Product Overview

The Spirax Sarco BTS7 is a sealed thermostatic steam trap designed to remove condensate from clean (chemical free) steam systems with minimal condensate retention. Manufactured in 316L stainless steel with minimal crevices, it is self-draining and operates close to steam temperature.

Each trap is individually packaged within an "ISO CLASS 7" clean environment with protective end caps and sealed in a protective plastic bag, making it ideal for hygienic applications in the pharmaceutical, food, and biotechnology industries.

Product Features

• Sealed thermostatic design for clean steam applications
• 316L stainless steel construction with minimal crevices
• Self-draining operation when installed vertically
• Operates close to steam temperature for efficient condensate removal
• ISO CLASS 7 clean room packaging
• Complies with FDA requirements for food contact materials
• Designed and manufactured in accordance with ASME BPE standards

Sizes and Pipe Connections

Tube Ended Variants

Standard	Type	Sizes
Imperial O/D	16swg wall	½", ¾", 1"
DIN 11850 Series 1	Tube End	DN10, DN15
ISO 1127 Series 1	Tube End	DN8, DN10, DN15

Note: DN8 is only available for ISO 1127 tube ends.

Screwed Ended Variants

Standard	Sizes
BSP	¼", ½", ¾", 1"
NPT	¼", ½", ¾", 1"

Pressure/Temperature Limits

Parameter	Value
PMA Maximum Allowable Pressure	7 bar g @ 170°C
TMA Maximum Allowable Temperature	170°C @ 7 bar g
Minimum Allowable Temperature	-254°C
PMO Maximum Operating Pressure (Saturated Steam)	7 bar g @ 170°C
TMO Maximum Operating Temperature	170°C @ 7 bar g
Minimum Operating Temperature	0°C
Design Maximum Cold Hydrostatic Test Pressure	10.5 bar g

Note

This product should not be used in certain pressure/temperature combination regions as damage to the internals may occur. Please refer to the pressure-temperature curve for details.

Materials

No.	Part	Material
1	Body	Stainless Steel 316L (1.4404)
2	Capsule Element	Stainless Steel 316L (1.4404)

Capacities

The capacity chart shows the condensate removal capacity in kg/h based on differential pressure in bar. The BTS7 provides both hot water and cold water capacity ratings.

Dimensions and Weights

Dimensions / Weights (Approximate) - Units: mm and kg

Size	A	B (Butt Weld)	C	D (Threaded)	Weight (Butt Weld)	Weight (Threaded)
¼"	40	-	-	58	-	0.53
½"	40	106	40	74	0.44	0.49
¾"	40	106	40	81	0.51	0.60
1"	40	106	40	95	0.60	0.73
DN8*	40	106	40	-	0.35	-
DN10	40	106	40	-	0.35	-
DN15	40	106	40	-	0.42	-

Note: DN8 is only available for ISO 1127 tube ends.

Installation and Maintenance

For full details, please refer to the Installation and Maintenance Instructions (IM-P180-05) supplied with the product.

Installation Note

The trap is designed for installation in vertical lines with the flow downward to ensure self-draining operation. Do not expose the element to superheat conditions since over-expansion may result.

Suitable isolation valves must be installed to allow for safe maintenance/replacement.

Options

• Fixed bleed: Ensures 'Fail Open' operation for added safety
• Special connections: Available to suit most piping systems

Certifications

This product is available with the following certification:

• Certificate of Compliance for FDA and ADI Free Statement (F.O.C.)
• TSE-BSE Statement (F.O.C.)
• Declaration of Conformity BS EN ISO 14644-1:2015 Class 7 Clean Room (F.O.C.)
• Typical Test Report (F.O.C.)

Note: All certification/inspection requirements must be stated at the time of order placement, and may be subject to additional cost as detailed above.

Spare Parts

There are no spare parts available for the BTS7. The unit is designed as a sealed, non-maintainable trap.

How to Order

Example: 1 off Spirax Sarco non-maintainable DN15 BTS7 clean steam trap with tube ends to ISO 1127, Series 1 (21.3 mm O/D x 1.6 mm wall thickness). Tangent length of tube ends to be 40 mm for ease of orbital welding. Body to be self-draining. Suitable for pressures up to 7 bar g.

When ordering, please specify:

1. Model (BTS7)
2. Size and connection type
3. Optional fixed bleed feature if required
4. Any certification requirements