Water Pumps & Boosters | Sump & Sewage Systems MD, VA, DC
STH, Inc. provides reliable pumping systems, engineering support, product selection, and service for municipal, commercial, and industrial applications.
Fire Pumps MD, VA, DC, WV, DE | STH Inc.
STH can provide detailed fire pump and packaged fire pump systems specifications, application engineering, project budgets and training to owners and engineers for your specific fire pump …
Products
P: (301) 682-3390 T: (800) 233-7718 F: (301) 682-3391 ©2025 STH Inc. All rights reserved. Explore our line card to see the industry-leading manufacturers we represent.
View the STH Team and Their Contact Information
Information about the staff of STH Inc.
About Shafer, Troxell & Howe Inc.
STH specializes in the Application, Sale and Service of pre-engineered and packaged Fire Pumps, Water Booster Systems, Sump & Sewage Systems, On-Site Waste Water Systems, Rainwater …
Controllers & Variable Frequency Drives MD, VA, DC, WV, DE
STH provides controllers & variable frequency drives for its customers in MD, VA, DC, WV, & DE.
Municipal Design Engineering
STH provides engineering support for commercial and municipal projects, offering detailed specifications, drawings, design guides, and training for pre-engineered pumping and controller …
Fire Pump Start-Up Form - sthinc.com
All on and off set points for the fire and jockey pumps will be presented to STH or STH will set the points per NFPA. Batteries to be filled with acid and charged 24 hours prior to STH arrival.
Calculate Gallons Per Minute | STH Inc.
Sump/Sewage/Grinder GPM Calculation Worksheet Use the tables below to calculate GPM required. Use Table 3.5 (Step #1) to determine number of fixture units Then use Table 3.6 (Step #2) to convert …
Calculate Total Dynamic Head | STH Inc.
To calculate the Total Dynamic Head in feet, use our handy free-to-use tools.