The product
GP-1000 Series valves are pilot-controlled for accurate regulation of pressure under widely ranging flow. The internal-pilot design eliminates external components and piping.
Internally piloted GP Series valves are capable of larger capacity and greater accuracy than direct-acting valves. Internally piloted GP Series valves are rated for dead-end service and have a 20:1 turn down ratio and an accuracy of +/-5% of set point.
Completely supported by piping, lightweight GP Series valves install easily with NPT or flanged connections. A stainless steel diaphragm, hardened stainless steel working parts and integral removable strainer team up to provide higher performance over a long, trouble-free service life.
Valves are equipped with a caged main valve assembly (separate shutoff surfaces and flow-control ports), piston valve rings for longer life, and an external adjusting screw with locking nut and cover. All working parts are renewable in-line. For air service, a Teflon®; seat ensures tight shutoff.
Product Specifications
| Model | GP-1000 | GP-1000A | GP-1000SS | GP-1000AS |
| Fluid | Steam | Air, Non-Corrosive Gases | Steam | Steam |
| Connection Type | NPT, Flanged ANSI 150 | NPT, Flanged ANSI 150 | NPT | NPT |
| Maximum Allowable Pressure | 250 psig (17 bar) | 150 psig (10 bar) | 150 psig (10 bar) | 150 psig (10 bar) |
| Maximum Allowable Temperature | 450°F (232°C) | 175°F (80°C) | 450°F (232°C) | 450°F (232°C) |
| Body Material | Ductile Iron ASTM A536 | Ductile Iron ASTM A536 | Stainless Steel AISI 304 | Stainless Steel AISI 304 |
| Maximum Operating Pressure | 250 psig (17 bar) | 150 psig (10 bar) | 150 psig (10 bar) | 150 psig (10 bar) |
| Connection Size | NPT 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm) 1-1/4″ (32 mm) 1-1/2″ (40 mm) 2″ (50 mm) Flanged 2″ (50 mm) 2-1/2″ (65 mm) 3″ (80 mm) 4″ (100 mm) | NPT 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm) 1-1/4″ (32 mm) 1-1/2″ (40 mm) 2″ (50 mm) Flanged 2″ (50 mm) 2-1/2″ (65 mm) 3″ (80 mm) 4″ (100 mm) | 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm) 1-1/4″ (32 mm) 1-1/2″ (40 mm) 2″ (50 mm) | 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm) 1-1/4″ (32 mm) 1-1/2″ (40 mm) 2″ (50 mm) |
