3 Port Manifold with Back Check Valve -- 99856
from Qosina Corp.

3 Port Manifold with Back Check Valve [See More]

  • Material Of Construction: ABS, COPE, PE; Polyethylene
  • Media: Air; Water
64001 [Check Valve from Associated Plastics, Inc.]
from U.S. Plastic Corporation

Prevents back-flow in flexible tubing. Operates in any postition, but works best at 10" to 28" hg vacumm. Made of polyethylene. #64001 has polyethylene disk; #64004 has neoprene disk. Max pressure is 20 psi. [See More]

  • Material Of Construction: Polyethylene
  • Valve Size: 0.38
  • Valve Type: BallDisk
  • Connection Description: Compression; Tubing Taper 3/8" to 1/4"
Bel-Art LDPE Check Valve, 5/16" to 1/4" hose barb -- EW-06308-10
from Cole-Parmer Instrument Company

Ideal for low-pressure applications. Choose from economical LDPE with neoprene disc; autoclavable PP with neoprene disc; or autoclavable PP with Hastelloy C ® springs, O-rings made of Viton ®, and built-in 149- µm screen â €"available in check valves or foot valves. [See More]

  • Material Of Construction: Polyethylene
  • Media Temperature: ? to 75
  • Maximum Pressure: 10.00
Thermo Scientific Nalgene Vacuum Check Valve and Positive Connector; HDPE -- hc-15-339-2
from Fisher Scientific

One-way high-density polyethylene valve for vacuum lines. Vacuum Check Valve and positive connector. Valve; Vacuum Check; Thermo Scientific; Nalgene; One-way; HDPE; Serrated; 0.75 in. long; Taper from 0.31 to 0.25 in.; Silicone rubber flap; Easy disassembly [See More]

  • Material Of Construction: Polyethylene
Check Valve with Tapered Barb
from Industrial Specialties Mfg., Inc.

For positive checking of gases/liquids, free floating PE or neoprene discs [See More]

  • Material Of Construction: Neoprene; Polyethylene (optional feature)
  • Connection Description: TubeFitting
  • Valve Size: 0.25 to 0.56
  • Maximum Pressure: 20.00