WR60 / WR80 Series - Over-Pressure Relief - Single Seat Valves

Materials:

Product Wetted: ASTM 316L (UNS-S31603); (DIN-1.4404)

Non-Product: ASTM 304 (UNS-S30400); (DIN-1.4301)

Seat Material: Tef-FlowTM P (Std.) and metal (Optional) for strength and durability

Elastomers: FKM or EPDM

Finish: < 32Ra (<0.8 µm) Other finishes available upon request

Sizes: Available in three actuator diameters, 4” (102mm), 5” (127mm) and 6” (152mm) with heavy springs for these series and sizes:

• WR61 air-to-raise valves (AR) 1.5” (38mm) – 4” (102mm)
• WR63 air-to-lower (AL) 2” (51mm) -4” (102mm)

Seat Options:

• Tef-Flow™ P
• Metal

Port Options:

W = Weld
S = S-Line
I = I-Line (female - 15I)
14I = I-Line (male - 14I)
B = Bevel Seat (male threaded end)
F = Flange
Q = Q-Line
D = DIN 11851 405 Thread
A = Aseptic I-Line (15NI)
For mixed connection types, specify in order of port #.

Adapter Options:

Standard W60 Adapter: The ‘standard’ adaptor is used on all models of short and long stroke W60 Series valves. Machined from SS 316L bar with a thick cross-section, the adaptor adds strength to the valve body and provides alignment for the stem. The outer perimeter seals to the valve body with an o-ring that is located forward to the product zone to minimize crevices. The product stem passes through the adaptor and is sealed to the adaptor with an o-ring. A Teflon® bearing guides the stem and takes up the mechanical loading imparted by hydraulic forces. This increases the service life of the stem seal. Adaptors are made in 1"-6" (25mm -152mm) sizes.

W60 High Pressure Adapter: The pressure limitation of the W60 adaptor is the sealing capability of the dynamic o-ring on the product stem. This variation of the W60 adaptor uses a backing ring added on the atmospheric side to support the stem o-ring. This significantly boosts the pressure rating on the stem o-ring. The product stem passes through the adaptor and is sealed to the adaptor with an o-ring and is guided by a Teflon® bearing.

W80 Adapter: This adaptor is used to convert a ‘standard’ W60 series valve to a W80. The outer perimeter seals to the valve body with an o-ring that is located forward to the product zone to minimize crevices. The product stem passes through the adaptor and is sealed in the upper part and the lower part of the adaptor with o-rings. The space between the o-rings is flushed with a suitable liquid or steam. The Teflon® bearing is located in the flushed chamber. Adaptors are made in 1"-6" (25mm - 152mm) sizes. For vacuum-rated, extended shelf-life (ESL) applications, the W80A adaptor adds steam trace to the adapter-to-valve body connection.

Wiping Stem Seal Adapter: For high-risk and hard to clean product applications, the wiping stem seal fills the gap between the product zone and the traditional o-ring stem seal. The adaptor is a two-piece design to allow easy inspection or replacement of the wiping stem seal. The outer perimeter seals to the valve body with an o-ring that is located forward to the product zone to minimize crevices. A Teflon® bearing is used to guide and support the valve stem.