 3” Reg. - 21” 53.3 cm
OPTIONAL MATERIALS The Taylor BPR can be manufactured to almost any meet requirement below indicates the most common optional configurations:
1” Reg. - 3 1/4” 9.5 cm 2” Reg. - 5 ½” 14 cm 3” Reg. - 8 ½” 21.6 cm
Model 7702 Differential Type, Inline, Back-Pressure Regulator - Steel Body - 2” NPT Part Number
Model Number
3600 PSI 15 to 1500 PSI -20 to 400 oF 1”, 2” and 3” Threaded and Flanged Carbon Steel Stainless Steel Stainless Steel Viton
Spring Range
Adjustment Screw Color
77-200137
7702-2-LLL-S
0-100
Yellow
77-200237
7702-2-LL-S
0-200
Red
77-200437
7702-2-L-S
0-500
Orange
77-200537
7702-2-S
0-900
White
77-200737
7702-2-H-S
0-1500
Blue
Model 7702 Balanced Type, Inline, Back-Pressure Regulator - Steel Body - 2” NPT
Operating Pressure: Set pressure: Temperature: Sizes: End Connections: Body: Piston: Seat: O-Rings:
5000 PSI 50 to 2500 PSI -65 to 400 oF 1”, 2” and 3” Victaulic or Weld Bevel Stainless Steel Tungsten Carbide Tungsten Carbide Any o-ring material
SPRING LIST Part Number
Spring Range
Spring Material
05-011314
0-100
304 SS
05-011414
0-200
304 SS
05-011514
0-500
304 SS
Model Number
Spring Range
Adjustment Screw Color
05-010114
0-900
304 SS
77-210137
7702-2-LLL-S
0-100
Yellow
05-010213
0-1500
304 SS
77-210237
7702-2-LL-S
0-200
Red
77-210437
7702-2-L-S
0-500
Orange
77-210537
7702-2-S
0-900
White
77-210737
7702-2-H-S
0-1500
Blue
Part Number
MODEL 7702 BACK PRESSURE REGULATOR
Taylor Valve Technology, Inc Bill of Material KEY No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
DESCRIPTION Thread Protector O-Ring Jam Nut Flat Washer Thread Seal Spring Housing Adjustment Screw Spring Keeper Spring O-Ring Cage Backup Ring O-Ring Piston O-Ring Seat Tee O-Ring Seat Holder Pipe Plug Pipe Nipple Drive Screw Data Plate
Regulator Types: QTY 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 2 1 1 1 2 1
Differential Type Downstream pressure affects set pressure on this type. The valve “sees” differential pressure across the valve. This valve should be used where downstream pressure is low and relatively constant.
Balanced Type Downstream pressure is balanced on this type. The valve “sees” and regulates only upstream pressure. This type should be used where superior upstream pressure regulation is required in spite of downstream pressure changes or where downstream pressure exceeds 10% of set pressure.
1 2 3 4
Specifications End Connections 1”, 2", 3” NPT Set Pressure Range15 to 1500 psi Maximum Operating Pressure5000 psi Operating Temperature Range-20°F to 450°F Field adjustable pressure ranges and a choice of four pressure ranges. Springs are either stainless steel, or inconel as required by the application. The standard nipple is schedule 80, and the standard Tee is forged steel.
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Note: The conversion from balanced to differential requires the addition of an 1/8 inch pipe plug as indicated on housing and the removal of the O-Rings and Backup Rings on the piston
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TAYLOR SERIAL No. VALVE TECHNOLOGY PART No.
20
SPRING RANGE MATERIAL ORIFICE SIZE MANUFACTURED DATE
21
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MODEL 7702 BACK PRESSURE REGULATOR
Taylor Valve Technology, Inc
Exploded View 11
Bill of Material KEY No.
DESCRIPTION
Thread Protector O-Ring Jam Nut Flat Washer Thread Seal Adjustment Screw Spring Housing Spring Keeper Spring Tee O-Ring Cage Piston Backup Ring O-Ring Seat Ring O-Ring Seat Holder O-Ring Pipe Plug Pipe Nipple Piston O-Ring Tungsten Carbide End Bolt
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Material
Carbon Steel Pltd FKM Carbon Steel Carbon Steel Carbon Steel/Buna Carbon Steel Pltd Carbon Steel Stainless Steel Stainless Steel Carbon Steel FKM Stainless Steel Stainless Steel PTFE FKM Stainless Steel FKM Stainless Steel FKM Carbon Steel Carbon Steel Stainless Steel FKM Tungsten Carbide Stainless Steel
1 12 2 3 4 5 13 6
14 15 16 17 7
18 8 19 9
OPTIONAL TUNGSTEN CARBIDE TRIM
20
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