Hattersley Fig 866 PN25 Wafer Check Valve

Features & Benefits

• Offers precise and accurate flow regulation for optimal performance. • User-friendly handwheel operation accompanied by a numerical indicator for straightforward adjustments. • Integrated orifice and test points eliminate the need for a separate Differential Regulation Valve (DRV) and metering station. • WRAS Approved for use with drinking water up to 85°C. • Ensures positive flow control across all handwheel settings. • The FODRV guarantees an accuracy of ± 5% on all settings, providing reliable flow regulation and measurement.

Specification

• Complies with BS7350: 1990 standards. • Operated via handwheel for ease of use. • Features a numerical indicator for clear visibility. • Inside screw non-rising handwheel design. • Incorporates a characterising regulating disc for effective flow management. • Includes an integral fixed orifice for enhanced reliability. • Supplied with two Figure 631 test points for convenient monitoring. • Flow charts available to assist in system design. • End connections are threaded for compatibility. • Available in sizes 1 to 2" taper threaded as per BS EN 10266 (ISO 7-1), previously BS 21. • Sizes 1/2" and 3/4" comply with ISO 228 parallel standards. • Also available in sizes DN15 and DN20 when combined with compression adaptors suitable for copper pipes in accordance with BS EN 1057 R250 (half hard). • Regarded as a WRAS Approved Product.

Pressure/Temperature Rating

• Please refer to the datasheet for detailed specifications.

Refrigeration check valves are essential non-return valves utilised in refrigeration and HVAC systems to regulate the flow direction of refrigerant and prevent backflow, which can potentially damage compressors or impair system efficiency.

Specifications

Sizes: Ranging from 1/4" to 14" (varies by type)
Connections: Available in Flanged, Screwed, Butt Weld, and Solder types
Materials: Constructed from Steel or Stainless Steel
Medium: Suitable for glycol-based cold brine refrigerants as per EN 378 p. 1, including NH3, R134a, R290 (propane), R507, and blends with refrigerant oil, accommodating neutral, gas, and liquid media
Pressure Rating: PS 25, PS 40, PS 63
Temperature Range: From -20 to +150 degrees Celsius Max
Design: Notes:

Enhance the reliability and efficiency of your refrigeration system today with our high-quality refrigeration check valves. Perfect for a variety of applications, these valves are designed to ensure optimal performance and longevity.

**Valpres 600 Series Butterfly Valve with Valbia 82 Series Pneumatic Actuator** Introducing the Valpres 600 series butterfly valve, engineered for reliability and performance. This valve features a robust iron body complemented by a stainless steel disc and stem, all lined with durable EPDM rubber. Paired with the Valbia 82 series pneumatic actuator, it is designed for optimal functionality with a minimum pilot air supply pressure of 5.5 Bar g. The actuator boasts a rack and pinion design, encapsulated in a hard anodised aluminium body with blue-coated end caps for added protection. It offers visual position indication and includes 1/8” BSP pneumatic connections. Engineered with bi-directional open/close travel stops, this system is suitable for a maximum air supply pressure of 8 Bar g and is ATEX II 2GD T6 approved for use in hazardous environments. The package includes a mounting kit to ensure swift installation. Each unit is fully assembled and rigorously function tested for quality assurance. **Specifications:** - **Size Range:** Available in sizes from 1.¼” to 24” - **Body Types:** Wafer pattern compatible with various flange drillings, and wafer lugged pattern suited for PN16 flanges - **Body Materials:** - Wafer Pattern: Cast Iron - Wafer Lugged Pattern: Ductile Iron - **Trim Material Options:** Choose between SG iron disc with NBR or Viton liners - **Actuator Options:** Select from double acting, spring return (available in fail close or fail open configurations). Stainless steel and painted actuator options are also offered. Optimise your piping systems with the Valpres 600 series butterfly valve and Valbia actuator, combining durability, performance, and safety for industrial applications.