Refrigerating Specialties Division

Parker shows HERL family of small safety relief valves (T21.1) at Chillventa 2012

NUREMBERG, GERMANY, 9 October 2012 - Parker Hannifin Corporation, the global leader in motion
and control technologies, presented the new HERL Refrigerating Specialties Small Safety Relief Valves
at Chillventa 2012. The T21.1 series of valves can be used in both industrial refrigeration and chemical
The new PTFE-Compound disc sealing is suitable for a larger range of refrigerants and mediums. The
temperature range is -50°C to +120°C and the pressure range is 3,5 barg to 40 barg.
T21.1 is a standard safety valve for refrigerant according to EN-378-1 (annex E). The design belongs to
DIN EN 12284, EN 13136, EN ISO 4126. It has a type test approval according to Pressure Equipment
Directive 97/EC from TÜV Rheinland. ATEX certified for explosion-proof areas are also available.
The T21.1 is available in different connections:
- Flanges acc. to EN1092 PN 25/40 with groove
- Flanges acc. to ANSI 16,5 class 150, 300 RF
- G1/2” inlet, G1” outlet
- Thread male 1/2” MPT inlet, 1” MPT outlet
Visit the Parker stand (Hall 4, Stand 118) to learn more.
With annual sales exceeding $13 billion in fiscal year 2012, Parker Hannifin is the world’s leading
diversified manufacturer of motion and control technologies and systems, providing precisionengineered
solutions for a wide variety of mobile, industrial and aerospace markets. The company
employs approximately 60,000 people in 48 countries around the world. Parker has increased its annual
dividends paid to shareholders for 56 consecutive fiscal years, among the top five longest-running
dividend-increase records in the S&P 500 index. For more information, visit the company’s website at or its investor information website at