Heavy duty American-made shut-off gun with rear load design.  An ergonomic handle and trigger design that allow the user to operate the gun in an easy manner.  With the unique orientation of the discharge chamber, the gun allows the user to work for long periods of time.  The safety lock prevents accidental opening of the valve.  Designed with a stainless steel control bolt, stainless steel cam, stainless steel weep seat (meant for winter use) and stainless steel ball, the gun features machined brass inlet fitting, and hollow shaft tube (for direct connection to a lance tube).  With a 4:1 burst ratio and six month warranty, this shut-off gun features the most durable design (in its class) in its industry

WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Giant Industries Limited Warranty
  • 21265A Literature


U.S. Metric
Flow 10 GPM 38 L/min
Pressure (Maximum) 5000 PSI 350 bar
Maximum Temperature 300 ºF 150 ºC
Inlet 3/8″ FNPT
Outlet 1/4″ FNPT
Weight 1.8 lbs 0.82 kg
Special Features Weep


Repair Kit – Part #21240
8 21210 O-Ring 1
10 21209 Control Bolt 1
15 21431 Valve Spring 1
16 21205 Valve Ball 1
17 21237 Valve Seat 1
18 21217 O-Ring 2
21 21251 Spring 1

Repair Kits Available

The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.

Service & Repair

Giant provides service on each pump and accessory that we sell. Many basic repair procedures are covered in the Giant repair manual. For all other questions on service or repair needs please contact your local Giant distributor.