Groth 8860 - Manual (Page 3)

IOM -8860
Page 3 of 13
13650 N. Promenade Blvd. * Stafford, TX 77477
Office: (281) – 295-6800 * (800) – 354-7684 * Fax: (281) – 295-6999 * www.grothcorp.com
I. INTRODUCTION
The Groth Model 8860 Back Pressure Regulator controls upstream pressure in a process line such as
an anaerobic digester gas control system. The pressure setting is obtained by adjustable spring
compression and opening is caused by upstream pressure acting on a large diaphragm. A visible scale
indicates approximate set pressure. Springs are available for various standard and special set
pressure ranges.
The regulator must be maintained by a knowledgeable valve technician. It should only be assembled
under clean conditions, preferably in a shop environment. Carefully read and understand this manual
before attempting to adjust set pressure or flow capacity, or repair the regulator.
For information not contained in this manual, please contact:
Groth Corporation
13650 N. Promenade Blvd.
Stafford, TX, 77477 USA
Phone: 281-295-6800
Fax: 281-295-6999
www.grothcorp.com