Piston check valves

Douglas Chero

Douglas Chero was established in 1974 to meet the demand for high quality forged valves in the petroleum refining and production plants, offshore oil and gas fields, power industry, fertilizer, chemical and desalination plants all over the world.

Gate, globe & check valves (API 602, BS 5352)

Size range : ¼” – 3”
Rating : # 150 – 4500
End connection : SW (socket weld), THR (threaded), BW (butt weld), FL (flanged, RF, RTJ), Valv-O-let, integral reinforced, beveled for welding
Body style : compact, straight, extended body, y pattern, lift check, piston check, swing check
Bonnet / Cover style : welded, bolted, bellow sealed, cryogenic, lsrs, lantern ring
Valve style : solid wedge gate, straight pattern globe, y pattern globe, piston check, swing check
Material : A105, LF2, F 304, F316 and most others

Urea service valves

Size range : ½” – 8”
Rating : #2500, PN325, PN455
End connection : FL (flanged), THR (threaded, flanges can be screwed on)
Body style : globe (straight Y & angle), check (piston & in line)
Material : F316L modified, specially designed for urea applications
Testing : Huey test, ASTM A262 C / ISO 3651/I, ASTM 262 E / ISO 3651/II

Forged gate, globe, check valves, Pressure sealed (PS) bonnet or cover. (founded on API 600, BS 1873, B16.34)

Size range : ½” – 12”
Rating : #900 – 4500
End connection : SW (socket weld), BW (butt weld)
Body style : compact, straight, y pattern
Valve style : solid wedge gate, flexible wedge gate, globe, swing check)
Material : A105, LF2, F 304, F316 and most others

Forged through conduit gate valves (API 6A), slab & expanding gate

Size rage : 2 1/16, 2 9/16, 3 1/8 & 4 1/6
Rating : 3000 & 5000 (10000) psi
End connection : FL (flanged) RTJ

Tom Wheatley

WKM has been one of Cameron’s strongest brands since its Flow Control Division acquired it in 1987. The name is trusted among engineers in the industry field because of its stellar track record that has remained constant for more than a century. Their line of ball, butterfly and gate valves have repeatedly delivered positive results in many oil and gas and process controls applications, no matter where they are installed. One of the things that make WKM great is that even though their line is in no ways the cheapest, over the course of time their easy to repair design and replaceable parts make their operating costs lower than many other traditional valves that are less expensive at the initial time of purchase.

Triple-offset valve (TOV)

Field replaceable metal seat
Fire safe API 607
Fugitive emission API 641 & ISO 15848-1
Size : 3 – 60”
Rating : #150 – 600
Material : CS & SS, other on request
Pattern : Lug, Short & Long (ISO 5752/API 609)
End connection : RF, (BW on request)

Available with short delivery time

High performance double offset Dynacentric butterfly valve

Size : 2 ½” – 36”
Rating : #150 – 600
End connection : wafer, lug
Body material : WCC, LCC, CF8M
Temp range : -46 / 538°C

M-HT API 6A gate valve with Pow-R-seal double expanding gate

Size : 2 1/16 – 4 1/16
Rating : 2000 – 5000 psi
Material : ?
End connection : RF, RTJ, THR

Saf-T-seal through conduit slab gate valve

Pressure activated seat sealing
Inline replaceable seats
API 6D, API 6FA
Primary soft sealing, secondary metal sealing

Series : M, C6, C2B, C2C, C6B
Size : 2” – 36”
Rating : #150 – #1500
End connection : RF, RTJ, BW
Body material : WCC, LCC

Saf-T-Gard actuators

MA 12, MA 16, MA 20 series single diaphragm actuators for 2”- 6” valves
MA1212, MA2012, MA2016, MA2020 series double or tandem diaphragm actuators for 2”- 8” valves
MP 13 series piston actuator for 2”- 4” valves

Of course other pneumatic, electric or gas / fluid operated actuators can be mounted as well.

Pow-R-Seal through conduit double expanding gate valve

Mechanical activated seat sealing
Inline replaceable seats
API 6D, API 6FA
Metal sealing
Thermal body cavity relief

Series : M, E1C
Size : 2” – 24”
Raing : #300 – 900
End connection : RF, RTJ, BW
Body material : WCC, WC6, LCC

Both the slab and expanding gate valve have the unique SLS (single spring loaded) lip seal stem seal system that allows emergency injectable plastic packing.

Floating ball valves (C50, 210A, 210L, 310C5, 310F)

Series: 210, 310
Construction: 2 pc. 2 & 3 pc.
Size: 1-4” ¼-4”
Rating: 750 – 2000 psi 3000, 5000 psi
Connection: THR, grooved THR, SW, RF
Bore: RB, FB RB, FB
Body material: DI CS, SS
Fire safe: API 607 API 607

320F flanged 2-piece floating ball valve

The WKM 320 Series API 608 floating ball valve features a patent-pending seat that enables internal cavity relief while maintaining bidirectional sealing capability.
In every trim, WKM 320 Series valves include NACE compliance, fugitive-emissions capabilities, and fire-test certification to API Spec 607 7th Ed.

Size ½”- 8”
Rating #150 – 600
Bore RB, FB
Body material WCC, LCC, CF8M, WCC + ZPEX coating
Seat material Delrin, PTFE, PEEK
End connection RF, RTJ

370 Dynaseal trunnion mounted ball valves

Series: 370D4, 370D5, 370D6
Design: 2pc API6D, 3pc API6D, 2 pc API608, 6D
Size: 2-16, 18,20,24, 2-16
Rating: 150, 150-600, 150-2500
Bore: RB-FB, FB, RB-FB
Connection: RF, RTJ RF, RTJ RF, RTJ
Body mat: WCC, LCC, CF8M, A105, WCC, LCC, CF8M
Fire safe: API 607. 6FA, API 6FA, API 607