Mô tả
These pressure actuated modulating valves control the quantity of water to a condenser by directly sensing pressure changes in a refrigerant circuit. The valves can be used in non-corrosive refrigerant systems. Ammonia power elements and valves designed for saltwater applications are available. The valves have a quick opening characteristic and open on pressure increase (direct acting). Reverse acting (close on pressure increase) is possible.
Feature and Benefits
- Pressure balanced valve design - Setpoint is independent from water inlet pressure
- High refrigerant pressure resistant bellows - Refrigeration pressure may increase up to 28 bar without bellow damage
- Pressure actuated - Direct and fast response to pressure variations
- 3/8, 1/2, 3/4'' are angled body type valves with high Kv value - Small dimensions with high flow capacity
- 3/8'' up to 2'' pressure valves ''all range'' types - Reduces stock. One valve for all non-corrosive refrigerants
- Quick opening valve characteristics - Fast response to pressure increase
- No close fitting or sliding parts in water passages - No hysteresis increase or stuck valve caused by contamination
- Easy to disassemble. All parts can be replaced - Valve can easily be repaired ''in line''. Valve piece parts are available ''world-wide''
- Special bronze bodies and monel parts - Used for sea water applications
- Power elements with stainless steel bellows available - For use on ammonia filled equipment
- Wide range of pressure connection styles - Possibility to meet the legislation in your country
- Nickel plated seats available for 3/8, 1/2, and 3/4'' valves - High resistant against erosion/ corrosion and cavitation
- Direct/reverse action - Control action can be (factory) changed
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