Product Overview

The Spirax Sarco BTS7.1 is a sealed sanitary balanced pressure thermostatic steam trap designed to remove condensate from clean (Chemical Free) and pure steam applications with minimal condensate retention. Applications include sterile steam barriers, block and bleed installations, mains drainage and CIP/SIP of vessels and reactors and process lines.

Manufactured in 316L stainless steel with minimal crevices, it is self-draining and operates close to steam temperature. The BTS7.1 has an internal finish of 0.5 μm Ra (20 μin Ra) whilst the external finish is 0.75 μm Ra (30 μin Ra). Each trap is individually packaged within an "ISO CLASS 7" clean environment with protective end caps and sealed in a protective plastic bag.

Product Features

• 316L stainless steel construction for corrosion resistance
• Internal finish 0.5 μm Ra, external finish 0.75 μm Ra
• Self-draining design for vertical installation
• Operates close to steam temperature for efficient drainage
• Sanitary clamp connections for easy installation
• Complies with ASME BPE standards
• EC1935:2004 Food Contact Materials compliant

Sizes and Pipe Connections

Size	Inlet x Outlet	Connection Type
BTS7.1	¾" x ½"	ASME BPE Type A Sanitary Clamp

The BTS7.1 trap is designed to be self draining for vertical installation (discharge down). The ½" - ¾" trap should be fitted with a ¾" gasket at the inlet.

Pressure/Temperature Limits

Parameter	Value
Body Design Pressure	PN7
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
Cold Hydraulic Test Pressure	10.7 bar g

Operating Limits

The product should not be used in the shaded region as damage to the internals may occur.

Materials

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

Capacities

The chart shows condensate capacity in kg/h at various differential pressures. Cold water capacity is approximately 10 times higher than hot water capacity at the same differential pressure.

Dimensions and Weights

Size	A (mm)	B (mm)	Weight (kg)
¾" x ½"	40	49	0.15

Standards and Certifications

• Designed and manufactured in accordance with ASME BPE standards
• Complies with EU Pressure Equipment Directive 97/23/EC
• EC1935:2004 Food Contact Materials compliant
• Complies with EC2023:2006 on good manufacturing practice for materials and articles intended to come into contact with food
• EN 10204 3.1 Material Certification available for pressure retaining parts (chargeable)
• Declaration of Conformity to BS EN ISO 14644-1:2015 Class 7 Clean Room (F.O.C.)

Installation and Maintenance

For full details see 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 port: Ensures 'Fail Open' operation for added safety

Spare Parts

There are no spare parts for the BTS7.1. The unit is designed as a non-maintainable, sealed sanitary steam trap.

How to Order Example

1 off Spirax Sarco non-maintainable 1/2" - ¾" BTS7.1 clean steam trap suitable for pressures up to 7 bar g with a body that is self-draining.