The Spirax Sarco FTGS14 is a stainless steel ball float steam trap designed for continuous condensate discharge and start-up air venting in steam heat transfer equipment. The valve body is made of CF8 austenitic stainless steel and is available with flanged or BSP/NPT threaded horizontal connections, with a maximum operating pressure of 14.6 bar g for saturated steam. It features an integral automatic air vent and an optional SLR steam lock release device to address condensate accumulation caused by steam locking.
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Spirax Sarco FTGS14 Stainless Steel Ball Float Steam Trap (In-Line Maintenance)
Stainless steel ball float steam trap for condensate drainage from heat transfer equipment, with optional steam lock release device.
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Model confirmation
Confirm model, connection and key options before ordering.
After-sales support
After-sales communication support is provided according to the order agreement.
Specifications
- Valve Type
- Float steam trap
- Connection Method
- Flanged connection (DN15, DN20, DN25) or BSP/NPT threaded connection (1/2", 3/4", 1")
- Flange Standard
- EN 1092 PN16, ASME (ANSI) 150, JIS/KS 10
- Connection Type
- BSP or NPT threaded connection
- Installation Connection Orientation
- Horizontal connection, R-L or L-R flow direction
- Valve Body Material
- Austenitic stainless steel EN 10213-4 (1.4308) ASTM A351 CF8
- Valve Cover Material
- Nickel-plated ductile cast iron DIN 1693 GGG 40
- Maximum Allowable Pressure PMA
- 16 bar g @ 120°C
- Maximum Allowable Temperature TMA
- 250°C
- Minimum Allowable Temperature
- -10°C
- Maximum Operating Pressure for Saturated Steam PMO
- 14.6 bar g
- Maximum Operating Temperature TMO
- 250°C @ 13.8 bar g
- Minimum Operating Temperature
- 0°C
- Maximum Differential Pressure ΔPMX
- 4.5 bar (FTGS14-4.5), 10 bar (FTGS14-10), 14 bar (FTGS14-14)
- Designed Maximum Cold Hydraulic Test Pressure
- 24 bar g
- Air Vent Capsule Type
- BP99/32
- Permitted Superheat
- 150°C@0bar g, 50°C@32 bar g
- Air Venting Function
- Built-in automatic air vent
- Steam Lock-Breaking Device
- Optional SLR device to prevent steam locking
- Filtration Function
- Optional built-in strainer, model FTGS14X
- Pressure Equipment Directive
- 97/23/EC
Application scenarios
Condensate Discharge and Start-Up Air Venting for Steam Heat Exchange Equipment
Used for condensate discharge from steam-heated heat exchange equipment. The float-operated design discharges condensate, while the built-in automatic air vent removes air during equipment start-up to support normal operation.
Condensate Drainage from Steam-Heated Equipment at Risk of Steam Locking
Used for condensate discharge from steam-heated equipment at risk of steam locking. An optional SLR steam lock-breaking device can be fitted to help prevent condensate accumulation caused by steam locking.
Selection points
Stainless Steel Body and Nickel-Plated Ductile Iron Cover
The valve body is made of austenitic stainless steel EN 10213-4 1.4308 or ASTM A351 CF8, while the cover is made of nickel-plated ductile iron. This configuration may be considered when selecting based on body and cover materials.
Selection by Maximum Differential Pressure Rating
FTGS14 is available with maximum differential pressures of 4.5 bar, 10 bar, and 14 bar, corresponding to FTGS14-4.5, FTGS14-10, and FTGS14-14 respectively. Select the appropriate model according to the actual differential pressure.
Superheated Steam Operating Limits of BP99/32 Capsule
FTGS14 uses a BP99/32 capsule, allowing superheat of 150°C at 0 bar g and 50°C at 32 bar g. This can be used to verify steam operating conditions with specified superheat.
Horizontal Flow Direction and Connection Selection
The product is available in horizontal R-L and L-R flow direction versions, with optional DN15 to DN25 flanged connections or 1/2 inch to 1 inch BSP/NPT threaded connections. Flange standards include EN 1092 PN16, ASME 150, and JIS/KS 10.
Installation & maintenance notes
Install Horizontally According to the Corresponding Flow Direction
FTGS14 must be installed with a horizontal connection. Before installation, verify that the on-site medium flow direction matches the R-L or L-R version of the valve.
Verify the Maximum Allowable Differential Pressure for the Model
Confirm that the actual differential pressure across the valve does not exceed the maximum differential pressure of the installed FTGS14 model: 4.5 bar for FTGS14-4.5, 10 bar for FTGS14-10, and 14 bar for FTGS14-14.
Confirm That Actual Pressure and Temperature Are Within the Permissible Operating Range
Before installation and commissioning, confirm that the actual system operating pressure and temperature do not exceed the permissible product limits. The maximum operating pressure for saturated steam is 14.6 bar g, and the maximum operating temperature is 250°C @ 13.8 bar g.
FAQ
How does the FTGS14 work?
The FTGS14 uses a float-operated valve design to control discharge according to the float position. Its built-in air vent provides in-line air removal, making it suitable for continuous condensate discharge and moisture control in superheated steam systems.
What are the key selection considerations for this steam trap?
Flanged connection sizes are DN15, DN20, and DN25, compliant with EN 1092 PN16, ASME 150, and JIS/KS 10. Threaded connection sizes are 1/2", 3/4", and 1", with BSP or NPT threaded connections available. The maximum differential pressure ΔP depends on the model and must be confirmed against the system pressure and temperature conditions.
What are the material and corrosion resistance characteristics of this product?
The valve body is made of austenitic stainless steel, the valve cover is made of nickel-plated ductile cast iron, and the internal components include stainless steel materials. The product provides high overall corrosion resistance and supports in-line maintenance.
Are optional features available to improve system protection?
Yes. The FTGS14-C model, identified by the letter C in the model designation, supports a steam lock-breaking device (SLR) to prevent steam locking. Some models are available with a built-in strainer, FTGS14X. Confirm the specific configuration by model.
What should be noted during installation and maintenance?
Installation must follow the arrow direction on the valve body. The float arm must remain horizontal and move freely up and down. To change the flow direction, the valve cover can be rotated 180 degrees while ensuring that the air vent operates correctly. The installation and maintenance guide supplied with the product should be used as the basis for specific procedures.
How should the capsule type and applicable temperature/pressure range be selected for this model?
The capsule is BP99/32 and is suitable for superheated steam. It supports superheat of up to 150°C@0 barg and 50°C@32 barg. The specific configuration must be confirmed according to the actual operating conditions.
What is the difference between FTGS14-C and FTGS14-X?
FTGS14-C is equipped with a steam lock-breaking device to prevent steam locking. FTGS14-X provides a built-in strainer and should be selected according to requirements.