Description
Overview
The Type 6600 Large Flow Capacity Volume Booster is a high-flow 1:1 signal-to-output pneumatic relay designed to increase the stroking speed of large-volume valve actuators. Constructed with a rugged 316 stainless steel housing, bolting, and trim, the Type 6600 combines rapid actuator response with corrosion-resistant construction for demanding industrial and process control applications.
The Type 6600 is suitable for both diaphragm and piston actuators. A fixed deadband and integral adjustable bypass valve allow small incremental downstream pressure adjustments without opening the main booster valve, while larger signal changes activate the booster to provide the high airflow required for rapid actuator movement. The bypass can be adjusted to tune dynamic response and provide stable operation across a wide range of actuator sizes.
Available with 3/4″ or 1″ NPT supply and output ports, the Type 6600 provides forward flow coefficients up to Cv 9.0 and exhaust capacity up to 150 SCFM (4,245 Nl/min). Additional features include a 3/4″ NPT high-output exhaust port, two gauge ports, an optional feedback port, low-temperature capability, and IEC 61508 SIL 3 certification.
Key Features
- Large-flow pneumatic volume booster
- 1:1 signal-to-output ratio
- 316 stainless steel housing
- 316 stainless steel bolting and trim
- Stainless steel internal components
- Designed for rapid actuator stroking
- Suitable for diaphragm and piston actuators
- Integral adjustable bypass valve
- Fixed deadband for stable control
- Small incremental signal changes can bypass the primary valve
- High forward and exhaust flow capacity
- Soft valve seat design provides tight shutoff
- Helps eliminate leakage during steady-state operation
- 3/4″ or 1″ NPT supply and output porting
- 3/4″ NPT high-output exhaust port
- Exhaust capacity up to 150 SCFM (4,245 Nl/min)
- Two 1/4″ NPT gauge ports
- Optional feedback port
- Standard operation up to 200°F (93°C)
- Low-temperature option down to -62°F (-52°C)
- Optional BSP porting on 1″ models
- ATEX 2014/34/EU option available
- IEC 61508 SIL 3 certified
Performance Characteristics
- Signal-to-Output Ratio: 1:1
- Maximum Supply Pressure: 250 psig (17.0 bar)
- Maximum Signal Pressure: 150 psig (10.0 bar)
- Output Accuracy: 2.0% of span
- Deadband: Under 0.2 psig (0.01 bar)
- Supply Pressure Effect: 0.3 psig (0.02 bar) for a 100 psig (7 bar) supply pressure change
- 3/4″ Forward Flow Coefficient (Cv): 8.0
- 3/4″ Exhaust Flow Coefficient (Cv): 8.0
- 1″ Forward Flow Coefficient (Cv): 9.0
- 1″ Exhaust Flow Coefficient (Cv): 8.0
- 3/4″ Exhaust Capacity: 150 SCFM (4,245 Nl/min)
- 1″ Exhaust Capacity: 150 SCFM (4,245 Nl/min)
- Standard Temperature Range: -40°F to 200°F (-40°C to 93°C)
- Low Temperature Option: -62°F to 194°F (-52°C to 90°C)
- Signal Port: 1/4″ NPT
- Supply/Output Ports: 3/4″ or 1″ NPT
- Exhaust Port: 3/4″ NPT
- Gauge Ports: Two 1/4″ NPT
- Optional Feedback Port: 1/4″ NPT
- BSP Porting: Available on 1″ ported units
- Weight: 15.0 lbs (6.80 kg)
The Type 6600 provides a maximum forward Cv of 8.0 with 3/4″ porting and 9.0 with 1″ porting, while both configurations provide an exhaust Cv of 8.0. Exhaust capacity is rated at 150 SCFM (4,245 Nl/min) with downstream pressure 5 psig above a 20 psig setpoint.
How to Select the Right Configuration
Selecting the correct Type 6600 configuration depends on the required airflow, port size, operating temperature, feedback requirements, process environment, and connection standard.
- Select the 3/4″ NPT model for applications requiring a forward Cv of 8.0 and exhaust Cv of 8.0
- Select the 1″ NPT model for applications requiring the maximum forward Cv of 9.0
- Choose the Type 6600 when 316 stainless steel construction is required for increased corrosion resistance
- Select the Low Temperature option for operation from -62°F to 194°F (-52°C to 90°C)
- Select the Feedback Port option when an external pressure feedback connection is required
- Select BSP Porting when BSP connections are required on a 1″ ported unit
- Select the ATEX option when ATEX 2014/34/EU compliance is required
- Use the integral bypass valve to tune dynamic response for the actuator size and application
- Select stainless steel installation accessories when corrosion resistance is required throughout the assembly
For additional guidance:
Applications
The Type 6600 Large Flow Capacity Volume Booster is designed for pneumatic control systems requiring high airflow, fast actuator response, and stainless steel construction.
- Large pneumatic control valves
- High-volume valve actuators
- Diaphragm actuators
- Piston actuators
- Valve positioner and actuator systems
- Fast-stroking control valves
- Throttling control applications
- Process control systems
- Industrial automation systems
- High-flow pneumatic systems
- Large process valve assemblies
- Corrosive industrial environments
- Outdoor process installations
- Safety-related valve control systems
- Applications requiring external pressure feedback
Principle of Operation
The Type 6600 operates as a 1:1 pneumatic relay between the control signal and actuator. Signal pressure acts on the internal diaphragm assembly, while output pressure provides opposing feedback. When the difference between signal and output pressure exceeds the fixed deadband, the booster responds by opening the appropriate supply or exhaust flow path.
The integral adjustable bypass allows small signal changes to reach the actuator without opening the primary booster valve. Larger signal changes activate the main valve, allowing high-volume supply air to enter the actuator or downstream air to exhaust rapidly. This arrangement allows the Type 6600 to increase actuator stroking speed while maintaining stable throttling control.
The principle-of-operation diagram on page 2 of the specification sheet illustrates the internal supply, signal, atmospheric, and output pressure paths through the booster.
Models & Configurations
Type 6600 Models
- 6600-ES = 3/4″ NPT, 316 Stainless Steel Housing
- 6600-FS = 1″ NPT, 316 Stainless Steel Housing
Available Options
- F = Feedback Port
- L = Low Temperature Operation
- U = BSP Porting, available for 1″ ported units only
- X = ATEX 2014/34/EU
The Type 6600 is offered in 3/4″ and 1″ NPT configurations with a 316 stainless steel housing. The ordering table also identifies feedback, low-temperature, BSP porting, and ATEX options. The Stainless Steel Trim option applies only to the aluminum Type 6500 because stainless steel construction is standard on the Type 6600.
Accessories
- Zinc Plated Steel Mounting Bracket: P/N 449-542-040
- 316 Stainless Steel Mounting Bracket: P/N 449-542-041
- 3/4″ NPT Plated Steel Exhaust Screen/Muffler Fitting: P/N 445-761-006
- 3/4″ NPT 316 Stainless Steel Exhaust Screen/Muffler Fitting: P/N 445-761-007
- 0-160 psi (0-11 bar) Stainless Steel Gauge: P/N 445-725-021
Materials of Construction
- Housing: 316 Stainless Steel
- Bolting: 316 Stainless Steel
- Other Trim: 316 Stainless Steel
- Internal Components: Stainless Steel
- Standard Elastomers: Nitrile
- Low Temperature Option Elastomers: Silicone
The Type 6600 uses 316 stainless steel for the housing, bolting, and other trim, with stainless steel internal components. This construction distinguishes it from the aluminum Type 6500 and provides a corrosion-resistant option for demanding industrial environments.
Technical Resources
- Product Data Sheet
- Installation Information
- CAD Models
- IEC 61508 SIL 3 Certification
- Product Certifications
- Engineering Support Resources
FAQs
What is the Type 6600 volume booster used for?
The Type 6600 is used to increase airflow to large pneumatic valve actuators, helping diaphragm and piston actuators stroke more rapidly in response to control signals.
What is the Type 6600 made from?
The Type 6600 features a 316 stainless steel housing, bolting, and trim with stainless steel internal components.
What is the difference between the Type 6500 and Type 6600?
The Type 6500 uses an aluminum housing and aluminum internal components, while the Type 6600 uses a 316 stainless steel housing, bolting, and trim with stainless steel internal components. Their primary pneumatic performance specifications are otherwise shared within the Type 6500/6600 series.
What is the signal-to-output ratio of the Type 6600?
The Type 6600 provides a 1:1 signal-to-output pressure ratio.
What does the adjustable bypass valve do?
The adjustable bypass valve allows small incremental signal changes to reach the actuator without opening the primary booster valve. It can be adjusted to tune dynamic response and provide stable operation across different actuator sizes.
What port sizes are available for the Type 6600?
The Type 6600 is available with 3/4″ or 1″ NPT supply and output ports. BSP porting is available as an option on 1″ models.
What is the flow coefficient of the Type 6600?
The 3/4″ Type 6600 has a forward Cv of 8.0, while the 1″ model has a forward Cv of 9.0. Both configurations have an exhaust Cv of 8.0.
What is the exhaust capacity of the Type 6600?
Both the 3/4″ and 1″ Type 6600 configurations provide exhaust capacity up to 150 SCFM (4,245 Nl/min) under the specified test conditions.
What is the maximum supply pressure?
The maximum supply pressure for the Type 6600 is 250 psig (17.0 bar).
What is the deadband of the Type 6600?
The Type 6600 has a deadband of less than 0.2 psig (0.01 bar).
What is the operating temperature range?
The standard Type 6600 operates from -40°F to 200°F (-40°C to 93°C). The low-temperature option provides operation from -62°F to 194°F (-52°C to 90°C).
Is a feedback port available?
Yes. An optional 1/4″ feedback port is available for applications requiring an external pressure feedback connection.
Is the Type 6600 SIL 3 certified?
Yes. The Type 6500/6600 Large Flow Capacity Volume Booster series is IEC 61508 SIL 3 certified.
Is an ATEX option available?
Yes. An ATEX 2014/34/EU option is available for the Type 6600.
