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  • Throttlemaster
  • Circle Seal 900 series
  • Circle Seal 9200 series
  • Circle Seal 9500 series
  • Circle Seal MV60 series
  • Gemu 667 series

Product description

The Marquest Throttlemaster plastic needle valves offer precise flow control and bubble tight shutoff for corrosive and ultra pure media applications. The valves have an integral panel mounting design and are available in either angle or globe patterns.

Operating Pressure:

  • 0 to 13.8 bar

Operating Temperature:

  • -18 to 120 deg C

Body Materials:

  • PVC, CPVC, PP & PVDF

Connections:

  • 1/4” , 3/8” AND 1/2" FNPT

Call us on 01895 200015 for price and delivery or to discuss your application.


(PDF) Download datasheet

Product description

This zero leakage manual shutoff valve is available with handwheel or toggle actuation. It features a protected o-ring and when fully open the stem is withdrawn permitting full flow with minimum pressure drop.

Operating Pressure:

  • 0 to 6000 psig (0.5 to 414 bar) - PED approved version available

Connection Size:

  • ¼”npt

Body Materials:

  • 303 St St

O-ring Materials:

  • Viton, Neoprene, Buna N standard

Call us on 01895 200015 for price & delivery or to discuss special sizes, materials and threads.


(PDF) Download datasheet

Product description

This plug shutoff valve is zero leakage in both vacuum or pressure applications. Pressure drop is kept to a minimum due to the straight through flow passage and the ball handle acts as a positive valve position indicator.

Operating Pressure:

  • Vacuum to 150 psig (Vacuum to 10 bar) - SEP version available

Connection Size:

  • 1/8” & 1/4” npt

Body Materials:

  • Brass

O-ring Materials:

  • Viton, Neoprene, Buna N standard

Call us on 01895 200015 for price & delivery or to discuss special sizes, materials and threads.


(PDF) Download datasheet

Product description

This miniaturised plug shutoff valve is zero leakage in both vacuum or pressure applications. Pressure drop is kept to a minimum due to the straight through flow passage and the ball handle acts as a positive valve position indicator.

Operating Pressure:

  • Vacuum to 150 psig (Vacuum to 10 bar) - SEP version available

Connection Size:

  • 1/8” & 1/4” npt

Body Materials:

  • Brass or 303 St St

O-ring Materials:

  • Viton, Neoprene, Buna N standard

Call us on 01895 200015 for price & delivery or to discuss special sizes, materials and threads.


(PDF) Download datasheet

Product description

These high pressure shutoff and metering valves utilise an encapsulated Teflon seat and when shut off this seat ensures zero leakage from vacuum to 414 bar. When fully open the valve has high flow capacity but as it closes throttling, metering and ultrafine metering can be achieved before final shutoff.

Operating Pressure:

  • Vacuum to 6000 psig (Vacuum to 414 bar)

Connection Size:

  • 1/4” & 1/2” npt

Body Materials:

  • 303 St St

Seal Materials:

  • Teflon

Call us on 01895 200015 for price & delivery or to discuss special sizes, materials and threads.


(PDF) Download datasheet

Product description

The Gemu 667 is a pneumatically operated 2/2-way diaphragm valve which uses a low maintenance membrane actuator. All medium wetted parts and the housing are made of plastic. Sizes up to DN50 are self operating due to integral springs. Sizes of DN65 and above are opened by the pressure of the working media on the diaphragm. There are other models available in the product range.

Operating Pressure:

  • 0 to 10 bar

Operating Temperature:

  • -20 to 80 deg C

Body Materials:

  • PVC, ABS, PP, PP-H & PVDF

Connections:

  • DN15 to DN80

Call us on 01895 200015 for price and delivery or to discuss your application.


(PDF) Download datasheet

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